GPO PRICE $ CFSTI PRICE(S) $ Hard copy (HC) Microfiche (MF) ff 653 ,July 85 Communications of the LUNAR AND PLANETARY LABORATORY Volume 3 Number 50 THE UNIVERSITY OF ARIZONA !965 at 4k 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 GE_RD 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. 50 THE SYSTEM OF LUNAR CRATERS, QUADRANT III by D. W. G. ARTHUR, ALICE P. AGNIERAY, RUTH H. PELLICORI, C. A. WOOD, AND T. WELLER February 25, 1965 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 third lunar quadrant. The catalog contains about 5200 items and is illustrated by a map in I1 sections. his Communication is the third part of The Sys- on the averted lunar hemisphere, and therefore, these tem oJ Lunar Craters, which is a catalog in four are not listed in the catalog. parts of all craters recognizable with reasonable Th,_ ...... _,_t positions _nn diameters for certainty on photographs and having a diameter these craters are: greater than 3.5 km. It is thus a continuation of the Long. Lat. Diam. (.O01r) work in Comm. LPL Nos. 30 and 40, and the same Hausen -9175 -65?6 99.5 conventions and format are used. Boltzmann -96?0 -75?5 39.1 As in the earlier parts, it was found necessary Stefan -94?0 -72?0 78.0 to add names for large craters in the extreme limb regions. The new crater names for Quadrant III are: The above are mere additions to the Blagg and MOiler scheme. A more notable innovation, which Baade German-American astronomer has already been authorized by the International Boltzmann Austrian physicist Astronomical Union at its 1964 general meeting at Drygalski German geographer Hamburg, is the addition of the name Mare Cogni- Hartwig German selenodetist turn (the known sea) for the dark area between Krasnov Russian selenodetic observer Riphaeus and the crater Guerike. This name com- Lamarck French naturalist memorates the first successful close-up photography Shaler American selenologist of the lunar surface, achieved by the American Schliiter German selenodetic observer Ranger VII vehicle on 31 July 1964. The vehicle Stefan Austrian physicist impacted in a region for which the existing mare Wright American a_tropomer nomenc'latHre w_ nmhlaltnt_c _ineo tho nld_'r m_nc did not indicate whether two coalescent small maria The name Drygalski was not originated by us fell within the boundaries of Mare Nubium or but is due to Fauth, who used it in his lunar maps. Oceanus Procellarum. The addition of this new It has achieved fairly wide acceptance among ob- name is therefore fortunate for the cartography as servers and is therefore retained here. It appears it eliminates the ambiguity in this region. The new that the craters Hausen, Boltzmann, and Stefan lie name covers both these small maria. 61 ¢ 62 THE SYSTEM OF LUNA R CRATERS, QUADRANT III Early in the interpretation, another mare with Orientale. It should be noted that the designations strong concentric features was found immediately Mare Parvum and Mare Hiemis, also due to Franz, south of the crater Schiller (Hartmann and Kuiper, have already been deleted in the Photographic 1962). This object also deserves a name, but for the Lunar Atlas (Kuiper, et al., 1960) and in the Recti- present we have left it anonymous. fied Lunar Atlas (Whitaker, et al., 1963)• The crowded nature of much of Quadrant II! The nomenclature of The System of Lunar Crat- made it difficult to indicate designations unambigu- ers was submitted to Commission 16 of the Inter- ously on the map. However, by means of arrows and national Astronomical Union at its Twelfth General the other conventions listed in the text of Comm. Meeting in Hamburg, July, 1964. It is with pleasure LPL Nos. 30 and 40, we have done our best to make that we record that our proposals for a revision of the nomenclature clear• Strict attention should be Blagg and Miiller scheme were approved so that the given to these conventions when reading the map scheme of names and letters of The System o/Lunar if errors of identification are to be avoided• Craters is also the scheme authorized by the Union. It is now known (Hartmann and Kuiper, 1962) Acknowledgments• The work reported here was that Mare Orientale (named by Franz) has a supported by the National Aeronautics and Space strongly concentric structure, being bounded by Administration under Grant No. NsG 161-61. parallel scarps. This clarification of the topography has some implications for the nomenclature• Both REFERENCES the names Montes Rook and Montes Cordillera Arthur, D. W. G., Agnieray, A. P., Horvath, R. A., are to be retained as applying to separate but parallel Wood, C. A., and Chapman C. R. 1963, Comm. mountain ranges, which are often confused due to LPL, 2, no. 30. the effects of libration and foreshortening. They are, • 1964, Ibid., 3, no. 40. however, quite separate features with considerable Hartmann, W. K. and Kuiper, G. P. 1962, Comm. distance between them as measured along the lunar LPL, 1, no. 12, pp. 55-57 and 59. surface• -Kuiper, G. P., Arthur, D. W. G., and Whitaker, The same new knowledge leads to the deletion E. A. 1960, Photographic Lunar Atlas (Chi- of the Franz names Mare Aestatis, Mare Veris, and cago: University of Chicago Press)• Mare Autumni. These represent small patches of Whitaker, E. A., Kuiper, G. P., Hartmann, W. K., dark material not worthy of separate names, and and Spradley, H. L. 1963, Rectified Lunar Atlas two of them fall within the scarps bounding Mare (Tucson: University of Arizona Press). P THE CATALOG Ref• B&M Designation D K C B CE 30000 2951A Oppolzer A -. 006 -. 008 +i.000 -0.3 -0.5 i .95 3.39 I pM 0 30002 2951 Oppolzer •008 •027 i .000 0.5 i .5 24.66 42.86 4f aMC 0 30003 Oppolzer K •006 •030 1.000 0.3 1.7 1.74 3.02 I pM 0 30003A .006 •038 .999 0.3 2.2 2.55 4.43 3 C 0 30004 •009 .044 .999 0.5 2.5 2.78 4.83 2 C 0 30006 •008 •061 .998 0.5 3.5 6.79 11.80 5 C 0 30007 •003 .077 .997 0.2 4.4 2•15 3.74 2 C 0 30007A •007 .071 .997 0.4 4.1 3.24 5.63 4 C 0 30013 .015 •037 .999 0•9 2.1 2.25 3.91 3 C 0 30013A •018 •034 .999 1.0 1.9 2.84 4.94 4 aMC 0 30015 R_aumur X .011 .051 .999 0.6 2.9 2.76 4.80 I C 0 30015A .012 •057 .998 0.7 3.3 3.91 6.80 5 C 0 30016 .013 • 061 .998 0.7 3 •5 23.67 41.14 5 C 0 30019 2953 Herschel N .019 .091 .996 i.I 5.2 8.87 15.42 3 C 0 30022 .020 •026 .999 1 .I 1.5 2.15 3.74 3 C 0 30023 Flammarion Z •025 .039 .999 1.4 2.2 2.23 3.88 2 C 0 30024 .022 .046 .999 1.3 2.6 6.85 11.91 4f C 0 30025 Flammarion U •024 .053 .998 1.4 3.0 5.89 I0.24 4f C 0 30025A •027 .O58 .998 1.5 3.3 3.46 6.01 4 C 0 30028 .026 •083 .996 1.5 4.8 3.20 5.56 3 C 0 30035 2945A SpSrer A • 036 •060 .998 2 .i 3.4 2.62 4.55 i C 0 30035A Flammarion T • 036 .050 .998 2 .i 2.9 19.27 33.49 5f C 0 30036 •031 .060 .998 i .8 3.4 4.95 8.60 3f C 0 30036A •033 .068 .997 i .9 3.9 3.96 6.88 4 C 0 30037 2945 SpSrer .031 .075 .997 1.8 4.3 15.80 27.46 3f C 0 30037A .033 .077 •996 i .9 4.4 2.55 4.43 3 C 0 30039 2944 Herschel •036 • 099 • 994 2 .i 5.7 23.38 4O .64 1 C pp 30043 2950A Fla_aarion A .043 • 034 .998 2.5 1.9 2.18 3.79 1 pMC 0 30043A Flam_arion W .041 .037 .998 2.4 2.1 3.88 6.74 3 aMC p 30047 .042 .071 .997 2.4 4.1 9.79 17.02 4 C 0 30049 Herschel X .047 093 •995 2.7 5.3 1.47 2.56 i C 0 30051 MOsting L .059 012 .998 3.4 0.7 1.91 3.32 I pM 0 30054 Fla_rion X .052 050 .997 3.0 2.9 i .56 2.71 1 pMC 0 30056 Flan_narion Y •055 065 .996 3.2 3.7 1.66 2.89 1 pMC 0 30058 2947 Herschel C •055 087 .995 3.2 5.0 5.99 i0.41 1 C 0 30058A .053 080 .995 3.0 4.6 13.61 23.66 4 C 0 7.35 12.78 30062 .064 .029 .998 3.7 1.7 6.56 ii .40 5 C 0 30063 2950C Flammarion C .065 .035 .997 3.7 2.0 2.77 4.81 1 pMC 0 30064A .068 .041 .997 3.9 2.3 25.00 43.45 5f aMC 0 + 2 Ref.