Stratigraphy of Lunar Craters

Don E. Wilhelms and Charles J. Byrne

January 23, 2009

Section	Title	Page
Introduction		2
Chapter 1	The Pre-Nectarian System	5
Chapter 2	The Nectarian System	14
Chapter 3	The Imbrian System, Lower Imbrian Series	30
Chapter 4	The Imbrian System, Upper Imbrian Series	33
Chapter 5	The Eratosthenian System	37
Chapter 6	The Copernican System	41
Chapter 7	Revised Strata Assignments	43
Appendix A	Lunar Craters Sorted by Name	A-1
Appendix B	Lunar Craters Sorted by LAC Chart	B-1

Introduction

In 1987 the U.S. Geological Survey (USGS) published what is still the most complete assessment of the ages of lunar craters, The Geologic History of the Moon (GHM; USGS Professional Paper 1348, by Don Wilhelms and two expert contributors of special sections, John F. McCauley and Newell J. Trask).  Relative ages of lunar geologic units are determined in ways that are simple in principle if often difficult in practice.  Decades of work have established that almost all lunar craters were created by impacts and started their existence looking pretty much alike: a deep bowl surrounded by a rough raised rim that in turn is surrounded by radial ejecta ridges and secondary-impact craters.  Where this pattern is complete, the crater is probably younger than adjacent units.  Where the pattern is interrupted by another crater's ejecta or a flood of mare material, the interrupting unit is the younger.  A very powerful stratigraphic technique derives from the observation that the largest lunar features, the ringed impact basins, also display consistent patterns in their extensive ejecta deposits and secondary-crater fields.  A crater superposed anywhere on these is obviously younger than the basin.  Where a crater is striated or roughened by a basin's ejecta or is pockmarked by its secondaries, that crater is older than the basin. This is an especially valuable dating tool over wide areas.  Ejecta and mare units have also been dated relative to one another by counts of superposed smaller craters.  In the absence of good stratigraphic control, ages of craters are estimated from their morphologies: with time they lose their originally sharp features and steep slopes.

Age relations established by these simple observations on Earth-based, Lunar Orbiter, and Apollo photographs have been mapped over the whole Moon and unified into a stratigraphic column, a classification of the succession of deposited layers.  The ejecta blankets and secondary-crater fields of the Nectaris, Imbrium, and Orientale basins supply the main reference horizons.  Six main subdivisions of this column are defined or redefined in GHM and provide the organizing framework for the present contribution. 

By a convention long established for Earth geology, "system" refers to all the physical deposits formed during a period of geologic time, and "series" to all those formed within the subdivisions of a period called an "epoch".  The specific systems and series defined for the Moon are:

The pre-Nectarian System includes all deposits that are older than the Nectaris Basin. 

The Nectarian System includes the Nectaris Basin and all other basins and craters up to but not including the Imbrium Basin.

The Lower Imbrian Series is bounded below and above by the Imbrium and Orientale basins, respectively, and also includes everything formed in between (the spelling Imbrium refers to the physical basin and Imbrian to age and stratigraphic position).

The Upper Imbrian Series includes deposits younger than Orientale but older than the mare basalts sampled by Apollo 12.

The Eratosthenian System includes those basalts and other mare- and crater materials up to a roughly estimated age of 1.1 aeons (billion years).

The Copernican System fills out the recent lunar geologic record.

The tables in the present document supplement and update GHM.  Ages of craters 30 km and larger in diameter are summarized in GHM on six two-part color plates, part A for the nearside and B for the farside.  Each of the six plates is devoted to one of the systems or series.  The main contribution of our document is to give the names and coordinates of the craters mapped on the plates, especially the many on the crowded pre-Nectarian and Nectarian plates that were mapped but could not be named for lack of space. For now, only the 60 km pre-Nectarians are listed in these tables because of doubts about the ages of smaller ones.  Following are the correspondences between the GHM plates and the chapters in our document:

GHM Plate	Chapter	System	Series	Age
6	1	Pre-Nectarian		>3.92 aeons
7	2	Nectarian		3.92-3.84 aeons
8	3	Imbrian	Lower Imbrian	3.84-3.8 aeons
9	4	Imbrian	Upper Imbrian	3.8-3.2 aeons
10	5	Eratosthenian		3.2-1.1 aeons
11	6	Copernican		<1.1 aeons

The absolute ages (an aeon is one billion years) are those accepted in GHM from calibrations of the relative stratigraphy with radiometric dates measured on samples returned from the Moon.

Each chapter contains two tables, one for the nearside craters and one for the farside. The "Comments"  in the last column of the tables correct some errors, state remaining uncertainties, present a few new findings, note name changes, and describe some important superposition relations between craters and basins.  The Nectarian tables, for example, contain many comments in the form  "Younger than basin X"  or  "Older than basin Y" .  These reflect the fact that the Nectarian System includes a number of basins that have been ranked stratigraphically (and potentially could subdivide the system).   "Partly covered by Imbrian ejecta" is a frequent comment as well.  These relations are portrayed on the GHM plates as follows:

Craters are mapped as circles, solid black if exposed.

If a crater is covered by a unit of ejecta or mare material belonging to the same system or series as the crater, its color is that of the overlying unit.

If not colored, the overlying unit belongs to a younger age category than the crater and is mapped in color on one of the higher-numbered plates.

Important examples are the large blank areas on both the pre-Nectarian and Nectarian plates (6 and 7, respectively), that correspond to the ejecta blankets of the Imbrium and Orientale basins; these are Lower Imbrian and thus mapped in color on Plate 8.  Nectarian basins mapped in color on Plate 7 add to the blank areas of the pre-Nectarian plate. 

Most positions and sizes given in our tables were originally compiled at the Lunar and Planetary Laboratory, University of Arizona, by Leif Andersson and Ewen Whitaker (NASA Catalogue of Lunar Nomenclature, NASA Reference Publication 1097, 1982).  Some comments in our tables reflect nomenclature used by NASA. Some of these names were changed or modified by subsequent actions of the International Astronomical Union (IAU).  The complete IAU list includes a very large number of names, some for craters as small  as 1 km in diameter. The  NASA  system includes lettered names of  satellitic  craters arrayed around a patronymic, an easily workable system initiated by Johann Mädler in the 19th century and developed and refined by Ewen Whitaker.  The Andersson-Whitaker positions and names have been recompiled in The Clementine Atlas of the Moon (by Ben Bussey and Paul Spudis, Cambridge University Press, 2004).  The USGS Web page (http://planetarynames.wr.usgs.gov/) also gives the positions and sizes for the named craters and the lettered ones of the catalog (a recent addition). This web site lists the lettered craters as "satellite features". It also identifies the people (mostly scientists) for whom the craters are named.  It includes the diverse diacritical marks that are important in many names but are absent from the Andersson-Whitaker and Clementine lists.  Our tables give both the current and superseded names where necessary, as clarified in the Comments column.  Some craters listed in the tables do not appear in the NASA, USGS, or Clementine lists but were found on one of the airbrushed charts published by various agencies that were used in the preparation of GHM; this is the meaning of the comment  "not in catalog".

The very useful Clementine atlas is conveniently organized. The Clementine images and airbrushed charts are displayed in 144 two-page sections, each based on one of the 1:1,000,000-scale charts originally planned early in the Space Age by the U.S. Air Force Aeronautical Chart and Information Center (ACIC) to cover the whole Moon.  One of the Clementine pages shows the Clementine orbital image of each Lunar Aeronautical Chart (LAC) area and the other a redrawing of the LAC, with feature names.  The Clementine gazetteer and our tables refer to the LAC on which each crater is depicted.  The LAC numbers for lettered names in the catalog and the Clementine atlas sometimes refer to the LAC on which their patronymic crater appears. These have often been changed in our tables to designate the LAC for the specific lettered crater.  In a few cases corrections have been made to the designated LAC number.

GHM and this contribution are progress reports.  Even now, fifty years after it was first imaged by spacecraft and after intense study by the United States and the Soviet Union, the Moon awaits good imaging over its whole surface; Mars has been better imaged.  Scientifically oriented books such as GHM contain good selections of Lunar Orbiter and Apollo photographs, but not full coverage.  Selected Lunar Orbiter photographs have recently been reprocessed and presented by Charles Byrne in two books: Lunar Orbiter Photographic Atlas of the Near Side of the Moon (Springer, 2005) and The Far Side of the Moon: A Photographic Guide (Springer, 2008).  Clementine imaging improved considerably over Lunar Orbiter at high latitudes but was degraded by high sun illumination at low latitudes.  We await better photos from the spacecraft of several countries that are now orbiting or soon to be launched.

In addition to the tables for each of the plates in the GHM, there is a table in Chapter 7 that lists craters whose stratagraphic assignment has been changed from that in the GHM because of new understanding, new images from Clementine, or reconsideration. Appendix A lists all of the craters documented in the main body in alphabetical order, with their coordinates, LAC charts, strata and comments; it serves as an index for the main body. Appendix B lists the craters sorted by their LAC chart numbers, so that all the craters centered in each LAC are grouped together with their strata and comments. This appendix is intended to aid in comparison of the topography of craters of different ages.

 Chapter 1. The Pre-Nectarian System

Table 1.1 Pre-Nectarian System, Nearside, Plate 6A
Feature	Latitude	Longitude	Diam. (km)	LAC	Comments
Abel	34.5 S	87.3 E	122	116
Abel M	32.2 S	83.6 E	81	116
Alexander	40.3 N	13.5 E	81	26
Amundsen A				144	Renamed Hêdervâri
Anaximander	66.9 N	51.3 W	67	2
Anaximander B	67.8 N	60.7 W	78	2
Anaximander D	65.4 N	50.1 W	92	2
Anaximenes	72.5 N	44.5 W	80	2
Arnold	66.8 N	35.9 E	94	4
Babbage	59.7 N	57.1 W	143	10
Babbage D	58.6 N	61.0 W	68	10
Baco	51.0 S	19.1 E	69	127	Probably Nectarian; should be shown on Plate 7A, not 6A
Baillaud	74.6 N	37.5 E	89	4
Balboa	19.1 N	83.2 W	69	37	Probably Nectarian; should be shown on Plate 7A, not 6A
Balboa B	20.3 N	82.3 W	62	37
Balmer	20.3 S	69.8 E	138	98	Name is on LAC 99
Barnard	29.5 S	85.6 E	105	99	Possibly Nectarian
Barrow	71.3 N	7.7 E	92	3	Possibly Nectarian
Birmingham	65.1 N	10.5 W	92	3
Boguslawsky	72.9 S	43.2 E	97	138
Boguslawsky B	73.9 S	61.0 E	63	139
Bohr	12.4 N	86.6 W	71	55
Bonpland	8.3 S	17.4 W	60	76
Boole	63.7 N	87.4 W	63	21
Boole H	61.6 N	88.9 W	75	21
Boussingault	70.2 S	54.6 E	142	138
Boussingault E	67.2 S	46.8 E	98	138
Brenner	39.0 S	39.3 E	97	114
Brianchon	75.0 N	86.2 W	134	9
Brisbane Z	52.8 S	72.4 E	64	129
Byrd	85.3 N	9.8 E	93	1
Casatus	72.8 S	29.5 W	108	137
Clairaut	47.7 S	13.9 E	75	113
Curtius D	64.8 S	8.1 E	61	137
Cuvier	50.3 S	9.9 E	75	126
Darwin	20.2 S	69.5 W	120	92
Davy Y	11.0 S	7.1 W	70	77
De La Rue	59.1 N	52.3 E	134	14
De Sitter L	78.8 N	34.5 E	69	4
Desargues	70.2 N	73.3 W	85	2
Deslandres	33.1 S	4.8 W	256	112	Name is on LAC 95
Drebbel E	38.1 S	51.3 W	65	110
Drygalski	79.3 S	84.9 W	149	143
Eddington	21.3 N	72.2 W	118	37
Einstein	16.3 N	88.7 W	198	37
Endymion J	53.5 N	50.7 E	67	14
Encke T	3.4 N	38.0 W	91	57	May not be a crater
Euclides P	4.5 S	27.6 W	66	76
Euctemon	76.4 N	31.3 E	62	4
Faraday	42.4 S	8.7 E	69	112
Fernelius	38.1 S	4.9 E	65	112
Flammarion	3.4 S	3.7 W	74	77
Flamsteed P	3.2 S	44.1 W	112	75	Possibly Nectarian
Fra Mauro	6.1 S	17.0 W	101	76
Fraunhofer J	42.4 S	63.6 E	63	115
Furnerius	36.0 S	60.6 E	135	115
Gärtner	59.1 N	34.6 E	115	13
Gauricus	33.8 S	12.6 W	79	112
Gemma Frisius	34.2 S	13.3 E	87	113
Gemma Frisius A	35.8 S	15.2 E	68	113
Gerard	44.5 N	80 W	90	22
Gilbert	3.2 S	76.0 E	112	81
Gill	63.9 S	75.9 E	66	129
Goldschmidt	73.2 N	3.8 W	113	3
Grimaldi	5.5 S	68.3 W	172	74
Gruemberger	66.9 S	10.0 W	93	137
Guericke	11.5 S	14.1 W	63	76
Hagecius	59.8 S	46.6 E	76	128
Hagecius A	58.2 S	47.2 E	61	128
Harlan	38.5 S	79.5 E	65	115
Hartwig	6.1 S	80.5 W	79	73
Hecataeus B	19.5 S	75.6 E	69	99
Hecataeus K	19.1 S	79.8 E	76	99
Hêdervâri	81.8 S	84.0 E	69	144	Formerly Amundsen A
Hedin	2.0 N	76.5 W	150	55
Hedin A	5.5 N	78.1 W	60	55
Heinsius	39.5 S	17.7 W	64	111
Helmholtz	68.1 S	64.1 E	94	139
Heraclitus	49.2 S	6.2 E	90	126
Hermite	86.0 N	89.9 W	104	1
Hipparchus	5.1 S	5.2 E	138	77
Hommel	54.7 S	33.8 E	126	127
J. Herschel	62.0 N	42.0 W	165	11
Jacobi	56.7 S	11.4 E	68	127
Janssen	13.5 N	28.7 E	23	60
Julius Caesar	9.0 N	15.4 E	90	60	Possibly Nectarian
Käastner	6.8 S	78.5 E	108	81
Kiess	6.4 S	84.0 E	63	81
Klaproth	69.8 S	26.0 W	119	137
La Caille	23.8 S	1.1 E	67	95
Lagalla	44.6 S	22.5 W	85	111
Lagrange	32.3 S	72.8 W	225	109
Lagrange R	31.3 S	76.5 W	130	91	Covered by Orientale Basin ejecta; may not be crater
Lamarck	22.9 S	69.8 W	100	92
Lamarck D	25.0 S	74.1 W	131	91
Lavoisier	38.2 N	81.2 W	70	22	Possibly Nectarian or younger
Le Gentil	74.6 S	75.7 W	128	136	May not be a crater
Legendre	28.9 S	70.2 E	78	99
Legendre K	29.8 S	72.8 E	90	99
Licetus	47.1 S	6.7 E	74	112
Longomontanus Z	50.0 S	18.7 W	95	126
Lyot	49.8 S	84.5 E	132	129
Lyot H	51.4 S	78.2 E	63	129
Lyot L	54.4 S	83.1 E	70	129
Maestlin R	3.5 N	41.5 W	61	57
Maginus	50.5 S	6.3 W	194	126
Malapert	84.9 S	12.9 E	69	144
Manzinus	67.7 S	26.8 E	98	138
Mee	43.7 S	35.3 W	126	111
Messala	39.2 N	60.5 E	125	28
Meton	73.6 N	18.8 E	130	4
Meton C	70.6 N	19.0 E	77	4
Meton D	72.2 N	24.7 E	78	4
Montanari	45.8 S	20.6 W	76	111
Mouchez	78.3 N	26.6 W	81	3
Murchison	5.1 N	0.1 W	57	59
Mutus	63.6 S	30.1 E	77	127
Nansen F	84.7 N	60.0 E	62	1
Nasmyth	50.5 S	56.2 W	76	124
Nearch	58.5 S	39.1 E	75	127
Newton A	79.7 S	19.7 W	64	137
Newton G	78.2 S	18.3 W	67	137
Nonius	34.8 S	3.8 E	69	112
Oenopides	57.0 N	64.1 W	67	10
Orontius	40.6 S	4.6 W	105	112
Parrot	14.5 S	3.3 E	70	77
Peary	88.6 N	33.0 E	73	1
Peirescius	46.5 S	67.6 E	61	115
Petermann R	75.0 N	56.7 E	115	5
Phillips D	25 S	70.8 E	61	99
Phillips W	25.3 S	72.8 E	63	99
Philolaus C	71.1 N	32.7 W	95	3
Philolaus D	73.9 N	27.8 W	91	3
Philolaus G	69.0 N	23.6 W	95	3
Piazzi	36.6 S	67.9 W	134	109
Pictet	43.6 S	7.4 W	62	112
Pictet E	41.3 S	7.7 W	70	112
Playfair G	24.2 S	6.7 E	94	95
Poncelet	75.8 N	54.1 W	69	2
Poncelet C	77.4 N	73.7 W	67	2
Pontecoulant F	57.4 S	67.7 E	60	128
Ptolemaeus	9.3 S	1.9 W	164	77
Purbach	25.5 S	2.3 W	115	95
Rabbi Levi	34.7 S	23.6 E	81	113
Rayleigh	29.3 N	89.6 E	114	45
Regiomontanus	28.3 S	1.0 W	108	95
Repsold	51.3 N	78.6 W	109	10	Possibly Nectarian
Repsold C	48.9 N	73.6 W	133	10	Possibly Nectarian
Riccioli	3.3 S	74.6 W	139	73	Possibly Nectarian
Riccius	36.9 S	26.5 E	71	113
Riemann	38.9 N	86.8 E	163	29
Rosenberger	55.4 S	43.1 E	95	128
Rothmann G	28.4 S	24.3 E	92	96
Russsell	26.5 N	75.4 W	103	37
Sacrobosco	23.7 S	16.7 E	98	96
Sasserides	39.1 S	9.3 W	90	112
Scheiner	60.5 S	27.5 W	110	125	Possibly Nectarian
Schickard	44.3 S	55.3 W	206	110
Schiller H	50.8 S	37.7 W	66	125
Schorr A	20.5 S	88.4 E	64	99	Should be on Plate 6A, not 7A
Schumacher	42.4 N	60.7 E	60	28	Not on Plate 6A
Scott	82.1 S	48.5 E	103	144
Segner	58.9 S	48.3 W	67	125
Short	74.6 S	7.3.0 W	70	137
Short B	75.5 S	5.0 W	71	137
Simpelius	7.03 S	15.2 E	70	138
Sirsalis E	8.1 S	56.5 W	72	74
Sirsalis Z	10.7 S	61.9 W	91	74
South	58.0 N	50.8 W	104	10
Stöfler	41.1 S	6.0 E	126	112
Stöfler J	42.2 S	2.4 E	76	112
Struve	22.4 N	77.1 W	164	37	Possibly Nectarian
Thebit P	24.0 S	5.7 W	78	95	Flooded by Mare Nubium; may not be a crater
Vega	45.4 S	63.4 E	75	115
Vendelinus	16.4 S	61.6 E	131	98
Vlacq	53.3 S	38.8 E	89	127
Volta	53.9 N	84.4 W	123	21
W. Bond	65.4 N	4.5 E	156	3
Walther	33.1 S	1.0 E	128	112	Not on Plate 6A (see entry in Table 2.1)
Weiss	31.8 S	19.5 W	66	94	Flooded by Mare Nubium; may not be a crater
Wichmann R	6.6 S	39.0 W	62	75
Wilhelm	43.4 S	20.4 W	106	111
Wilson	69.2 S	42.4 W	69	136
Wurzelbauer	33.9 S	15.9 W	88	111
Xenophanes	57.5 N	82.0 W	125	21
Young	41.5 S	50.9 E	71	114
Zagut	32.0 S	22.1 E	84	113

Table 1.2 Pre-Nectarian System, Farside, Plate 6B
Feature	Latitude	Longitude	Diam. (km)	LAC	Comment
Aitken C	14.0 S	175.8 E	74	86
Alekhin	68.2 S	131.3 W	70	142
Al-Khwarizmi B	9.0 N	107.4 E	62	64
Al-Khwarizmi G	6.9 N	107.1 E	95	64
Alter	18.7 N	107.5 W	64	54
Amici M	11.8 S	171.9 W	105	86
Amici U	8.7 S	175.5 W	96	86
Apollo	36.1 S	151.8 W	537	121
Artamonov	25.5 N	103.5 E	60	46
Artem'ev G	10.3 N	142.8 W	60	70
Ashbrook	81.4 S	112.5 W	156	144
Avicenna	39.7 N	97.2 W	74	36
Avogardo	63.1 N	164.9 E	139	18
Babcock	4.2 N	93.9 E	99	64
Babcock H	3.0 N	96.5 E	63	64
Barbier	23.8 S	157.9 E	66	103	Likely to be Nectarian: should be on Plate 7B, not 6B
Becquerel	40.7 N	129.7 E	65	30
Bĕcvář	2.9 S	124.5 E	67	83
Beijerinck	13.5 S	151.8 E	70	85
Berlage	63.2 S	162.8 W	92	133
Birkhoff	58.7 N	146.1 W	345	19
Birkhoff X	62.1 N	149.7 W	77	19
Blackett	37.5 S	116.1 W	141	122
Boltzmann	81.4 S	112.5 W	76	143
Bolyai	33.6 S	125.9 E	135	117
Bolyai L	36.3 S	126.2 E	73	117
Bragg	42.5 N	102.9 W	84	36
Brashear P	76.8 S	175.7 W	71	141
Bronk	26.1 N	134.5 W	64	52
Brouwer	36.2 S	126.0 W	158	122	Partly covered by Orientale ejecta, likely pre-Nectarian, possibly Nectarian: should be shown on Plate 6A, not 7A
Buisson Z	0.0 S	112.5 E	98	83
Cabannes	60.9 S	169.6 W	80	133	Name is on LAC 132
Cajori	47.4 S	168.8 E	70	119
Campbell	45.3 N	151.4 E	219	31
Carver M	45.0 S	126.8 E	76	117
Chandler	43.8 N	171.5 E	85	32
Chapman	50.4 N	100.7 W	71	21
Chappell	54.7 N	177.0 W	80	18
Chauvenet J	13.9 S	139.3 E	77	84
Chretien	45.9 S	162.9 E	88	119
Chretien C	44.5 S	165.3 E	63	119
Cockcroft	31.3 N	162.6 W	93	51
Comrie K	22.1 N	112.3 W	73	53
Comstock	21.8 N	121.5 W	72	53
Crommelin	68.1 S	146.9 W	94	142
Curie	22.9 S	91.0 E	151	100
Cyrano	20.5 S	157.7 E	80	103	Possibly Nectarian
Daedalus C	4.1 S	178.9 W	68	86
Daedalus W	3.5 S	177.5 E	70	86
Danjon X	10.0 S	122.8 E	65	83
Debye	49.6 N	176.2 W	142	18
Dellinger	6.8 S	140.6 E	81	84
Denning R	17.2 S	141.2 E	72	102
Deutsch	24.1 N	110.5 E	66	47
Duner	44.8 N	179.5 E	62	33
Dyson Q	59.8 N	125.7 W	89	20
Edison	25 N	99.1 E	62	46
Elvey	8.8 N	100.5 W	74	72
Emden	63.3 N	177.3 W	111	18
Engelhardt B	8.3 N	157.7 W	136	69
Eötvös	35.5 S	133.8 E	99	118
Erro	5.7 N	98.5 E	61	64
Esnault-Pelterie	47.7 N	141.4 W	79	34
Espin	28.1 N	109.1 E	75	46
Evans	9.5 S	133.5 W	67	88
Evans Q	11.2 S	136.4 W	137	88
Evershed	35.7 N	159.5 W	66	33
Fabry	42.9 N	100.7 E	184	29
Fermi	19.3 S	122.6 E	183	101
Firsov S	3.6 N	109.8 E	96	64	Name is on LAC 65
Fizeau S	58.7 S	139.9 W	62	134
Florensky	25.3 N	131.5 E	71	48	Formerly Vernadskiy B
Fowler	42.3 N	145.0 W	146	34
Fridman (Friedmann)	12.6 S	126.0W		89	Should be shown on Plate 6B, not 9B
Frost	37.7 N	118.4 W	75	35	Possibly Nectarian
Gagarin	20.2 S	149.2 E	265	102
Galois	14.2 S	151.9 W	222	87
Galois Q	15.2 S	154.7 W	132	87
Garavito	47.5 S	156.7 E	74	119
Gregory	2.2 N	127.2 E	67	65
Gregory Q	0.6 N	125.7 E	68	65
Guyot	11.4 N	117.5 E	92	65
H. G. Wells	40.7 N	122.8 E	114	30
Harkhebi	39.6 N	98.3 E	237	29
Heaviside	10.4 S	167.1 E	165	85
Heaviside K	13.3 S	168.5 E	110	85
Helberg C	23.4 N	100.6 W	70	54
Henyey	13.5 N	151.6 W	63	69
Hess	54.3 S	174.6 E	88	132
Hess Z	52.0 S	174.0 E	73	132
Hirayama	6.1 S	93.5 E	132	82
Houzeau	17.1 S	123.5 W	71	107
Ibn Firnas	6.8 N	122.3 E	89	65
Icarus D	4.3 S	171.2 W	68	86
Idel'son	81.5 S	110.9 E	60	144
Isaev	17.5 S	147.5 E	90	102
Jeans	55.8 S	91.4 E	79	129
Jeans N	58.7 S	90.5 E	64	129
Joliot	25.8 N	93.1 E	164	46	Possibly Nectarian
Joule L	26.1 N	144.1 W	69	52
Jules Verne	35.0 S	147.0 E	143	118
Keeler L	13.3 S	163.2 E	71	85
Kidinnu E	36.3 N	124.5 E	60	30
Klute	37.2 N	141.3 W	75	34
Koch	42.8 S	150.1 E	95	118
Kondratyuk	14.9 S	115.5 E	108	83
Kramers	53.6 N	127.6 W	61	20
Krylov A	38.9 N	165.1 W	63	33
Kugler	53.8 S	103.7 E	65	130
Lamb G	43.2 S	105.9 E	69	116
Lampland	31.0 S	131.0 E	65	102
Landau	41.6 N	118.1 W	214	35
Langemak N	12.9 S	119.0 E	126	83
Laue	28.0 N	96.7 W	87	54	Possibly Nectarian
Lebedev	47.3 S	107.8 E	102	117
Leeuwenhoek E	28.2 S	176.7 W	117	104
Leibnitz	38.3 S	179.2 E	245	120
Leucippus Q	25.9 N	118.8 W	84	53
Levi-Civita	23.7 S	143.4 E	121	102
Lippmann	56.0 S	114.9 W	160	134
Lodygin G				106	Renamed Sternfeld
Lorentz	32.6 N	95.3 W	312	36
Love	6.3 S	129.0 E	84	83
Lundmark	39.7 S	152.5 E	106	118
Mach	18.5 N	149.3 W	180	52
Mandel'shtam	5.4 N	162.4 E	197	67
McLaughlin	47.1 N	92.9 W	79	36
McLaughlin C	48.5 N	91.9 W	60	21
Mees Y	15.7 N	96.6 W	85	72
Mezentsev	72.1 N	128.7 W	89	8
Mezentsev M	68.7 N	126.8 W	74	8
Milne	31.4 S	112.2 E	272	101
Milne P	37.1 S	107.7 E	95	117
Milne Q	34.3 S	107.3 E	75	117
Mineur	25 N	161.3 W	73	51
Minkowski	56.5 S	146.0 W	113	133
Minnaert	67.8 S	179.6 E	125	141
Mitra	18.0 N	154.7 W	92	51
Montgolfier	47.3 N	159.8 W	88	33
Morozov F	5.4 N	130.0 E	60	65
Moseley	20.9 N	90.1 W	90	54	Named on LAC 37
Nassau D	23.7 S	179.2 W	62	104
Nassau F	24.7 S	179.2 E	112	104
Necho P	6.8 S	122.0 E	75	83
Nishina	44.6 S	170.4 W	65	120
Olivier N	56.7 N	137.1 E	63	17
Omar Khayyam	58.0 N	102.1 W	70	21
Oresme	42.4 S	169.2 E	76	119
Oresme U	41.6 S	164.8 E	84	119
Orlov Y	22.8 S	175.1 W	126	104
Ostwald	10.4 N	121.9 E	104	65
Pannekoek	4.2 S	140.5 E	71	84
Pannekoek R	5.4 S	138.3 E	71	84
Paracelsus	23.0 S	163.1 E	83	103
Paracelsus E	23.0 S	167.2 E	66	103
Paracelsus P	24.9 S	161.7 E	63	103
Paraskevopoulos	50.4 N	149.9 W	94	19
Paraskevopoulos S	49.1 N	154.9 W	67	19
Parenago	25.9 N	108.5 W	93	54
Parkhurst	33.4 S	103.6 E	96	116
Paschen	13.5 S	139.8 W	124	88
Pasteur	11.9 S	104.6 E	224	82
Pavlov M	32.3 S	141.8 E	74	118
Perepelkin	10.0 S	129.0 E	97	83
Planck	57.9 S	136.8 E	314	131
Planck Z	56.4 S	135.2 E	72	131
Poczobutt	57.1 N	98.8 W	195	21
Poincaré	56.7 S	163.6 E	319	132
Poinsot	79.5 N	145.7 W	68	8
Polzunov	25.3 N	114.6 E	67	47
Popov	17.2 N	99.7 E	65	46
Prager	3.9 S	130.5 E	60	84
Prager G	4.6 S	134.0 E	76	84
Richardson	31.1 N	100.5 E	141	46	Name is on LAC 29
Roberts	71.1 N	174.5 W	89	7
Röntgen	33.0 N	91.4 W	126	36
RozhdestvenskIy	85.2 N	155.4 W	177	1
RozhdestvenskIy W	84.8 N	137.2 E	75	1
Rumford T	28.6 S	172.1 E	108	104
Rynin	47.0 N	103.5 W	75	36
Saenger B	5.6 N	103.1 E	64	64
Saha C	1.4 N	107.8 E	64	64
Schlesinger	47.4 N	138.6 W	97	34
Schlesinger B	51.4 N	134.9 W	66	20
Seares	73.5 N	145.8 E	110	7
Seidel	32.8 S	152.2 E	62	118
Shayn	32.6 N	172.5 E	93	32
Shternberg	19.5 N	116.3 W	70	53
Sniadecki Q	23.0 S	170.1 W	77	104
St. John	10.2 N	150.2 E	68	67	Named on 66
Stebbins	64.8 N	141.8 W	131	8
Stefan	46.0 N	108.3 W	125	36
Sternfeld	19.6 S	141.2 W	100	106	Formerly Ladygin G
Stetson	39.6 S	118.3 W	64	122
Störmer C	58.3 N	150.6 E	61	17
Subbotin	29.2 S	135.3 E	67	102
Szilard	34.0 N	105.7 E	122	29
Teisserenc	32.2 N	135.9 W	62	34
Thiessen	75.4 N	169.0 W	66	8
Thomson	32.7 S	166.2 E	117	119
Thomson M	35.7 S	166.0 E	119	119
Tikhomirov	25.2 N	162.0 E	65	49
Tikhov	62.3 N	171.7 E	83	18
Titius	26.8 S	100.7 E	73	100
Tsander	6.2 N	149.3 W	181	70
Van der Waals	43.9 S	119.9 E	104	117
Van Maanen	35.7 N	128.0 E	60	30
Van't Hoff	62.1 N	131.8 W	92	20
Ventris	4.9 S	158.0 E	95	85
Vernadskiy B				48	Renamed Florensky
Vernadskiy X	25.9 N	129.0 E	64	47
Vertregt	19.8 S	171.1 E	187	104
Vestine	33.9 N	93.9 E	96	29
Vetchinkin	10.2 N	131.3 E	98	66
von Bekesy	51.9 N	126.8 E	96	16
Von Karman	44.8 S	175.9 E	180	119
Von Kármán M	47.2 S	176.2 E	225	119	Name is on LAC 132
Von Zeipel	42.6 N	141.6 W	83	34
Watson	62.6 S	124.5 W	62	134
Weyl	17.5 N	120.2 W	108	53
Wiener K	39.3 N	147.8 E	101	31
Wilsing	21.5 S	155.2 W	73	105
Winlock M	32.3 N	106.0 W	68	36
Wyld	1.4 S	98.1 E	93	82
Yablochkov	60.9 N	128.3 E	99	16
Yamamoto	58.1 N	160.9 E	76	18
Zhiritsky F	24.9 S	121.6 E	75	101
Zsigmondy S	59.7 N	106.7 W	64	21
Zwicky	15.4 S	168.1 E	150	85	Name is on LAC 103

Chapter 2. The Nectarian System

In the Nectarian System, two groups of basins help to define the system. Group 1 is relatively old: the Korolev and Moscoviense basins are within this group. If a crater judged to be in the Nectarian System is overlain by either of these basins, it may possibly be pre-Nectarian, but it is not Lower Imbrian. On the other hand, if a crater judged to be Nectarian overlies one of the basins of the younger Group 2 (Crisium, Hertzsprung, Humboldtianum, or Mendeleev), it is possibly Lower Imbriam, but is not pre-Nectarian. When a crater is partly covered by Imbrian ejecta (typically from either the Imbrium Basin or the Orientale Basin) it is difficult to judge its proper system. Of course, if it is partly covered by Imbrium ejecta it cannot be younger than Nectarian, and if partly covered by Orientale ejecta, it cannot be younger than Lower Imbriam, but still can be judged to be Nectarian.

Table 2.1 Nectarian System, Nearside, Plate 7A
Feature	Latitude	Longitude	Diam. (km)	LAC	Comments
Abel B	36.7 S	82.8 E	41	116
Abel L	34.4 S	82.6 E	67	116	Partly covered by Imbrian ejecta
Abulfeda	13.8 S	13.9 E	65	78	Partly covered by Imbrian ejecta
Adams	31.9 S	68.2 E	66	98
Agatharchides P	20.2 S	28.7 W	66	94	Flooded by mare
Albategnius	11.7 S	4.3 E	114	77	Partly covered by Imbrian ejecta
Aliacensis	30.6 S	5.2 E	79	95	Partly covered by Imbrian ejecta
Almanon	16.8 S	15.2 E	49	96	Partly covered by Imbrian ejecta
Alphonsus	13.7 S	3.2 W	108	77	Partly covered by Imbrian ejecta
Amundsen	84.3 S	85.6 E	101	144
Ansgarius	12.7 S	79.7 E	94	81	Younger than  Crisium Basin
Apianus	26.9 S	7.9 E	63	95	Partly covered by Imbrian ejecta
Apollonius	4.5 N	61.1 E	53	62	Younger than Crisium Basin
Aston	32.9 N	87.7 W	43	36	Partly covered by Imbrian ejecta
Azophi	22.1 S	12.7 E	47	96	Partly covered by Imbrian ejecta
Baco	51.0 S	19.1 E	69	127	Possibly Pre-Nectarian
Baco A	52.8 S	20.2 E	39	127
Baco B	49.5 S	16.6 E	43	127
Bailly	66.5 S	69.1 W	287	136	Partly covered by Imbrian ejecta
Bailly A	69.3 S	59.5 W	38	136
Bailly B	68.8 S	63.1 W	65	136
Balboa	19.1 N	83.2 W	69	37	Partly covered by Imbrian ejecta, possibly pre-Nectarian
Ball	35.9 S	8.4 W	41	112	Possibly  Lower Imbrian
Ball C	37.7 S	8.7 W	31	112
Barocius B	44.0 S	18.3 E	39	113
Bartels	24.5 N	89.8 W	55	37	Partly covered by Imbrian ejecta
Bayer	51.6 S	35.0 W	47	125
Beaumont	18.0 S	28.8 E	53	96
Behaim	16.5 S	79.4 E	55	99
Bel'kovich A	58.7 N	86.0 E	58	15	Younger than Humboldtianum Basin
Berosus	33.5 N	69.9 E	74	28	Partly covered by Imbrian ejecta, younger than Crisium Basin
Berzelius	36.6 N	50.9 E	50	27	Older than Crisium Basin
Biela	54.9 S	51.3 E	76	128
Biela B	56.5 S	49.6 E	43	128
Billy	13.8 S	50.1 W	45	74	Partly covered by Orientale ejecta; possibly Lower Imbrian
Blancanus	63.8 S	21.4 W	117	125
Blancanus C	66.5 S	28.0 W	46	137
Bohnenberger A	17.8 S	40.1 E	30	97
Borda	25.1 S	46.6 E	44	97
Boss L	50.9 N	82.3 E	40	15	Younger than Humboldtianum Basin
Boussingault A	69.9 S	54.0 E	72	138
Brenner A	40.4 S	40.0 E	32	114
Burckhardt E	30.6 N	55.7 E	39	44	Younger than Crisium Basin
Byrgius	24.7 S	65.3 W	87	92	Partly covered by Imbrian ejecta
C. Mayer B	60.2 N	15.6 E	36	13	Partly covered by Imbrian ejecta
Cabeus B	82.4 S	53.0 W	61	144
Cannon	19.9 N	81.4 E	56	45	Older than Crisium Basin, possibly pre-Nectarian
Capella	7.5 S	35.0 E	49	79
Capuanus	34.1 S	26.7 W	59	111	Partly covered by Imbrian ejecta
Catharina	18.1 S	23.4 E	104	96
Cavendish	24.5 S	53.7 W	56	92	Partly covered by Imbrian ejecta
Censorinus N	1.9 S	36.5 E	36	79
Clavius	58.8 S	14.1 W	245	126
Cleomedes	27.7 N	56.0 E	125	44	Younger than Crisium Basin
Cleostratus	60.4 N	77.0 W	62	10	Partly covered by Imbrian ejecta
Cleostratus F	61.5 N	80.4 W	50	21	Partly covered by Imbrian ejecta
Colombo	15.1 S	45.8 E	76	79
Colombo A	14.1 S	44.4 E	42	79
Condorcet	12.1 N	69.6 E	74	62	Younger than Crisium Basin
Condorcet F	8.2 N	73.1 E	37	63	Younger than Crisium Basin
Condorcet P	8.7 N	70.4 E	46	63	Younger than Crisium Basin
Cook	17.5 S	48.9 E	46	97
Curtius	67.2 S	4.4 E	95	137
Curtius B	63.7 S	4.7 E	41	126
Cusanus	72.0 N	70.8 E	63	5	Younger than Humboldtianum Basin
Cyrillus	13.2 S	24.0 E	98	78
Cysatus	66.2 S	6.1 W	48	137
de Gasparis	25.9 S	50.7 W	30	92	Partly covered by Imbrian ejecta
De Sitter	80.1 N	39.6 E	64	1
De Sitter A	80.2 N	26.6 E	36	1
De Sitter M	81.3 N	38.5 E	81	1
De Vico T	18.7 S	61.8 W	41	92	Partly covered by Imbrian ejecta
Debes	29.5 N	51.7 E	30	44	Younger than Crisium Basin
Debes A	28.8 N	51.5 E	33	44	Younger than Crisium Basin
Deluc	55.0 S	2.8 W	46	126
Demonax	77.9 S	60.8 E	128	139
Descartes	11.7 S	15.7 E	48	78	Partly covered by Imbrian ejecta
Doppelmayer	28.5 S	41.4 W	63	93
Drebbel	40.9 S	49.0 W	30	110	Partly covered by Orientale ejecta, possibly  Lower Imbrian
Dubyago	4.4 N	70.0 E	51	62
Eimmart	24.0 N	64.8 E	46	44	Younger than Crisium Basin
Endymion	53.9 N	57.0 E	123	14	Younger than Humboldtianum Basin
Endymion B	59.8 N	67.2 E	59	14	Younger than Humboldtianum Basin
Epigenes	67.5 N	4.6 W	55	3	Partly covered by Imbrian ejecta
Fermat	22.6 S	19.8 E	38	96
Firmicus	7.3 N	63.4 E	56	62	Younger than Crisium Basin
Fourier	30.3 S	53.0 W	51	92	Possibly  Lower Imbrian
Fourier A	30.2 S	49.5 W	32	93
Fracastorius	21.5 S	33.2 E	112	97
Fraunhofer C	42.9 S	64.7 E	38	115
Furnerius Q	39.5 S	67.3 E	30	115
Galvani	49.6 N	84.6 W	80	21	Partly covered by Imbrian ejecta; possibly pre-Nectarian or Lower Imbrian
Gasssendi	17.6 S	40.1 W	101	93
Gaudibert	10.9 S	37.8 E	34	79
Gauss	35.7 N	79.0 E	177	28	Younger than Crisium amd Humboldtianum basins
Gauss B	39.7 N	72.1 E	29	28	Younger than Crisium amd Humboldtianum basins
Geber	19.4 S	13.9 E	44	96
Gibbs	18.4 S	84.3 E	76	99
Goclenius	10.0 S	45.0 E	72	79	Partly covered by later mare deposits
Goddard	14.8 N	89.0 E	89	63	Older than Crisium Basin; possibly pre-Nectarian
Goodacre	32.7 S	14.1 E	46	113
Gutenberg	8.6 S	41.2 E	74	79
Hagecius E	63.3 S	49.1 E	44	128
Hainzel	41.3 S	33.5 W	70	111
Hainzel C	41.1 S	32.8 W	38	111	Possibly Lower Imbrian
Halley	8.0 S	5.7 E	36	77
Hase	29.4 S	62.5 E	83	98	Partly covered by Imbrian ejecta
Hase D	31.0 S	63.3 E	56	98	Partly covered by Imbrian ejecta
Hausen B				135	Renamed Pilátre
Hayn A	62.9 N	70.5 E	54	15
Hayn F	68.0 N	84.0 E	59	5
Hecataeus	21.8 S	79.4 E	167	99
Heinsius Q	39.9 S	14.5 W	35	111
Henry	24.0 S	56.8 W	41	92	Formerly Paul Henry; partly covered by Imbrian ejecta
Hesiodus	29.4 S	16.3 W	42	94
Hevelius	2.2 N	67.6 W	115	56	Partly covered by Imbrian ejecta
Hippalus	24.8 S	30.2 W	57	93	Partly covered by Imbrian ejecta
Holden	19.1 S	62.5 E	47	98
Hommel C	54.8 S	29.6 E	53	127
Hooke	41.2 N	54.9 E	36	27	Older than Humboldtianum Basin
Hubble	22.1 N	86.9 E	80	45	Younger than Crisium Basin
Huggins	41.1 S	1.4 W	65	112
Inghirami	47.5 S	68.8 W	91	109	Partly covered by Imbrian ejecta
Isidorus	8.0 S	33.5 E	42	79
Isidorus B	4.5 S	33.0 E	30	79
Jacobi C	59.8 S	10.6 E	35	127
Jansky	8.5 N	89.5 E	72	63	Younger than Crisium Basin
Jenkins	0.3 N	78.1 E	38	63	Formerly Schubert Z; younger than Crisium Basin
Kircher	67.1 S	45.3 W	72	136
Lacroix	37.9 S	59.0 W	37	110	Partly covered by Orientale ejecta; possibly Lower Imbrian
Lamé	14.7 S	64.5 E	84	80
Lavoisier D				22	Renamed  von Braun
Lavoisier E	40.9 N	80.4 W	49	22	Partly covered by Imbrian ejecta
Le Monnier	26.6 N	30.6E	60	43	Possibly pre-Nectarian
Lee	30.7 S	40.7 W	41	93
Lexell	35.8 S	4.2 W	62	112	Erroneously shown as Eratosthenian on Plate 10A
Licetus F	46.0 S	1.0 E	32	112
Liebig	24.3 S	48.2 W	37	93	Partly covered by Imbrian ejecta
Lilius	54.5 S	6.2 E	61	126
Lilius A	55.4 S	8.8 E	41	126
Lockyer	46.2 S	36.7 E	34	114
Lohrmann	0.5 S	67.2 W	30	74	Partly covered by Imbrian ejecta
Longomontanus	49.6 S	21.8 W	157	125
Longomontanus C	53.4 S	19.0 W	31	126
Lubiniezky	17.8 S	23.8 W	43	94
Lyapunov	26.3 N	89.3 E	66	45	Younger than Crisium Basin
Lyot A	49.0 S	79.6 E	38	129
Maclaurin	1.9 S	68.0 E	50	80	Younger than Crisium Basin
Magelhaens	11.9 S	44.1 E	40	79
Maginus C	51.7 S	9.4 W	42	126
Mallet B	46.6 S	52.0 E	32	114
Maraldi	19.4 N	34.9 E	39	43
Marinus	39.4 S	76.5 E	58	115
Marinus C	38.0 S	73.5 E	37	115
Marinus R	38.0 S	75.3 E	44	115	Not on Plate 7A
Mason	42.6 N	30.5 E	33	26	Partly covered by Imbrian ejecta; possibly pre-Nectarian
Maurolycus	42.0 S	14.0 E	114	113
Mercator	29.3 S	26.1 W	46	94	Partly covered by later mare deposits
Mercurius	46.6 N	66.2 E	67	28	Younger than Humboldtianum Basin
Mercurius M	50.9 N	73.9 E	40	15	Younger than Humboldtianum Basin
Mersenius	21.5 S	49.2 W	84	93	Partly covered by Imbrian ejecta
Mersenius D	23.1 S	46.8 W	34	93	Partly covered by Imbrian ejecta
Mersenius P	23.1 S	46.8 W	34	93	Partly covered by Imbrian ejecta
Messala E	40.0 N	64.9 E	40	28	Older than Humboldtianum and Crisium basins
Metius	40.3 S	43.3 E	87	114
Nansen A	82.8 N	63.0 E	46	1	Partly covered by Imbrian ejecta
Nearch A	60.1 S	40.1 E	43	128
Neper	8.5 N	84.6 E	137	63	Younger than Crisium Basin
Neper K	4.9 N	85.8 E	40	63	Younger than Crisium Basin
Neumayer	71.1 S	70.7 E	76	139
Neumayer A	75.0 S	73.6 E	31	139
Newton	76.7 S	16.9 W	78	137
Nicolai	42.4 S	25.9 E	42	113
No name	24.0  N	89.0 E	55	45	Older than Crisium Basin
Nobili (Schubert Y)	0.2 N	75.9 E	42	63	Younger than Crisium Basin
Nöggerath	48.8 S	45.7 W	30	125	Partly covered by Imbrian ejecta
Oken	43.7 S	75.9 E	71	115
Oken N	42.4 S	74.5 E	40	115
Olbers	7.4 N	75.9 W	74	55	Partly covered by Imbrian ejecta
Pallas	5.5 N	1.6 W	46	59	Partly covered by Imbrian ejecta; possibly pre-Nectarian,
Palmieri	28.6 S	47.7 W	40	93
Parry	7.9 S	15.8 W	47	76	Partly covered by Imbrian ejecta; possibly pre-Nectarian
Pascal	74.6 N	70.3 W	115	2	Partly covered by Imbrian ejecta
Paul Henry				92	Renamed Henry
Pentland	64.6 S	11.5 E	56	138
Pentland A	67.4 S	13.5 E	44	138
Pentland C	65.0 S	16.3 E	37	138
Petermann	74.2 N	66.3 E	73	5	Younger than Humboldtianum Basin
Petermann D	77.1 N	65.8 E	31	5	Older than Humboldtianum Basin
Phillips	26.6 S	75.3 E	122	99	Covered by ejecta from Imbrian crater Humboldt; possibly pre-Nectarian or Lower Imbrian
Phillips B	23.3 S	70.5 E	40	99	Older than Crisium Basin; possibly pre-Nectarian; mislabeled "D" on LAC 99
Phocylides	52.7 S	57.0 W	121	124	Partly covered by Imbrian ejecta
Pilátre	60.3 S	86.4 W	69	135	Partly covered by Orientale and Hausen ejecta; formerly Hausen B
Pingré	58.7 S	73.7 W	88	124	Partly covered by Imbrian ejecta
Pingré H				124	Renamed Yakovkin
Pingré S	60.3 S	82.0 W	70	135	Partly covered by Imbrian ejecta
Pitatus	29.9 S	13.5 W	106	94	Partly covered by later deposits
Pitiscus	50.4 S	30.9 E	82	127
Plana	42.2 N	28.2 E	44	26	Partly covered by Imbrian ejecta, possibly pre-Nectarian
Playfair	23.5 S	8.4 E	47	95	Partly covered by Imbrian ejecta
Polybius	22.4 S	25.6 E	41	96
Poncelet A	79.5 N	74.7 W	31	2	Partly covered by Imbrian ejecta
Pons	25.3 S	21.5 E	41	96
Pontecoulant	58.7 S	66.0 E	91	128	Possibly Lower Imbrian
Porter	56.1 S	10.1 W	51	126
Regnault	54.1 N	88.0 W	46	21	Partly covered by Imbrian ejecta
Reichenbach	30.3 S	48.0 E	71	97
Reichenbach B	28.4 S	48.0 E	44	97
Repsold G	50.5 N	80.6 W	44	21	Partly covered by Imbrian ejecta
Rheita	37.1 S	47.2 E	70	114
Riccioli C	0.6 N	73.0 W	31	55	Partly covered by Orientale ejecta, possibly Lower Imbrian
Rocca	12.7 S	72.8 W	89	73	Partly covered by Orientale ejecta, possibly Lower Imbrian
Rosenberger D	57.5 S	42.9 E	50	128
Rost	56.4 S	33.7 W	48	125
Rost A	56.5 S	36.7 W	39	125
Santbech	20.9 S	44.0 E	64	97
Schickard E	47.2 S	51.6 W	32	110	Partly covered by Orientale ejecta, possibly Lower Imbrian
Schiller	51.9 S	39.0 W	180	125
Schiller C	55.3 S	48.8 W	49	125
Schorr A	20.5 S	88.4 E	64	99	Pre-Nectarian, should be on Plate 6A, not 7A
Schröter	2.6 N	7.0 W	35	59	Partly covered by Imbrian ejecta
Schubert	2.8 N	81.0 E	54	63	Younger than Crisium Basin
Schubert Z				34	Renamed Jenkins
Sirsalis A	12.7 S	61.3 W	49	74	Partly covered by Imbrian ejecta, possibly  Lower Imbrian
Snellius	29.3 S	55.7 E	82	98
Snellius A	27.4 S	53.8 E	37	98
Spallanzani	46.3 S	24.7 E	32	113
Steinheil	48.6 S	46.5 E	67	128	Possible double impact with Watt
Stiborius A	36.9 S	35.5 E	32	114
Strabo	61.9 N	54.3 E	55	14	Younger than Humboldtianum Basin
Street	46.5 S	10.5 W	57	112	Partly covered by ejecta from Copernican crater Tycho; possibly pre-Nectarian
Sylvester	82.7 N	79.6 W	58	1	Partly covered by Imbrian ejecta
Taylor	5.3 S	16.7 E	42	78
Tisserand	21.4 N	48.2 E	36	43	Younger than Crisium Basin
Torricelli R	5.2 S	28.1 E	87	78	Rim surrounds younger 22 km crater Torricelli
Vasco da Gama	13.6 N	83.9 W	83	55	Partly covered by Imbrian ejecta, possibly pre-Nectarian
Vendelinus F	18.5 S	65.0 E	32	98
Vieta	29.2 S	56.3 W	87	92
Vieta A	30.3 S	59.3 W	34	92
Vieta B	30.5 S	60.2 W	40	92
Vlacq D	27.8 S	54.2 W	8	92
von Braun	41.1 N	78.1 W	62	22	Formerly Lavoisier D; partly covered by Imbrian ejecta
Voskresenskiy	28.0 N	88.1 W	49	37	Partly covered by Imbrian ejecta
Walter (see Walther)				112	See Walther; IAU changed name
Walther	33.1 S	1.0 E	128	112	Pre-Nectarian; partly covered by Imbrian ejecta;
Wargentin	49.6 S	60.2 W	84	124	Partly covered by Imbrian ejecta
Watt	49.5 S	48.6 E	66	128	Possible double impact with Steinheil
Weigel B	58.8 S	41.1 W	37	125
Weinek	27.5 S	37.0 E	32	97
Wurzelbauer D	36.3 S	17.6 W	38	111
Yakovkin	54.5 S	78.8 W	37	124	Formerly Pingré H; partly covered by Imbrian ejecta
Young C	41.5 S	48.2 E	30	114
Young D	43.5 S	51.8 E	46	114
Zach	60.9 S	5.3 E	70	126
Zeno	45.2 N	72.9 E	65	28	Younger than Humboldtianum Basin, older than Crisium Basin

Table 2.2 Nectarian System, Farside, Plate 7B
Feature	Latitude	Longitude	Diam. (km)	LAC	Comments
Abbe	57.3 S	175.2 E	66	132
Abul Wafa	1.0 N	116.6 E	55	65
Aitken Y	12.0 S	173.2 E	35	86
Al-Biruni	17.9 N	92.5 E	77	46	Older than Crisium Basin
Alden	23.6 S	110.8 E	104	101
Alden C	22.5 S	111.4 E	50	101
Al-Khwarizmi	7.1 N	106.4 E	65	64
Al-Khwarizmi J	6.2N	107.6E	65	64
Amici N	11.8 S	172.5 W	39	86
Amici R	11.4 S	175.2 W	34	86
Anders	41.3 S	142.9 W	40	121
Anderson	15.8 N	171.1 E	109	68
Anderson F	16.3 N	173.6 E	49	50
Anuchin	49.0 S	101.3 E	57	130
Appleton	37.2 N	158.3 E	63	32	Younger than Moscoviense Basin
Appleton D	38.0 N	160.6 E	37	32	Older than Moscoviense Basin
Appleton R	36.2 N	156.2 E	39	32	Older than Moscoviense Basin
Backlund	16.0 S	103.0 E	75	100
Barbier	23.8 S	157.9 E	66	103	Likely to be Nectarian, possibly pre-Nectarian: should be on Plate 7B, not 6B
Barbier U	22.8 S	155.1 E	38	103
Barringer	28.0 S	149.7 W	68	106	Older than Hertzsprung Basin
Becquerel E	41.0 N	131.5 E	32	31	Younger than Humboldtianum Basin
Becquerel X	42.2 N	128.1 E	34	30	Older than Humboldtianum Basin
Bečvář J	3.6 S	126.6 E	45	83
Beijernick J	14.8 S	153.7 E	40	85
Bel'kovich	61.1 N	90.2 E	214	15	Not on Plate 7B
Bell	21.8 N	96.4 W	86	54	Partly covered by Imbrian ejecta, possibly pre-Nectarian
Bellingsgauzen (Bellingshausen)	60.6 S	164.6 W	63	133
Belopol'skiy (Belopolsky)	17.2 S	128.1 W	59	107	Partly covered by Imbrian ejecta
Belyaev	23.3 N	143.5 E	54	48	Younger than Moscoviense Basin
Belyaev Q	20.6 N	139.4 E	50	48	Younger than Moscoviense Basin
Bergstrand	18.8 S	176.3 E	43	104
Bergstrand Q	20.1 S	175.1 E	59	104
Berkner	25.2 N	105.2 W	86	54	Older than Hertzsprung Basin
Berkner B	29.3 N	104.1 W	33	54
Bhabha	55.1 S	164.5 W	64	133
Bingham	8.1 N	115.1 E	33	65
Birkhoff K	57.8 N	144.3 W	58	19
Birkhoff L	56.6 N	144.8 W	37	19
Birkhoff Q	56.6 N	150.8 W	43	19
Blazhko L	29.3 N	147.6 W	44	52	Younger than Hertzsprung Basin
Bose	53.5 S	170.0 W	91	132
Boyle	53.1 S	178.1 E	57	132
Boyle Z	51.3 S	177.7 E	52	132
Bragg M	39.1 N	102.5 W	45	36
Bragg P	40.0 N	104.4 W	30	36
Bredikhin	17.3 N	158.2 W	59	51	Older than Korolev Basin
Bridgman	43.5 N	137.1 E	80	31	Younger than Humboldtianum and Moscoviense basins
Bridgman F	44.0 N	141.2 E	51	31	Older than Moscoviense Basin
Brouwer	36.2 S	126.0 W	158	122	Partly covered by Orientale ejecta, likely pre-Nectarian; should be shown on Plate 6B, not 7B
Buffon	40.4 S	133.4 W	106	122	Partly covered by Imbrian ejecta
Buisson Y	1.4 N	112.6 E	36	65
Buys-Ballot	20.8 N	174.5 E	55	50	Probably Nectarian, but age uncertain, part of oblique impact cluster?
Buys-Ballot Y	22.9 N	174.0 E	31	50	Probably Nectarian, but age uncertain, part of oblique impact cluster?
Buys-Ballot Z	22.5 N	174.5 E	58	50	Probably Nectarian, but age uncertain, part of oblique impact cluster?
Cabannes Q	63.3 S	174.5 W	49	132
Carnot	52.3 N	143.5 W	126	19
Carver	43.0 S	126.9 E	59	117	Possibly Lower Imbrian
Cassegrain	52.4 S	113.5 E	55	130
Cassegrain B	49.0 S	114.0 E	39	130
Ceraski				131	See Tseraskiy
Ceraski K				131	See Tseraskiy K
Ceraski P				131	See Tseraskiy P
Chaffee	38.8 S	153.9 W	49	121
Chaffee F	38.8 S	152.5 W	35	121
Chamberlin	58.9 S	95.7 E	58	129
Chandler G	43.3 N	175.8 E	33	32	Older than Moscoviense Basin
Chandler P	41.7 N	170.3 E	67	32	Older than Moscoviense Basin
Chang-Heng	19.0 N	112.2 E	43	47
Chaplygin	6.2 S	150.3 E	137	85	Younger than Mendleev Basin
Chappe	61.2 S	91.5 W	59	135	Formerly Hausen A
Charlier	36.6 N	131.5 W	99	35	Older than Hertzsprung Basin
Charlier Z	39.7 N	131.6 W	46	35	Older than Hertzsprung Basin
Chaucer	3.7 N	140.0 W	45	70	Younger than Hertzsprung Basin
Chauvenet	11.5 S	137.0 E	81	84
Chauvenet Q	13.3 S	135.4 E	42	84
Chebyshev	33.7 S	133.1 W	178	122
Chernyshev	47.3 N	174.2 E	58	32
Chretien W	44.3 S	160.8 E	34	119
Clark F	38.4 S	122.5 E	27	117
Coblentz	37.9 S	126.1 E	33	117	Possibly pre-Nectarian
Cockcroft N	29.1 N	163.7 W	56	51
Compton R	52.6 N	91.5 E	37	15	Younger than Humboldtianum Basin
Comrie	23.3 N	112.7 W	59	53	Older than Hertzsprung Basin
Comrie T	23.1 N	115.3 W	43	53	Older than Hertzsprung Basin
Congreve	0.2 S	167.3 W	57	87	Younger than  Korolev Basin
Congreve H	1.2 S	165.2 W	37	87	Younger than Korolev Basin
Congreve L	3.6 S	166.3 W	30	87	Younger than Korolev Basin
Congreve Q	1.4 S	169.6 W	59	87	Younger than Korolev Basin
Congreve U	0.6 N	170.7 W	59	68	Younger than Korolev Basin
Cori	50.6 S	151.9 W	65	133
Coriolis	0.1 N	171.8 E	78	68
Coriolis L	1.9 S	172.7 E	32	86
Coriolis M	1.4 S	171.7 E	31	86
Coulomb	54.7 N	114.6 W	89	20
Coulomb C	57.4 N	110.8 W	34	20
Coulomb P	50.5 N	117.4 W	38	20
Crocco	47.5 S	150.2 E	75	118
Crommelin C	66.4 S	144.8 W	44	142
Crookes D	9.6 S	162.8 W	41	87	Younger than Korolev Basin
Curie C	21.1 S	94.1 E	47	100	Partly covered by ejecta from Imbrian crater Sklodowska
Curie E	22.4 S	96.2 E	43	100	Partly covered by ejecta from Imbrian crater Sklodowska
Curie G	23.6 S	94.8 E	53	100	Partly covered by ejecta from Imbrian crater Sklodowska
Curie M	28.4 S	92.5 E	34	100
D’Alembert	50.8 N	163.9 E	248	18	Younger than Moscoviense Basin
Daedalus G	6.6 S	177.4 W	33	86
Danjon	11.4 S	124.0 E	71	83
Dante C	28.3 N	177.1 W	54	50
De Forest N	79.5 S	164.7 W	41	142
De Moraes	49.5 N	143.2 E	53	17	Younger than Moscoviense Basin, older than Humboldtianum Basin
De Moraes S	48.9 N	140.7 E	45	17	Younger than Moscoviense Basin, older than Humboldtianum Basin
Debye E	50.4 N	171.0 W	41	18
Denning	16.4 S	142.6 E	44	102
Deutsch F	24.1 N	110.5 E	66	47
Deutsch L	24.1 N	112.0 E	31	47
Dewar	2.7 S	165.5 E	50	85
Dobrovol'skiy (Dobrovol'sky)	12.8 S	129.7 E	38	83
Donner	31.4 S	98.0 E	58	100
Douglass	35.9 N	122.4 W	49	35	Older than Hertzsprung Basin
Dreyer	10.0 N	96.9 E	61	64	Very likely Nectarian
Dryden S	33.8 S	158.8 W	30	120	Mislabeled as Dryden T on LAC 120
Dryden T	32.8 S	158.6 W	35	120	Mislabeled as Dryden W on LAC 120
Dufay	5.5 N	169.5 E	39	67
Dufay D	6.3 N	170.5 E	32	68
Dugan	64.2 N	103.3 E	50	6	Older than Humboldtianum Basin
Duner A	47.7 N	179.7 E	38	33
Dyson	61.3 N	121.2 W	63	20
Dyson B	63.6 N	117.6 W	45	20
Dyson M	58.4 N	120.9 W	34	20
Dziewulski	21.2 N	98.9 E	63	46	Older than Crisium Basin, possibly pre-Nectarian
Dziewulski Q	20.5 N	98.2 E	32	46	Younger than Crisium Basin
Edison T	24.7 N	97.1 E	48	46	Younger than Crisium Basin
Ehrlich	40.9 N	172.4 W	30	33
Eijkman	63.1 S	141.5 W	54	133
Einthoven	4.9 S	109.6 E	69	82
Einthoven G	5.3 S	111.8 E	34	83
Ellison P	52.8 N	109.6 W	32	21
Emden D	64.4 N	171.1 W	47	7
Emden U	64.7 N	177.9 E	38	7
Evdokimov	34.8 N	153.0 W	50	34	Older than Hertzsprung Basin, shown as Evdokimov G on LAC 34
Evdokimov G	33.9 N	150.5 W	48	34	Older than Hertzsprung Basin, shown as Evdokimov on LAC 34
Evershed C	38.1 N	156.7 W	48	34
Fechner	59.0 S	124.9 E	63	130
Fersman	18.7 N	126.0 W	151	53	Younger than Hertzsprung Basin; partly covered by Orientale ejecta
Firsov V	5.1 N	110.7 E	44	65
Fitzgerald	27.5 N	171.7 W	110	50
Fitzgerald W	28.7 N	173.8 W	51	50
Fitzgerald Y	31.0 N	172.7 W	34	50
Fleming	15.0 N	109.6 E	106	64
Foster	23.7 N	141.5 W	33	52
Foster L	21.0 N	140.5 W	32	52
Foster S	22.9 N	143.7 W	36	52
Fowler N	40.1 N	146.1 W	39	34
Freundlich	25.0 N	171.0 E	85	50	Younger than Moscoviense Basin
Freundlich G	24.5 N	173.5 E	25	50
Froelich	80.3 N	109.7 W	58	1	Partly covered by Imbrian ejecta
Frost N	35.0 N	119.2 W	43	35	Older than Hertzsprung Basin
Gadomski	36.4 N	147.3 W	65	34	Older than Hertzsprung Basin
Gadomski X	37.8 N	148.3 W	35	34	Probably younger than Hertzsprung Basin
Galois A	14.0 S	152.5 W	54	87	Younger than Hertzsprung Basin
Galois L	15.5 S	152.0 W	51	87	Older than Hertzsprung Basin, younger than Korolev Basin
Galois U	13.2 S	154.7 W	35	87	Older than Hertzsprung Basin, younger than Korolev Basin
Gamow	65.3 N	145.3 E	129	7	Older than Humboldtianum Basin
Gamow V	66.3 N	139.7 E	49	6	Younger than Humboldtianum Basin
Ganskiy (Hansky)	9.7 S	97.0 E	43	82
Ganswindt	79.6 S	110.3 E	74	140
Garavito Q	49.6 S	153.6 E	42	131
Garavito Y	45.5 S	155.6 E	52	119
Gavrilov	17.4 N	130.9 E	60	48	Younger than Moscoviense Basin
Gavrilov K	15.0 N	132.5 E	38	66	Younger than Moscoviense Basin, older than Mendeleev Basin
Geiger R	15.7 S	156.5 E	40	85
Gerasimovich	22.9 S	122.6 W	86	107	Partly covered by Imbrian ejecta
Grave	17.1 S	150.3 E	40	103
Green R	3.4 N	131.0 E	33	66	Younger than Mendeleev Basin
Grissom	47.0 S	147.4 W	58	121
Hagen J	49.0 S	137.2 E	47	131
Hansky				82	See Ganskiy
Haret C	57.2 S	172.8 W	30	132
Harkhebi J	37.4 N	103.4 E	40	29	Younger than Humboldtianum Basin
Harriot	33.1 N	114.3 E	56	30	Older than Humboldtianum Basin
Harriot A	35.6 N	114.9 E	63	30	Older than Humboldtianum Basin
Hartmann	3.2 N	135.3 E	61	66	Younger than Mendeleev Basin, possibly Lower Imbrian; should be shown on Plate 7B, not 11B
Harvey	19.5 N	146.5 W	60	52	Older than Hertzsprung Basin
Hausen A				135	Renamed Chappe
Hayford T	13.3 N	179.5 E	31	68	Compound impacts
Healy	32.8 N	110.5 W	38	35
Healy N	30.9 N	110.8 W	42	53
Helberg	22.5 N	102.2 W	62	54
Henderson	4.8 N	152.1 E	47	67	Younger than Mendeleev Basin
Henderson G	3.6 N	155.8 E	46	67	Older than Mendeleev Basin
Hertz	13.4 N	104.5 E	90	64
Hertzsprung (basin)	2.6 N	129.2 W	591	71
Hertzsprung S	2.6 N	129.2 W	591	71	Younger than Hertzsprung Basin
Heymans	75.3 N	144.1 W	50	8	Probably Nectarian, should be shown on Plate 7B, not 8B
Hilbert	17.9 S	108.2 E	151	100
Hilbert G	19.0 S	114.0 E	50	101
Hilbert L	21.2 S	108.9 E	32	100
Hippocrates	70.7 N	145.9 W	60	8
Hirayama K	8.3 S	94.9 E	39	82
Hirayama Y	4.5 S	93.2 E	50	82	Possibly Lower Imbrian
Hoffmeister	15.2 N	136.9 E	45	66	Younger than Mendeleev Basin
Hoffmeister N	13.7 N	136.4 E	42	66	Younger than Mendeleev Basin
Hogg	33.6 N	121.9 E	38	30	Younger than Humboldtianum Basin
Holetschek R	29.0 S	147.5 E	69	102
Hopmann	50.8 S	160.3 E	88	132
Hutton	37.3 N	168.7 E	50	32	Younger than Moscoviense Basin
Ibn Firnas E	7.5 N	125.5 E	42	65	Younger than Mendeleev Basin
Icarus	5.3 S	173.2 W	96	86	Younger than Korolev Basin
Icarus J	7.3 S	170.9 W	32	86	Younger than Korolev Basin
Icarus V	3.9 S	176.0 W	36	86
Innes Z	29.8 N	119.2 E	33	47	Younger than Humboldtianum Basin
Jansky F	8.8 N	92.2 E	50	64	Younger than Crisium Basin
Jarvis	34.9 S	147.5 W	38	121	Formerly Borman Z
Jeans X	53.5 S	89.4 E	44	129
Joule	27.3 N	144.2 W	96	52	Younger than Hertzsprung Basin
Jules Verne C	33.2 S	149.7 E	30	118
Jules Verne P	38.0 S	145.1 E	62	118
Kamerlingh Onnes	15.0 N	115.8 W	66	71	Partly covered by Imbrian ejecta
Karrer	52.1 S	141.8 W	51	133
Kekulé	16.4 N	138.1 W	94	52	Younger than Hertzsprung Basin
Kekulé V	18.4 N	142.0 W	67	52	Not on Plate 7B
Kepinski	28.8 N	126.6 E	31	47	Younger than Moscoviense Basin, older than Humboldtianum Basin
Khvol'son (Khwolson)	13.8 S	111.4 E	54	83
Kibal’chich	3.0 N	146.5 W	92	70	Younger than Hertzsprung Basin
Klute X	39.5 N	143.0 W	40	34
Kohlschütter	14.4 N	154.0 E	53	67	Older than Mendeleev Basin
Kohlschütter W	16.3 N	151.2 E	32	49	Younger than Mendeleev Basin
Kolhörster	11.2 N	114.6 W	97	71	Partly covered by Imbrian ejecta
Komarov	24.7 N	152.5 E	78	49	Younger than Moscoviense Basin
Konstantinov	19.8 N	158.4 E	66	49	Younger than Moscoviense Basin
Korolev (basin)	4.0 S	157.4 W	437	87
Korolev C	1.3 S	153.2 W	68	87	Older than Hertzsprung Basin, younger than Korolev Basin
Korolev E	3.9 S	153.2 W	37	87	Younger than Hertzsprung  and Korolev basins
Korolev L	6.0 S	156.7 W	30	87	Younger than Hertzsprung and Korolev basins
Korolev M	8.8 S	157.3 W	58	87	Younger than Hertzsprung and Korolev basins
Kostinskiy (Kostinsky)	14.7 N	118.8 E	75	65
Kovalevskaya Q	29.4 N	131.0 W	101	52	Older than Hertzsprung Basin
Koval'sky H (Koval'skiy H)	22.5 S	102.6 E	37	100	Younger than Korolev Basin
Kozyrev	46.8 S	129.3 E	65	117	Formerly Carver K
Krasovsky J (Krasovskiy J)	3.2 N	174.1 W	32	68	Younger than Korolev Basin
Krasovsky P (Krasovskiy P)	0.8 N	177.3 W	41	68
Kugler N	56.3 S	102.8 E	42	130
Kulik K	39.1 N	151.6 W	42	34
Kurchatov	38.3 N	142.1 E	106	31	Older than Moscoviense Basin
Kurchatov W	40.4 N	140.4 E	33	31	Older than Moscoviense Basin
Lamb	42.9 S	100.1 E	106	116
Lampland K	33.0 S	132.5 E	47	118
Lampland R	31.7S	129.2E	45	101
Lander	15.3 S	131.8 E	40	84	Partly covered by ejecta from Upper Imbrian crater Tsiolkovskiy; not named on LAC 84
Langevin	44.3 N	162.7 E	58	32	Older than Moscoviense Basin
Langmuir	35.7 S	128.4 W	91	122	Possibly Lower Imbrian
Larmor	32.1 N	179.7 W	97	33
Leavitt	44.8 S	139.3 W	66	121	Possibly younger than Nectarian
Leavitt Z	42.7 S	133.2 W	65	121	May be dual impact with Leavitt
Lebedinskiy A	10.9 N	163.7 W	38	69
Leeuwenhoek	29.3 S	178.7 W	125	104
Lemaitre	61.2 S	149.6 W	91	133
Lemaitre F	61.4 S	148.4 W	32	133
Lemaitre S	61.6 S	156.3 W	34	133
Leonov	19.0 N	148.2 E	33	48	Younger than Mendeleev and Moscoviense basins
Leucippus	29.1 N	116.0 W	56	53	Older than Hertzsprung Basin
Leucippus X	33.4 N	118.8 W	36	35	Older than Hertzsprung Basin
Levi-Civita S	24.1 S	138.8 E	43	102
Ley	42.2 N	154.9 E	79	32	Possibly pre-Nectarian
Lindblad	70.4 N	98.8 W	66	9	Partly covered by Imbrian ejecta; possibly pre-Nectarian
Lobachevsky M	8.0 N	112.8 E	41	65
Lodygin	17.7 S	146.8 W	62	106
Lorentz P	31.8 N	98.5 W	38	54
Lorentz R	33.4 N	99.2 W	33	36
Love G	6.5 S	131.3 E	54	84	Older than Mendeleev Basin
Lyman V	62.6 S	154.2 E	37	131
Malyy	21.9 N	105.3 E	41	46	Probably Nectarian, but age uncertain
Mandel'shtam A	5.7 N	162.4 E	64	67
Mandel'shtam T	5.7 N	160.4 E	37	67
Mandel'shtam Y	9.1 N	161.8 E	32	67
Marconi L	11.7 S	145.3 E	38	84	Older than Mendeleev Basin
Mariotte R	30.1 S	141.6 W	33	106
Mariotte U	27.9 S	142.8 W	34	106
Mariotte Y	23.3 S	140.3 W	46	106
Maxwell	30.2 N	98.9 E	107	46	Younger than Humboltianum Basin
McKellar	15.7 S	170.8 W	51	86
McKellar T	15.1 S	173.0 W	45	86
McKellar U	13.9 S	174.5 W	37	86
McMath	17.3 N	165.6 W	86	51
Mechnikov	11.0 S	149.0 W	60	88	Older than Hertzsprung Basin
Mechnikov C	9.9 S	148.0 W	35	88	Older than Hertzsprung Basin
Meggers S	24.0 N	119.8 E	42	47
Meitner	10.5 S	112.7 E	87	83
Mendel	48.8 S	109.4 W	138	135	Partly covered by Orientale ejecta; possibly pre-Nectarian
Mendel V	46.7 S	116.7 W	66	122	Partly covered by Orientale ejecta; possibly Lower Imbrian
Mendeleev (basin)	5.7 N	140.9 E	313	66
Merrill	75.2 N	116.3 W	57	9	Partly covered by Imbrian ejecta
Meshcherskiy	12.2 N	125.5 E	65	65	Older than Mendeleev Basin
Michelson	7.2 N	120.7 W	123	71	Younger than Hertzsprung Basin
Milankovič	77.2 N	168.8 E	101	7
Milankovič E	78.0 N	177.2 W	46	7
Millikan	46.8 N	121.5 E	98	30	Younger than HumboldtianumBasin
Millikan Q	43.9 N	118.6 E	33	30	Older than Humboldtianum Basin
Mills	8.6 N	156.0 E	32	67	Younger than Mendeleev Basin
Milne M	35.7 S	112.1 E	54	117
Mitra A	20.8 N	154.1 W	46	51	Older than Hertzsprung and Korolev basins
Mohorovičić	19.0 S	165.0 W	51	105
Moiseev Z	11.2 N	103.4 E	80	64
Morozov Y	7.3 N	127.0 E	45	65	Older than Mendeleev Basin
Moulton	61.1 S	97.2 E	49	129
Moulton H	61.5 S	100.6 E	44	130
Nagaoka	19.4 N	154.0 E	46	49	Younger than Mendeleev Basin
Nansen	80.9 N	95.3 E	104	1	Older than Humboldtianum Basin; possibly pre-Nectarian
Nassau	24.9 S	177.4 E	76	104
Nernst	35.3 N	94.8 W	116	36
Neujmin	27.0 S	125.0 E	101	101
Neujmin P	28.5 S	124.2 E	38	101
Niepce	72.7 N	119.1 W	57	9	Possibly pre-Nectarian, IAU changed spelling from Niépce
Nobel	15.0 N	101.3 W	48	72	Partly covered by Imbrian ejecta, possibly pre-Nectarian or Lower Imbrian
Nobel L	12.5 N	100.9 W	38	72	Partly covered by Imbrian ejecta, possibly Lower Imbrian
Nöther  (Noether)	66.6 N	113.5 W	67	9	Partly covered by Imbrian ejecta
Nöether T	66.3 N	121.5 W	44	9
Numerov	70.7 S	160.7 W	113	142
Nuŝl S	31.2 N	164.1 E	42	49
Nuŝl Y	34.3 N	166.9 E	51	32
Oberth	62.4 N	155.4 E	60	17
Obruchev	38.9 S	162.1 E	71	119	Possibly pre-Nectarian
Olcott E	20.9 N	119.8 E	59	47
Olivier	59.1 N	138.5 E	69	17	Older than Humboldtianum Basin
Oppenheimer	35.2 S	166.3 W	208	120
Oppenheimer F	34.7 S	161.5 W	35	120
Oppenheimer H	36.5 S	163.1 W	33	120
Orlov	25.7 S	175.0 W	81	104
Paneth	63.0 N	94.8 W	65	21	Partly covered by Imbrian ejecta
Papaleksi	10.2 N	164.0 E	97	67
Paraskevopoulos Y	53.1 N	150.4 W	46	19
Parkhurst B	32.0 S	104.4 E	30	100
Parkhurst Q	35.0 S	101.6 E	37	116
Parsons	37.3 N	171.2 W	40	33
Parsons N	37.3 N	171.2 W	40	33
Paschen M	16.1 S	140.0 W	94	106	Older than Hertzsprung Basin
Pasteur T	11.6 S	100.1 E	41	82	Not on Plate 7B
Pasteur U	9.8 S	101.5 E	37	82
Pasteur Y	11.6 S	100.1 E	41	82
Pavlov	28.8 S	142.5 E	148	102
Pawsey	44.5 N	145.0 E	60	31	Older than Moscoviense Basin
Perel'man	24.0 S	106.0 E	46	100
Perkin	47.2 N	175.9 W	62	33
Perrine	42.5 N	127.8 W	86	35	Older than Hertzsprung Basin
Perrine L	39.2 N	127.2 W	37	35	Older than Hertzsprung Basin
Perrine S	42.5 N	128.6 W	63	35	Older than Hertzsprung Basin
Petropavlovskiy (Petropavlovsky)	37.2 N	114.8 W	63	35
Petzval	62.7 S	110.4 W	90	134
Pikel'ner K	50.3 S	124.8 E	36	130
Pikel'ner S	48.7 S	120.2 E	62	130
Pirquet	20.3 S	139.6 E	65	102
Pizzetti	34.9 S	118.8 E	44	117
Planck B	56.0 S	137.4 E	46	131
Plummer	25.0 S	155.0 W	73	105
Plummer N	27.7 S	156.3 W	42	105
Pogson	42.2 S	110.5 E	50	117
Poincaré R	60.2 S	155.0 E	52	131
Poincaré Z	53.7 S	164.9 E	35	132
Poynting	18.1 N	133.4 W	128	52	Partly covered by Imbrian ejecta; younger than Hertzsprung Basin
Prager C	1.4 S	132.4 E	40	84	Younger than Mendeleev Basin
Prandtl	60.1 S	141.8 E	91	131
Priestly	57.3 S	108.4 E	52	130
Priestly K	59.0 S	110.5 E	35	130
Purkyne S	1.8 S	90.6 E	34	82
Purkyne U	0.7 S	91.9 E	51	82
Quetelet	43.1 N	134.9 W	55	34	Older than Hertzsprung Basin
Quetelet T	42.8 N	137.6 W	46	34	Younger than Hertzsprung Basin
Racah	13.8 S	179.8 W	63	86
Raimond	14.6 N	159.3 W	70	69	Younger than Korolev Basin
Ramsay	40.2 S	144.5 E	81	118
Razumov	39.1 N	114.3 W	70	35
Riedel	48.9 S	139.6 W	47	134
Riemann J	37.4 N	90.2 E	39	29	Older than Humboldtianum Basin
Roberts M	68.2 N	174.3 W	46	7	Possibly Lower Imbrian: should be on Plate 7B, not 8B
Roberts N	69.0 N	176.3 W	49	7
Roche	42.3 S	136.5 E	160	118
Roche U				118	See Rosseland
Rosseland	41.0 S	131.0 E	75	118	Formerly Roche U
Rowland	57.4 N	162.5 W	171	19
Rowland M	51.9 N	162.4 W	58	19	Possibly pre-Nectarian
Rowland Y	59.1 N	163.0 W	54	19	Probably Lower Imbrian, should be on Plate 8B, not 7B
Saenger	4.3 N	102.4 E	75	64	Possibly pre-Nectarian
Saha	1.6 S	102.7 E	99	82
Saha D	0.1 N	107.5 E	35	64
Saha N	4.1 S	101.5 E	49	82	Possibly Lower Imbrian
Saha W	0.6 S	101.4 E	34	82
Sanford	32.6 N	138.9 W	55	34
Sarton	49.3 N	121.1 W	69	20
Sarton L	47.0 N	120.0 W	48	35	Possibly Lower Imbrian
Schaeberle	26.2 S	117.2 E	62	101
Schjellerup R	68.7 N	152.2 E	54	7	Younger than Humboldtianum Basin
Schlesinger M	45.2 N	138.5 W	45	34	Younger than Hertzsprung Basin
Schliemann	2.1 S	155.2 E	80	85	Younger than Mendeleev Basin
Schliemann A	1.2 N	155.4 E	64	67	Older than Mendeleev Basin
Schliemann B	2.1 N	156.2 E	32	67	Older than Mendeleev Basin
Schneller	41.8 N	163.6 W	54	33	Not on Plate 7B
Schuster	4.2 N	146.5 E	108	66	Younger than Mendeleev Basin
Schwarzschild	70.1 N	121.2 E	212	6	Older than Humboldtianum Basin
Schwarzschild K	67.5 N	125.0 E	45	6	Younger than Humboldtianum Basin
Schwarzschild L	69.3 N	122.1 E	45	6	Lower Imbrian, is named on Plate 8B but shown too far North, should not be on 7B
Scobee	31.1 S	148.9 W	40	106	Formerly Barringer L; possibly pre-Nectarian
Sechenov	7.1 S	142.6 W	62	88
Segers M	44.5 N	127.6 E	54	30	Compound impact, age uncertain
Seyfert	29.1 N	114.6 E	110	47	Younger than Humboldtianum Basin
Seyfert A	30.5 N	114.9 E	53	47	Younger than Humboldtianum Basin
Sharonov X	14.1 N	172.7 E	36	68
Shayn B	34.5 N	173.5 E	35	32	Younger than Moscoviense Basin
Shayn H	31.4 N	175.5 E	38	50
Shi Shen	76.0 N	104.1 E	43	6	Older than Humboldtianum Basin
Shi Shen Q	74.2 N	96.3 E	45	5	Younger than Humboldtianum Basin
Siedentopf	22.0 S	135.5 E	61	48	Younger than Moscoviense Basin
Siedentopf F	22.1 N	138.5 E	42	48	Younger than Moscoviense Basin
Siedentopf G	20.5 N	138.4 E	61	48	Younger than Moscoviense Basin
Siedentopf Q	20.7 N	133.7 E	42	48	Younger than Moscoviense Basin
Sierpinski	27.2 S	154.5 E	69	103
Sikorsky	66.1 S	103.2 E	98	140
Sklodowska A	14.7 S	96.5 E	44	82
Smoluchowski	60.3 N	96.8 W	83	21	Partly covered by Imbrian ejecta
Sniadecki	22.5 S	168.9 W	43	105
Sommerfeld	65.2 N	162.4 W	169	8
Spencer Jones W	15.2 N	163.3 E	50	67
Stebbins U	65.4 N	147.6 W	44	8	Possibly Lower Imbrian: should be shown on Plate 7B, not 8B
Stein	7.2 N	179.0 E	33	68
Steno	32.8 N	161.8 E	31	32	Younger than Moscoviense Basin
Steno T	32.7 N	159.7 E	37	32	Older than Moscoviense Basin
Steno U	33.1 N	158.3 E	27	32	Younger than Moscoviense Basin
Störmer H	54.8N	150.2E	32	17	Younger than Moscoviense Basin
Stratton	5.8 S	164.6 E	70	85
Strömgren	21.7 S	132.4 W	61	106	Older than Hertzsprung Basin
Strömgren A	17.8 S	131.7 W	51	106	Older than Hertzsprung Basin
Strömgren X	17.4 S	134.6 W	42	106	Possibley Lower Imbrian
Sumner	37.5 N	108.7 E	50	30	Older than Humboldtianum Basin, possibly pre-Nectarian
Teisserenc C	33.1 N	134.7 W	47	34	Older than Hertzsprung Basin
ten Bruggencate H	10.0 S	135.6 E	33	84
ten Bruggencate Y	6.7 S	134.0 E	57	84
Tereshkova	28.4 N	144.3 E	31	48	Younger than Moscoviense Basin
Tesla	38.5 N	124.7 E	43	30	Younger than Moscoviense Basin
Timiryazev	5.5 S	147.0 W	53	88	Younger than Hertzsprung Basin
Timiryazev S	6.0 S	149.4 W	53	88	Older than Hertzsprung Basin
Timiryazev W	3.0 S	150.0 W	32	88	Older than Hertzsprung Basin
Titius Q	28.0 S	98.6 E	46	100
Titov	28.6 N	150.5 E	31	49
Trumpler	29.3 N	167.1 E	77	49	Younger than Moscoviense Basin
Trumpler V	29.8 N	164.0 E	36	49	Younger than Moscoviense Basin
Tsander B	9.6 N	147.0 W	55	70	Older than Hertzsprung Basin
Tsander V	7.9 N	153.5 W	37	69	Older than Hertzsprung Basin
Tseraskiy (Cerasky)	49.0 S	141.6 E	56	131
Tseraskiy K (Cerasky K)	53.0 S	144.6 E	45	131
Tseraskiy P (Cerasky P)	51.3 S	139.6 E	33	131
Tsinger (Tzinger)	56.7 N	175.6 E	44	18	Younger than Moscoviense Basin
Valier	6.8 N	174.5 E	67	68	Possibly Lower Imbrian
Van de Graaff	27.4 S	172.2 E	233	104
Van Gent	15.4 N	160.4 E	43	67
van Rhijn	52.6 N	146.4 E	46	17
van't Hoff M	56.8 N	132.1 W	36	20
Vavilov D	0.1 S	137.1 W	102	88	Partly covered by Imbrian ejecta; younger than Hertzsprung Basin: name is on LAC 70
Vening Meinesz	0.3 S	162.6 E	87	85
Vertregt L	21.1 S	171.5 E	38	104
Vesalius	3.1 S	114.5 E	61	83
Vesalius H	3.9 S	119.0 E	36	83
Virtanen Z	16.5 N	176.6 E	31	50
Volkov	13.6 S	131.7 E	40	84	Partly covered by ejecta from Upper Imbrian crater Tsiolkovskiy
Volterra	56.8 N	132.2 E	52	17	Older than Humboldtianum basin, possibly pre-Nectarian
Von der Pahlen	24.8 S	132.7 W	56	106
Wan-Hoo (Van-Gu)	9.8 S	138.8 W	52	88	Older than Hertzsprung Basin
Waterman	25.9 S	128.0 E	76	101	Partly covered by ejecta from Upper Imbrian crater Tsiolkovskiy
Weber	50.4 N	123.4 W	42	20
Wegener	45.2 N	113.3 W	88	35
Wegener K	43.3 N	111.9 W	32	35
Wiechert	84.5 S	165.0 E	41	144
Wiechert P	85.5 S	150.5 E	37	144
Wiener	40.8 N	146.6 E	120	31	Younger than Moscoviense Basin
Wilsing W	18.5 S	159.8 W	36	105	Younger than Korolev Basin, slightly mislocated on Plate 7B
Wilsing Z	20.9 S	155.2 W	30	105	Younger than Hertzsprung Basin
Winkler L	40.0 N	178.4 W	31	33
Winlock	35.6 N	105.6 W	64	36
Wood	43.0 N	120.8 W	78	35	Possibly pre-Nectarian
Yablochkov U	61.9 N	120.8 E	30	16	Younger than Humboldtianum Basin
Zanstra A	4.5 N	125.2 E	36	65	Younger than Mendeleev Basin
Zeeman	75.2 S	133.6 W	190	142
Zhiritskiy (Zhiritsky)	24.8 S	120.3 E	35	101
Zhukovskiy	7.8 N	167.0 W	81	69	Younger than Korolev Basin
Zsigmondy	59.7 N	104.7 W	65	21	Partly covered by Imbrian ejecta
Zsigmondy A	62.8 N	102.6 W	63	21	Partly covered by Imbrian ejecta

Chapter 3. The Imbrian System, Lower Imbrian Series

Table 3.1: Lower Imbrian Series, Nearside, Plate 8A
Feature	Latitude	Longitude	Diam. (km)	LAC	Comments
Alhazen	15.9 N	71.8 E	32	63	Possiblly Nectarian but younger than Crisium Basin
Arzachel	18.2 S	1.9 W	96	95
Auzout	10.3 N	64.1 E	32	62
Babbage A	59.0 N	55.1 W	32	10
Boguslawsky F	75.3 S	52.5 E	30	138
Burckhardt	31.1 N	56.5 E	56	44
Calippus	38.9 N	10.7 E	32	26
Campanus	28.0 S	27.8 W	48	94
Cassini	40.2 N	4.6 E	56	25
Crüger	16.7 S	66.8 W	45	92	Possibly Upper Imbrian
Desargues M	70.2 N	73.3 W	85	2
Egede	48.7 N	10.6 E	37	13
Fontenelle	63.4 N	18.9 W	38	12
Franklin	38.8 N	47.7 E	56	27
Gilbert M				81	Renamed as Van Vleck
Gilbert N				81	Renamed as Weierstrass
Hahn	31.3 N	73.6 E	84	45
Hommel Q	56.1 S	38.4 E	29	127	Mislabeled as Vlacq G on Plate 8A
Inghirami A	44.9 S	65.3 W	34	109
Kapteyn A	14.2 S	71.3 E	31	81
La Condamine	53.4 N	28.2 W	37	11
Lambert F				40	Mislabeled on LAC 40; is Lambert R
Lambert R	23.9 N	20.6 W	55	40	Possibly  Upper Imbrian
Langrenus A	10.7 S	67.2 E	43	80
Letronne	10.8 S	42.5 W	116	75
Lick	12.4 N	52.7 E	31	62
Macrobius	21.3 N	46.0 E	64	43
Marius	11.9 N	50.8 W	41	56	Possibly Upper Imbrian
Maupertuis	49.6 N	27.3 W	45	11
Miller	39.3 S	0.8 E	61	112
Nasireddin	41.0 S	0.2 E	52	112
Petavius	25.1 S	60.4 E	188	98
Prinz	25.5 N	44.1 W	46	39
Sabine	1.4 N	20.1 E	30	60
Schubert C	1.8 N	84.6 E	31	63
Stadius	10.5 N	13.7 W	69	58	Possibly Upper Imbrian
T. Mayer	15.6 N	29.1 W	33	58
T. Mayer W	17.5 N	34.9 W	34	39	Possibly Upper Imbrian
Van Vleck	1.9 S	78.3 E	31	81	Formerly Gilbert M
Vitello	30.4 S	37.5 W	42	93
Vlacq G				127	Mislabeled on Plate 8A; is Hommel Q
Weierstrass	1.3 S	77.2 E	33	81	Formerly Gilbert N
Yerkes	14.6 N	51.7 E	36	62

Table 3.2: Lower Imbrian Series, Farside, Plate 8B
Feature	Latitude	Longitude	Diam. (km)	LAC	Comments
Alder	48.6 S	177.4 W	77	132
Artem’ev	10.8 N	144.4 W	67	70
Bolyai D	32.5 S	128.0 E	34	117	Possibly Nectarian
Borman	38.8 S	147.7 W	50	121
Bragg H	41.7 N	101.0 W	40	36
Brianchon F				9	Mislabeled on Plate 8B: is Brianchon T
Brianchon T	75.8 N	99.8 W	30	9
Brunner	9.9 S	90.9 E	53	82
Chauvenet C	10.4 S	138.0 E	48	84
Compton	55.3 N	103.8 E	162	16
Crocco G	47.8 S	152.3 E	42	118
Ctesibius	0.8 N	118.7 E	36	65
Daedalus	5.9 S	179.4 E	93	86
Dawson	67.4 S	134.7 W	45	142
Doppler	12.6 S	159.6 W	110	87
Dreyer C	11.2 N	98.2 E	37	64	Possibly Nectarian
Ellison	55.1 N	107.5 W	36	21
Engel'gardt (Engelhardt)	5.7 N	159.0 W	43	69
Fányi				123	Mislabeled on Plate 8B: is Fényi
Fényi	44.9 S	105.1 W	38	123
Firsov	4.5 N	112.2 E	51	65	Possibly Nectarian
Fowler C	45.0 N	141.9 W	32	34
Green	4.1 N	132.9 E	65	66
Grigg	12.9 N	129.4 W	36	71
Grissom M	49.1 S	147.7 W	38	133
Gullstrand	45.2 N	129.3 W	43	35
Harkhebi H	39.3 N	99.8 E	30	29	Possibly Nectarian
Heymans	75.3 N	144.1 W	50	8	Probably Nectarian, should be shown on Plate 7B, not 8B
Hilbert E	16.5 S	111.8 E	40	101
Hutton P	35.7 N	167.4 E	42	32
Innes S	27.6 N	117.3 E	33	47
Karpinskiy	73.3 N	166.3 E	92	7
Keeler	10.2 S	161.9 E	160	85
Kidinnu	35.9 N	122.9 E	56	30
Kramers C	55.0 N	125.6 W	60	20	Possibly Upper Imbrian, not on Plate 8B
Kramers U	54.2 N	132.4 W	38	20
Lebedinskiy	8.3 N	164.3 W	62	69
Lebedinskiy K				69	Mislabeled and mislocated on Plate 8B: is Lebedinskiy P
Lebedinskiy P	6.0 N	165.0 W	51	69
Lipskiy V	1.2 S	178.7 E	36	86
Lomonosov	27.3 N	98.0 E	92	46
Marconi	9.6 S	145.1 E	73	84
Mendel J	51.6 S	107.4 W	58	135
Millikan R	46.0 N	117.7 E	49	30
Milne K	32.5 S	113.1 E	65	117
Montgolfier P	46.1 N	160.9 W	36	33
Nijland	33.0 N	134.1 E	35	31
No name	44.2 S	148.1 W	36	121	Between Grissom and Borman M on Plate 8B
No name	44.2 S	146.1 W	36	121	Between Grissom and Borman M on Plate 8B
Nöther (Noether) U	67.6 N	123.4 W	36	9
Oppenheimer U	34.3 S	167.9 W	38	120
Paschen L	16.4 S	139.5 W	38	106
Pauli	44.5 S	137.5 E	84	118
Pavlov G	29.1 S	145.4 E	43	102
Polzunov N	23.7 N	113.8 E	35	47
Racah N	17.0 S	179.0 E	35	104
Roberts M	68.2 N	174.3 W	46	7	Probably Nectarian: should be shown on Plate 7B, not 8B
Rowland Y	59.1 N	163.0 W	54	19	Possibly Nectarian: should be shown on plate 8B, not 7B
Rumford	28.8 S	169.8 W	61	105
Saha J	4.0 S	105.3 E	52	82
Schrödinger	75.0 S	132.4 E	312	140
Schuster R	3.5 N	144.8 E	40	66
Schwarzschild L	69.3 N	122.1 E	45	6	Shown too far North on Plate 8B
Shayn F	33.0 N	175.5 E	38	32
Siedentopf H	20.9 N	137.2 E	42	48
Slipher	49.5 N	160.1 E	69	18
Spencer Jones	13.3 N	165.6 E	85	67
St. John W				66	Mislabeled on Plate 8B: is St. John X
St. John X	13.9 N	147.4 E	30	66
Stebbins U	65.4 N	147.6 W	44	8	Probably Nectarian: should be shown on Plate 7B, not 8B
Thiel	40.7 N	134.5 W	32	34
Van der Waals W	41.3 S	117.1 E	46	117
Van Gent N	13.5 N	160.0 E	32	67
Van Rijn T	52.2 N	140.0 E	35	17	Mislabled as Van Riln T on LAC 17
Van't Hoff N	57.9 N	132.3 W	46	20
Walker W	24.6 S	164.3 W	44	105
Watson G	63.3 S	120.3 W	34	134
Wexler	69.1 S	90.2 E	51	139
Wiener Q	39.5 N	145.0 E	30	31	Possibly Nectarian
Zeeman Y	72.8 S	137.6 W	33	142

Chapter 4. The Imbrian System, Upper Imbrian Series

Table 4.1: Upper Imbrian Series, Nearside, Plate 9A
Feature	Latitude	Longitude	Diam. (km)	LAC	Comments
Abenezra	21.0 S	11.9 E	42	96
Archimedes	29.7 N	4.0 W	82	41
Atlas	46.7 N	44.4 E	87	27
Baade	44.8 S	81.8 W	55	109
Back	1.1 N	80.7 E	35	63	Probably Upper Imbrian, should be shown on Plate 9A
Bernoulli	35.0 N	60.7 E	47	28
Bianchini	48.7 N	34.3 W	38	11
Boss	45.8 N	89.2 E	47	29	Probably Upper Imbrian; possibly Lower Imbrium, should be shown on Plate 9A
Briggs	26.5 N	69.1 W	37	38
C. Mayer	63.2 N	17.3 E	38	13
Cardanus	13.2 N	72.5 W	49	55
Damoiseau	4.8 S	61.1 W	36	74
Dalton	17.1 N	84.3 W	60	37
Davy	11.8 S	8.1 W	34	77
Delambre	1.9 S	17.5 E	51	78
Democritus	62.3 N	35.0 E	39	13
Eichstadt	22.6 S	78.3 W	49	91
Einstein A	16.7 N	88.2 W	51	37
Endymion A	54.7 N	62.8 E	30	14
Endymion C	58.4 N	60.8 E	32	14
Faraday G	45.8 S	10.1 E	31	113
Graff	42.4 S	88.6 W	36	123
Gum S	39.8 S	85.0 E	33	116
Hagecius K	61.2 S	52.0 E	31	128
Hansen	14.0 N	72.5 E	39	63
Hansteen	11.5 S	52.0 W	44	74
Hell	32.4 S	7.8 W	33	112
Henry Fréres	23.5 S	58.9 W	42	92	Formerly Prosper Henry
Hercules A				14	Renamed Keldysh
Herodotus	23.2 N	49.7 W	34	39
Humboldt	27.0 S	80.9 E	189	99
Kant	10.6 S	20.1 E	33	78
Keldysh	51.2 N	43.6 E	33	14	Formerly Hercules A
Kies	26.3 S	22.5 W	45	94
Kopff	17.4 S	89.6 W	41	91
Krafft	16.6 N	72.6 W	51	37
Krasnov	29.9 S	79.6 W	40	91
La Perouse	10.7 S	76.3 E	77	81
Lansberg	0.3 S	26.6 W	38	76
Le Gentil				136	Mislabeled on Plate 9A: is Le Gentil A
Le Gentil A	74.6 S	52.4 W	33	136
Lindenau	32.3 S	24.9 E	53	113
Magelhaens A	12.6 S	45.0 E	32	79
Mairan	41.6 N	43.4 W	40	23
Markov	53.4 N	62.7 W	40	10
Monge	19.2 S	47.6 E	36	97
Neander	31.3 S	39.9 E	50	97
Neumayer M	71.6 S	78.5 E	31	139
Nonius L	33.5 S	3.5 E	31	112
Piccolomini	29.7 S	32.2 E	87	97
Plato	51.6 N	9.4 W	109	12
Pontecoulant J	61.6S	64.3E	39	128
Posidonius	31.8 N	29.9 E	95	42
Prosper Henry				92	Renamed Henry Fréres
Rayleigh A				45	Renamed Urey
Riemann A	37.3 N	86.5 E	48	29
Schlüter	5.9 S	83.3 W	89	73
Schlüter A	9.2 S	82.4 W	37	73
Schomberger	76.7 S	24.9 E	85	138
Schorr	19.5 S	89.7 E	53	99
Seleucus	21.0 N	66.6 W	43	38
Shaler	32.9 S	85.2 W	48	109
Sharp	45.7 N	40.2 W	39	23
Stiborius	34.4 S	32.0 E	43	113
Tacitus	16.2 S	19.0 E	39	96
Thebit	22.0 S	4.0 W	56	95
Timaeus	62.8 N	0.5 W	32	12
Tralles	28.4 N	52.8 E	43	44
Urey	27.9 N	87.4 E	38	45	Formerly Rayleigh A
Vitruvius	17.6 N	31.3 E	29	43
Wilhelm D	41.8 S	17.7 W	32	111
Wrottesley	23.9 S	56.8 E	57	98
Xenophanes A	60.1 N	84.8 W	42	21
Zagut B	32.1 S	18.7 E	32	113

Table 4.2: Upper Imbrian Series, Farside, Plate 9B
Feature	Latitude	Longitude	Diam. (km)	LAC	Comments
Aitken	16.8 S	173.4 E	135	104
Aitken Z	15.1 S	173.3 E	33	86
Antoniadi	69.7 S	172.0 W	143	141
Bjerknes	38.4 S	113.0 E	48	117
Blazhko	31.6 N	148.0 W	54	52
Butlerov	12.5 N	108.7 W	40	72
Cantor	38.2 N	118.6 E	81	30
Carnot F	52.5 N	138.9 W	35	20	Possibly Lower Imbrian
Carver L	45.2 S	127.8 E	33	117
Chant	40.0 S	109.2 W	33	123
Coulomb N	50.6 N	115.8 W	32	20	Possibly Eratosthenian but should be shown on Plate 9b, not 10B
D’Alembert Z	55.4 N	165.6 E	44	18
Dante	25.5 N	180.0 E	54	50	Possibly Lower Imbrian
De Forest	77.3 S	162.1 W	57	142
De Roy X	52.7 S	101.3 W	30	135
De Vries	19.9 S	176.7 W	59	104	Possibly Lower Imbrian
Delporte	16.0 S	121.6 E	45	101	Possibly Lower Imbrian
Dirichlet	11.1 N	151.4 W	47	69	Possibly Lower Imbrian
Doerfel	69.1 S	107.9 W	68	143	Possibly Lower Imbrian
Doerfel  S	69.9 S	119.6 W	32	143
Dryden	33.0 S	155.2 W	51	121
Drygalski P	81.0 S	99.9 W	30	144	Possibly Lower Imbrian
Fizeau	58.6 S	133.9 W	111	134	Possibly Lower Imbrian
Fridman (Friedmann)	12.6 S	126.0W		89	Pre-Nectarian: should be shown on Plate 6B, not 9B
Gamow U	66.7 N	137.0 E	39	6
Geiger	14.6 S	158.5 E	34	85	Possibly Lower Imbrian
Gerasimovich R	24.1 S	125.9 W	55	107
Ginzel H	12.7 N	100.1 E	50	64
Glazenap	1.6 S	137.6 E	43	84
Golitsyn	25.1 S	105.0 W	36	108
Golovin	39.9 N	161.1 E	37	32
Grachev	3.7 S	108.2 W	35	90	Possibly Eratosthenian but should be shown on Plate 9B, not 10B
Hale	74.2 S	90.8 E	83	139
Hertzsprung V	5.2 N	133.3 W	39	70	Possibly Lower Imbrian
Holetscheck	27.6 S	150.9 E	38	103
Ioffe	14.4 S	129.2 W	86	89	Erroneously labeled Friedmann on Plate 9B; misspelled "Loffe" on LAC 89
Jenner	42.1 S	95.9 E	71	116
Joule T	27.7 N	148.2 W	37	52
Katchalsky	5.9 N	116.1 E	32	65
Korolev F	4.6 S	152.6 W	31	87	Possibly Lower Imbrian
Kovalevskaya	30.8 N	129.6 W	115	53
Krasovskiy	3.9 N	175.5 W	59	68
Kuo Shou Ching	8.4 N	133.7 W	34	70
Lacchini	41.7 N	107.5 W	58	36
Lane	9.5 S	132.0 E	55	84
Langemak	10.3 S	118.7 E	97	83
Larmor Z	33.7 N	179.8 W	49	33
Lindblad F	70.6 N	94.3 W	42	9	Possibly Lower Imbrian
Lobachevskiy	9.9 N	112.6 E	84	65
Lovelace	82.3 N	106.4 W	54	1
Lowell	12.9 S	103.1 W	66	90
Lucretius	8.2 S	120.8 W	63	89
Lundmark G	40.5 S	155.5 E	35	119
Lyman	64.8 S	163.6 E	84	141
Maksutov	40.5 S	168.7 W	83	120
Mandel’shtam R	4.5 N	159.8 E	57	67
Mariotte	28.5 S	139.1 W	65	106	Unusual compound feature
McLaughlin U	47.1 N	92.9 W	79	36
Mendeleev  Q				66	Mislabeled on Plaate 9B: is Schuster Q
Montgolfier Y	50.5 N	161.3 W	40	19	Possibly Lower Imbrian
Nikolaev	35.2 N	151.3 E	41	31	Possibly Lower Imbrian
Nušl	32.3 N	167.6 E	61	32
Oresme V	40.5 S	165.6 E	51	119
Pease	12.5 N	106.1 W	38	72
Perrine T	42.4 N	130.2 W	34	35
Pikel'ner	47.9 S	123.3 E	47	117
Plaskett	82.1 N	174.3 E	109	1
Plummer M	26.8 S	154.9 W	41	105	Possibly Lower Imbrian
Saenger P	2.7 N	101.7 E	41	64
Scaliger	27.1 S	108.9 E	84	100
Schjellerup	69.7 N	157.1 E	62	7
Schuster Q	1.0 N	143.4 E	45	66	Possibly Lower Imbrian
Siedentopf  M	19.0 N	135.5 E	31	48
Sklowdowska	18.2 S	95.5 E	127	100
Smoluchowski H	59.5 N	92.7 W	41	21	Possibly Eratosthenian
Stebbins C	67.7 N	133.6 W	39	8
Steklov	36.7 S	104.9 W	36	123
Stetson E	39.4 S	117.0 W	38	122
Störmer	57.3 N	146.3 E	69	17
Tiselius	7.0 N	176.5 E	53	68
Tsiolkovskiy	21.2 S	128.9 E	185	101
Van’t Hoff F	61.5 N	126.2 W	41	20
Vashakidze	43.6 N	93.3 E	44	29	Possibly Lower Imbrian
Vening Meinesz W	1.5 N	161.0 E	39	67	Possibly Lower Imbrian
Vesalius M	5.7 S	114.5 E	31	83
Vetchinkin F	10.0 N	134.0 E	30	66	Possibly Lower Imbrian
Von Neumann	40.4 N	153.2 E	78	31
White	44.6 S	158.3 W	39	120
Woltjer	45.2 N	159.6 W	46	33	Possibly Lower Imbrian
Zelinskiy	28.9 S	166.8 E	53	103
Zhukovskiy W	9.8 N	170.3 W	31	68	Possibly Lower Imbrian; not labled on LACs

Chapter 5. The Eratosthenian System

There have been several revisons of strata assignments between the Eratosthenian and Copernican systems, especially for farside craters. In some cases, other systems are involved. There are three reasons for this: new understanding of the maturity of rays, the lower resolution of currently available farside photography, and correction of the original maps. The new assignments are characterized as unambiguous, probable and possible.

If a crater appears on the Eratosthenian maps, it is entered on the table corresponding to its location. If it has been reassigned as probably or unambiguously in another strata the comment indicates the plate where it should appear and it also is entered on the corresponding table. An entry is made in the tables of this chapter when a crater has been reassigned to the Eratosthenian System as probable or unambiguous.

If a crater is deemed just possibly to belong to another strata, no entry is made there unless it has appeared in the corresponding plate.

Table 5.1: Eratosthenian System, Nearside, Plate 10A
Feature	Latitude	Longitude	Diam. (km)	LAC	Comments
Agrippa	4.1 N	10.5 E	44	60
Aristoteles	50.2 N	17.4 E	87	13
Balboa A	17.4 N	81.9 W	47	37
Bullialdus	20.7 S	22.2 W	60	94
Cavalerius	5.1 N	66.8 W	57	56
Cepheus	40.8 N	45.8 E	39	27
Cichus	33.3 S	21.1 W	40	111
Delmotte	27.1 N	60.2 E	32	44
Eratosthenes	14.5 N	11.3 W	58	58
Fabricius	42.9 S	42.0 E	78	114
Geminus	34.5 N	56.7 E	85	27
Hainzel A	40.3 S	33.9 W	53	111
Hamilton	42.8 S	84.7 E	57	116
Hausen	65.0 S	88.1 W	167	143
Hayn E	67.1 N	66.4 E	42	5
Helmholtz D	66.3 S	54.3 E	46	138
Hercules	46.7 N	39.1 E	69	27
Herschel	5.7 S	2.1 W	40	77
Hommel B	55.3 S	37.0 E	33	127
Lambert	25.8 N	21.0 W	30	40
Langrenus	8.9 S	61.1 E	127	80
Lexell				112	Mislabeled on Plate 10A: is Lexell A
Lexell A	36.9 S	1.4 W	34	112
Manilius	14.5 N	9.1 E	38	59
Moretus	70.6 S	5.8 W	111	137
Newcomb	29.9 N	43.8 E	41	43
Nicholson	26.2 S	85.1 W	38	91
Pettit	27.5 S	86.6 W	35	91	Mislabeled as Petit on Plate 10A
Plinius	15.4 N	23.7 E	43	60
Plutarch	24.1 N	79.0 E	68	45
Pythagoras	63.5 N	63.0 W	142	10
Reichenbach A	28.3 S	49.0 E	34	97
Reiner	7.0 N	54.9 W	29	56
Reinhold	3.3 N	22.8 W	42	58
Rothmann	30.8 S	27.7 E	42	96
Scoresby	77.7 N	14.1 E	55	4
Sirsalis	12.5 S	60.4 W	42	74
Theophilus	11.4 S	26.4 E	110	78
Timocharis	13.1 S	13.1 W	33	40
Werner	28.0 S	3.3 E	70	95
Wright	31.6 S	86.6 W	39	91
Zeno B	44.0 N	71.0 E	37	28

Table 5.2: Eratosthenian System, Farside, Plate 10B.
Feature	Latitude	Longitude	Diam. (km)	LAC	Comments
Amici T	9.7 S	174.0 W	43	86	Possibly Upper or Lower Imbrian
Birkeland	30.2 S	173.9 E	82	104
Bok	20.2 S	171.6 W	45	104
Chebeyshev U	33.3 S	137.0 W	36	121
Coriolis Y	3.6 N	171.2 E	31	68	Probably Eratosthenian, possibly Copernican; should be shown on Plate 10B, not 11B
Coulomb N	50.6 N	115.8 W	32	20	Probably Upper Imbrian, possibly Eratosthenian, should be shown on Plate 9b, not 10B
Dante E	26.7 N	177.0 W	43	50
Doppler B	11.8 S	159.4 W	37	87	Not labled on LAC 87
Ellerman	25.3 S	120.1 W	47	107
Finsen	42.0 S	177.9 W	72	120
Foster P	20.2 N	143.5 W	36	52	Possibly Upper Imbrian
Grachev	3.7 S	108.2 W	35	90	Probably Upper Imbrian, should be shown on Plate 9B, not 10B
Grotrian	66.5 S	128.3 E	37	140
Harriot W	35.0 N	111.7 E	39	30	Possibly Upper Imbrian
Holetschek Z	26.3 S	150.9 E	30	103
Innes	27.8 N	119.2 E	42	47
Izsak	23.3 S	117.1 E	30	101	Misspelled Iszak on Plate 10B
Jules Verne G	35.1 S	150.0 E	42	118	Possibly Upper Imbrian
Kirkwood	68.8 N	156.1 W	67	8
Klute W	38.2 N	143.0 W	31	34	Possibly Copernican
Korolev W	0.4 S	160.3 W	34	87	Possibly Upper Imbrian
Leuschner	1.8 N	108.8 W	49	72
Lovell	36.8 S	141.9 W	34	121	Possibly Upper Imbrian
Maunder	14.6 S	93.8 W	55	90
Moiseev	9.5 N	103.3 E	59	64
Morse	22.1 N	175.1 W	77	50
Ohm	18.4 N	113.5 W	64	53	Copernican; should be shown on Plate 11B, not 10B
Olcott	20.6 N	117.8 E	81	47
Oppenheimer V	32.0 S	172.7 W	32	104	Possibly Upper Imbrian
Pasteur D	8.8 S	108.8 E	36	82	Probably Eratosthenian. possibly Copernican; should be shown on Plate 10B, not 11B
Petrie	45.3 N	108.4 E	33	30
Perrine E	42.8 N	124.9 W	40	35	Probably Eratosthenian, possibly Copernican or Upper Imbrian; should be shown on Plate 10B, not 11B
Planté	10.2 S	163.3 E	37	85
Pogson F	42.0 S	114.6 E	35	117
Ricco	75.6 N	176.3 E	65	7
Robertson	21.8 N	105.2 W	88	54	Should be shown on Plate 10B, not 11B
Rowland J	53.1 N	155.5 W	49	19
Rozhdestvenskiy K	82.7 N	144.6 W	42	1
Rydberg	46.5 S	96.3 W	49	123
Sharonov	12.4 N	173.3 E	74	68	Probably Eratosthenian, possibly Upper Imbrian; should be shown on Plate 10B, not 11B
Shirakatsi	12.1 S	128.6 E	51	83
Stearns	34.8 N	162.6 E	36	32
Van Gent X	16.4 N	159.7 E	38	49
Virtanen	15.5 N	176.7 E	44	68	Copernican; should be shown on Plate 11B, not 10B
Von der Pahlen H	27.1 S	127.5 W	35	107
Wiechert J	85.6 S	177.0 W	34	144
Wilsing C	19.0 S	153.0 W	33	105
Zhukovskiy Z	10.0 N	166.8 W	34	69

Chapter 6. The Copernican System

As mentioned in the introductory note for Chapter 5, there have been some revised assignments between the Copernican and other systems. The same conventions have been used in the Comments column to reflect these changes.

Table 6.1: Copernican System, Nearside, Plate 11A
Feature	Latitude	Longitude	Diam.(km)	LAC	Comments
Anaxagoras	73.4 N	10.1 W	50	3
Aristarchus	23.7 N	47.4 W	40	39
Aristilllus	33.9 N	1.2 E	55	25
Autolycus	30.7 N	1.5 E	39	41
Bürg	45 N	28.2 E	39	26
Carpenter	69.4 N	50.9 W	59	2
Copernicus	9.7 N	20.1 W	93	58
Eudoxus	44.3 N	16.3 E	67	26
Faraday C	43.3 S	8.1 E	30	112
Gassendi A	15.5 S	39.7 W	33	75
Glushko	8.4 N	77.6 W	43	55	Formerly Olbers A
Godin	1.8 N	10.2 E	34	60
Harpalus	52.6 N	43.4 W	39	11
Hayn	64.7 N	85.2 E	87	5
Kepler	8.1 N	38.0 W	31	57
Olbers A				55	Renamed Glushko
Palitzsch B	26.4 S	68.4 E	39	98
Petavius B	19.9 S	57.1 E	33	98
Philolaus	72.1 N	32.4 W	70	3
Römer	25.4 N	36.4 E	39	43
Rutherford	60.9 S	12.1 W	48	126
Schomberger A	78.8 S	24.4 E	31	138
Stevinus	32.5 S	54.2 E	74	114
Taruntius	5.6 N	46.5 E	56	61
Thales	61.8 N	50.3 E	31	14
Tycho	43.4 S	11.1 W	102	112
Zucchius	61.4 S	50.3 W	64	124

Table 6.2: Copernican System, Farside, Plate 11B
Feature	Latitude	Longitude	Diam. (km)	LAC	Comments
Bel’kovich K	63.8 N	93.6 E	47	15
Birkhoff Z	61.3 N	145.3 W	30	19
Coriolis Y	3.6 N	171.2 E	31	68	Probably Eratosthenian, possibly Copernican; should be shown on Plate 10B, not 11B
Crookes	10.3 S	164.5 W	49	87
Das	26.6 S	136.8 W	38	106
Guthnick	47.7 S	93.9 W	36	123
Hartmann	3.2 N	135.3 E	61	66	Nectarian, possibly Lower Imbrian; should be shown on Plate 7B, not 11B
Jackson	22.4 N	163.1 W	71	51
King	5.0 N	120.5 E	76	65
Milne N	35.5 S	110.8 E	37	117
Necho	5.0 S	123.1 E	30	83
O’Day	30.6 S	157.5 E	71	103	Possibly Eratosthenian
Ohm	18.4 N	113.5 W	64	53	Should be shown on Plate 11B, not 10B
Pasteur D	8.8 S	108.8 E	36	82	Probably Eratosthenian, possibly Copernican; should be shown on Plate 10B, not 11B
Perrine E	42.8N	124.9 W	40	35	Probably Eratosthenian or possibly Upper Imbrian, should be shown on Plate 10B, not 11B
Robertson	21.8 N	105.2 W	88	54	Eratosthenian, should be shown on Plate 10B, not 11B
Sharonov	12.4 N	173.3 E	74	68	Eratosthenian or possibly Upper Imbrian, should be shown on Plate 10B, not 11B
Vavilov	0.8 S	137.9 W	98	88
Virtanen	15.5 N	176.7 E	44	68	Should be shown on Plate 11B, not 10B
Von Neumann F				31	Mislabeled on Plate 11B: is part of Wiener F
Wiener F	41.2 N	150.0 E	47	31

Chapter 7: Revised Strata Assigments

Feature	Former Stratum	Revised Stratum
Baco	Pre-Nectarian	Nectarian
Balboa	Pre-Nectarian	Nectarian
Barbier	Pre-Nectarian	Nectarian
Brouwer	Nectarian	Pre-Nectarian
Coriolis Y	Copernican	Eratosthenian
Coulomb N	Eratosthenian	Upper Imbrian
Fridman (Friedmann)	Upper Imbrian	Pre-Nectarian
Grachev	Eratosthenian	Upper Imbrian
Hartmann	Copernican	Nectarian
Heymans	Lower Imbrian	Nectarian
Ohm	Eratosthenian	Copernican
Pasteur D	Copernican	Eratosthenian
Perrine E	Copernican	Eratosthenian
Roberts M	Lower Imbrian	Nectarian
Robertson	Copernican	Eratosthenian
Rowland Y	Nectarian	Lower Imbrian
Schorr A	Nectarian	Pre-Nectarian
Schwarzschild L	Lower Imbrian, Nectarian	Lower Imbrian only
Sharanov	Copernican	Eratosthenian
Stebbins U	Lower Imbrian	Nectarian
Virtanen	Eratosthenian	Copernican