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,
|
30
|
Chapter 4
|
The Imbrian System,
|
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
|
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 |
|
3.84-3.8 aeons |
|
9 |
4 |
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
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.
|
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 |
|
|
|
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 |
|
|
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 |
|
|
|
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 |
|
|
|
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 |
|