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Communications of the LUNAR and PLANETARY LABORATORY

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Communications of the LUNAR and PLANETARY LABORATORY Communications of the LUNAR AND PLANETARY LABORATORY Number 70 Volume 5 Part 1 THE UNIVERSITY OF ARIZONA 1966 Communications of the Lunar and Planetary Laboratory These Communications contain the shorter publications and reports by the staff of the Lunar and Planetary Laboratory. They may be either original contributions, reprints of articles published in professional journals, preliminary reports, or announcements. Tabular material too bulky or specialized for regular journals is included if future use of such material appears to warrant it. The Communications are issued as separate numbers, but they are paged and indexed by volumes. The Communications are mailed to observatories and to laboratories known to be engaged in planetary, interplanetary or geophysical research in exchange for their reports and publica- tions. The University of Arizona Press can supply at cost copies to other libraries and interested persons. The University of Arizona GERARD P. KUIPER, Director Tucson, Arizona Lunar and Planetary Laboratory Published with the support of the National Aeronautics and Space Administration Library of Congress Catalog Number 62-63619 NO. 70 THE SYSTEM OF LUNAR CRATERS, QUADRANT IV by D. W. G. ARTHUR, RUTH H. PELLICORI, AND C. A. WOOD May25,1966 , ABSTRACT The designation, diameter, position, central peak information, and state of completeness are listed for each discernible crater with a diameter exceeding 3.5 km in the fourth lunar quadrant. The catalog contains about 8,000 items and is illustrated by a map in 11 sections. hiS Communication is the fourth and final part of listed in the catalog nor shown in the accompanying e System of Lunar Craters, which is a_calalag maps. The details for these are: of all craters on the visible hemisphere recognizable Long. Lat. Diam. (.O01r) with reasonable certainty on photographs and having Amundsen 93.°0 E 84°.0 S 55 diameters greater than 3.5 km. The three previous Jeans 94?0 E 57.°0 S 50 parts were published as Comm. LPL Nos. 30, 40, and 50. The compilation of this catalog started in 1962. The ensuing changes in personnel, increased experi- Following the practice of the earlier parts, names ence, and the very definite improvement in lunar have been given to large or conspicuous craters in photography in the period 1962-1966 resulted in the limb regions wherever such additions were con- the work being somewhat inhomogeneous, with sidered necessary. These new names have already Quadrant IV superior to Quadrant I in quality and been approved by the International Astronomical completeness. It appears that a certain amount of Union in its Twelfth General Assembly, Hamburg, 1964. inhomogeneity is inevitable in a survey that aims at The new names for Quadrant IV are: completeness. The scope of the work can be appre- ciated from the figures: The complete catalog lists Abel Norwegian mathematician the diameters, approximate positions, backgrounds, Balmer Swiss physicist central peak data, and state of completeness for Barnard American astronomer about 17,000 craters. The accompanying maps are Gibbs American physicist entirely schematic, yet in most respects they are Gilbert American geologist probably more complete and more accurate than the Gill British astronomer great chart of Julius Schmidt. Hale American astronomer Acknowledgments. The senior author's role in Hamilton Irish mathematician Dutch astronomer the preparation of this work was limited to planning Kapteyn and occasional decisions in cases of doubt. It is Lam6 French mathematician appropriate to record here his thanks to the co- Lyot French astronomer authors who really did the work, which must have Scott British polar explorer seemed both tedious and endless. Dr. G. P. Kuiper Amundsen Norwegian polar explorer must also be thanked for his interest and support Jeans British physicist throughout. The work reported here was supported The craters Amundsen and Jeans are thought to by the National Aeronautics and Space Administra- be just beyond the mean limb and hence are not tion under Grant No. NsG 161-61. Ref. B & M Designation D K C B C.E. 40OO5 +.002 -.054 +.999 +0.I -3.1 2.02 3.51 2 C 0 40005A .003 .055 .998 0.2 3.2 2.32 4.03 2 C 0 40005B .008 .056 .998 0.5 3.2 2.62 4.55 3 C 0 3.96 6.88 40006 3639A R_aumar C .004 .061 .998 0.2 3.5 2.90 5.04 1 C 0 40006A .000 .063 .998 0.0 3.6 3.25 5.65 4 C 0 40006B .007 .063 .998 0.4 3.6 3.74 6.50 3 C 0 40007 3640 Rdaumur A .004 .075 .997 0.2 4.3 8.46 14.70 2f C 0 9.89 17.19 40009 2952 Gyld_n .005 .093 .996 0.3 5.3 27.20 47.28 4 C 0 40012 Rdatmmr Y .010 .023 1.000 0.6 1.3 1.88 3.27 1 pH 0 40014 3639 Rdaum_r .013 .042 .999 0.7 2.4 30.36 52.77 4f aMC 0 40015 .010 .054 .998 0.6 3.1 4.56 7.93 4f aMC 0 40015A .012 .059 .998 0.7 3.4 4.82 8.38 4 C 0 40015B .016 .057 .998 0.9 3.3 4.15 7.21 4f C 0 40016 Rdammlr K .018 .066 .998 1.0 3.8 3.99 6.94 3 C 0 40017 3641 Rdaumar B .015 .074 .997 0.9 4.2 2.67 4.64 I C 0 40017A .016 .070 .997 0.9 4.0 4.11 7.14 3 C 0 40018 .013 .087 .996 0.7 5.0 10.43 18.13 4f C 0 40019 Gylddn K .011 .095 .995 0.6 5.5 2.78 4.83 2 C 0 40025 .020 .056 .998 1.1 3.2 4.68 8.13 3 C 0 40027 .020 .070 .997 1.1 4.2 7.60 13.21 5f c 0 9.53 16.56 40027A .020 .078 .997 1.1 4.5 2.80 4.87 3 C 0 40027B .023 .079 .997 1.3 4.5 2.62 4.55 3 C 0 40033 Seel£ger S .038 .037 .999 2.2 2.1 2.00 3.48 1 pt¢ 0 40035 .031 .059 .998 1.8 3.4 3.68 6.40 3 C 0 40036 Rda,_,r R .037 .062 .997 2.1 3.6 7.86 13.66 3f C 0 40036A .036 .066 .997 2.1 3.8 2.75 4.78 2 C 0 40036B .031 .066 .997 1.8 3.8 2.20 3.82 1 C 0 40036C .031 .067 .997 1.8 3.8 2.80 4.87 2 C 0 40037 3608A Htpparchus D .037 .078 .996 2.1 4.5 2.66 4.62 1 C 0 40037A 3608B Hipparchus E .040 .074 .996 2.3 4.2 3.11 5.41 1 C 0 40039 .030 .090 .995 1.7 5.2 2.27 3.95 3 C 0 40039A .030 .093 .995 1.7 5.3 3.74 6.50 3 C 0 40040 3639B R_atumr D .049 .004 .999 2.8 0.2 2.42 4.21 1 pHC 0 40042 .046 .022 .999 2.6 1.3 9.63 16.74 4f aMC 0 40045 R_aumur W .049 .056 .997 2.8 3.2 1.64 2.85 1 pMC 0 40045A .049 .058 .997 2.8 3.3 2.07 3.60 3 p_C 0 40046 .045 .065 .997 2.6 3.7 2.95 5.13 3 C 0 40046A .049 .064 .997 2.8 3.7 3.48 6.05 4f aMC 0 4.94 8.59 40046B .042 .068 .997 2.4 3.9 5.52 9.59 3f C 0 7.87 13.68 40047 3608 Htpparchus F .043 .073 .996 2.5 4.2 5.62 9.77 1 C 0 40048 3608D Htpparchus P .048 .082 .995 2.8 4.7 2.99 5.20 1 C 0 40049 3608C Hipparchus H .040 .095 .995 2.3 5.5 2.63 4.57 1 C 0 40049A .048 .094 .994 2.8 5.4 3.40 5.91 3 C ? 2 Ref. B & M Designation D K C B C.E. 40050 +.051 -.007 +.999 +2.9 -0.4 2.30 4.00 I pMC 0 40050A .054 .002 .999 3.1 0.I 7.08 12.31 4f C O 40051 Rhaeticus J .056 .012 .998 3.2 0.7 2.03 3.53 I C 0 40053 3610 Seeliger .053 .038 .998 3.0 2.2 4.90 8.52 I pMC 0 40053A 3610A Seeliger A .054 .032 .998 3.1 1.8 2.25 3.91 I pMC 0 40056 .057 .065 .996 3.3 3.7 8.94 15.54 4 C p? 40066 .068 .068 .995 3.9 3.9 12.80 22.25 5f C O 40068 .067 .083 .994 3.9 4.8 15.25 26.51 5f C O 40069 .066 .092 .994 3.8 5.3 7.83 13.61 5f C O 40072 .077 .022 .997 4.4 1.3 3.86 6.71 3 C p 40073 Seeliger T .076 .039 .996 4.4 2.2 2.23 3.88 i C 0 40073A .077 .030 .997 4.4 1.7 4.70 8.17 3 C O 40074 .077 .043 .996 4.4 2.5 6.91 12.01 5 aMC 0 40076 .070 .060 .996 4.0 3.4 8.97 15.59 5f C O 40076A .076 .063 .995 4.4 3.6 2.02 3.51 3 C O 40076B .078 .063 .995 4.5 3.6 2.31 4.02 3 C O 40083 .080 .035 .996 4.6 2.0 9.70 16.86 4f C 0 40083A .087 .030 .996 5.0 1.7 8.06 14.01 4 C 0 40083B .089 .033 .995 5.1 1.9 2.43 4.22 3 C 0 40084 .081 .048 .996 4.7 2.8 13.27 23.07 4f C 0 40084A .084 .045 .995 4.8 2.6 4.41 7.67 2 C p? 40084B .085 .041 .996 4.9 2.3 2.24 3.89 3 C 0 40085 Horrocks U .083 .056 .995 4.8 3.2 2.20 3.82 I C O 40088 3616 Hlpparchus N .087 .084 .993 5.0 4.8 3.64 6.33 i C O 40089 3605 Hipparchus .084 .096 .992 4.8 5.5 86.59 150.51 4 C pp 40089A .088 .097 .991 5.1 5.6 4.70 8.17 5f C O 40091 Rhaeticus H .094 .018 .995 5.4 1.0 3.27 5.68 2 C O 40100 .006 .106 .994 0.3 6.1 3.98 6.92 3 C O 40101 .002 .117 .993 0.i 6.7 2.66 4.62 2 C 0 40101A .003 .IIi .994 0.2 6.4 2.17 3.77 3 C O 40102 2969 Ptolemaeus G .002 .124 .992 0.I 7.1 6.09 10.59 3 C 0 5.01 8.71 40102A .009 .128 .992 0.5 7.4 2.76 4.80 2 C O 40103 2970H Ptolemaeus T .000 .130 .992 0.0 7.5 3.98 6.92 3 C O 40105 Ptolemaeus YA .003 .155 .988 0.2 8.9 1.45 2.52 I C 0 40106 Ptolemaeus YB .001 .161 .987 0.I 9.3 1.27 2.21 i C O 40108 29701 Ptolemaeus U .002 .181 .983 0.i 10.4 2.13 3.70 3 C O 40108A Ptolemaeus V .008 .183 .983 0.5 10.5 3.01 5.23 2 C O 40109 2970K Ptolemaeus X .006 .191 .982 0.4 Ii.0 4.04 7.02 2 C 0 40110 3642 Gyld4n C .018 .103 .995 1.0 5.9 3.69 6.41 i C O 40110A .010 .107 .994 0.6 6.1 4.19 7.28 4 C 0 40111 .011 .ii0 .994 0.6 6.3 2.04 3.55 I C O 40111A .018 .ii0 .994 1.0 6.3 7.78 13.52 4 C O 14.56 25.31 40113 .010 .135 .991 0.6 7.8 2.07 3.60 i C 0 3 Ref.
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