Crater diameter sequence for central north Oceanus Procellarum for small aperture amateur telescopes

Reiner Gamma to Aristarchus to Kepler to Flamsteed - N24, W65 to N24W35 to S5,W35 to S5, W65 | Rev. 9/24/2006 A
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Legend

Graphic Description
Rükl chart number - Lunar longitude - Rükl chart boundary line
Major feature - Primary crater - crater diameter in kilometers
Satellite feature - crater diameter in kilometers - line pointing to primary crater
Rima width in kilometers
Rima width - feature not observable by amateur telescopes
Crater with crater depth in kilometers - crater central peak with height in kilometers
Dome - diameter and height in kilometers

Crater sequence tables

Sequence tables - formatted for printing
Table 1 - Diameters of craters, 20km and smaller, by ascending Rükl chart number and ascending crater name, plotted on chart N=111
Name Clat Clon Rükl Diam
Galilaei S 15.4 -64.7 17 2
Galilaei T 16.2 -61.4 17 2
Galilaei V 17.1 -60.3 17 3
Galilaei W 17.8 -60.5 17 4
Krafft U 17.2 -64.7 17 3
Seleucus E 22.4 -63.9 17 4
Aristarchus F 21.7 -46.5 18 18
Aristarchus S 19.3 -46.2 18 4
Aristarchus T 19.6 -46.4 18 4
Aristarchus U 19.7 -48.6 18 4
Bessarion C 16 -42.6 18 9
Herodotus A 21.5 -52 18 10
Herodotus B 22.6 -55.4 18 6
Herodotus C 21.9 -55 18 5
Marius B 16.3 -47.3 18 12
Marius L 15.9 -55.7 18 8
Marius M 17.4 -54.9 18 6
Marius N 18.7 -54.7 18 4
Marius P 17.9 -51.3 18 4
Schiaparelli A 23 -62 18 7
Seleucus A 22 -60.5 18 6
Aristarchus D 23.7 -42.9 19 5
Aristarchus N 22.8 -42.9 19 3
Bessarion 14.9 -37.3 19 10
Bessarion A 17.1 -39.8 19 13
Bessarion B 16.8 -41.7 19 12
Bessarion D 19.8 -41.7 19 9
Bessarion E 15.4 -37.3 19 8
Bessarion G 14.9 -40.3 19 4
Bessarion W 16.7 -36.9 19 3
Brayley 20.9 -36.9 19 14
Brayley C 21.4 -39.4 19 9
Brayley E 21.2 -39.7 19 5
Brayley K 21.2 -41.7 19 3
Brayley L 20.9 -42.6 19 4
Galilaei 10.5 -62.7 28 15
Galilaei A 11.7 -62.9 28 11
Galilaei D 8.7 -62.7 28 1
Galilaei E 14 -61.8 28 7
Galilaei J 13 -61.9 28 4
Galilaei K 13 -62.7 28 3
Hermann A 0.4 -58.2 28 4
Hermann F 1.3 -55.4 28 5
Hermann H 0.9 -61.8 28 4
Hermann J 2.6 -57.4 28 4
Hermann K 2.4 -58.3 28 3
Hermann L 2.4 -59.1 28 3
Hermann R 0.6 -55.6 28 3
Hermann S 1 -55.5 28 4
Hevelius D 3.1 -60.8 28 8
Reiner N 5.4 -57.5 28 4
Encke E 0.3 -40.1 29 9
Encke X 0.9 -40.3 29 3
Hermann E 0.1 -52 29 4
Kepler C 10 -41.8 29 11
Kepler D 7.4 -41.9 29 10
Kepler E 7.4 -43.9 29 6
Maestlin 4.9 -40.6 29 7
Maestlin G 2 -42.1 29 4
Maestlin H 4.7 -43.5 29 7
Marius A 12.6 -46 29 15
Marius C 14 -47.6 29 11
Marius D 11.4 -45 29 9
Marius E 12.1 -52.7 29 6
Marius F 12.1 -45.3 29 6
Marius G 12.1 -50.6 29 3
Marius J 10.5 -46.9 29 3
Marius K 9.4 -50.6 29 4
Marius R 13.6 -50.3 29 5
Marius U 9.6 -47.6 29 3
Marius V 9.9 -48.3 29 2
Marius W 9.4 -49.7 29 3
Marius X 9.7 -54.9 29 5
Marius Y 9.8 -50.7 29 2
Reiner A 5.2 -51.4 29 10
Reiner C 3.5 -51.5 29 7
Reiner E 1.9 -49.6 29 4
Reiner G 3.3 -54.3 29 3
Reiner H 9.1 -54.7 29 8
Reiner K 8.1 -53.9 29 3
Reiner L 8 -54.6 29 6
Reiner Q 1.4 -50.9 29 3
Reiner S 2.2 -50.7 29 4
Reiner T 3.7 -52.2 29 2
Reiner U 4.1 -52.5 29 3
Suess 4.4 -47.6 29 8
Suess B 5.7 -47.3 29 8
Suess D 4.7 -46.5 29 7
Suess F 1.1 -44.6 29 7
Suess G 3.4 -48.4 29 4
Suess H 4 -45.7 29 4
Suess J 6.9 -48.5 29 3
Suess K 6.5 -50 29 3
Suess L 6.1 -50.5 29 5
Encke B 2.4 -36.8 30 12
Encke C 0.7 -36.4 30 9
Encke K 1.4 -37.2 30 4
Kepler A 7.2 -36.1 30 11
Kepler F 8.3 -39 30 7
Damoiseau G -2.5 -55.6 39 4
Damoiseau L -4.5 -59.3 39 14
Hermann -0.9 -57 39 15
Hermann B -0.3 -57.1 39 5
Flamsteed -4.5 -44.3 40 20
Flamsteed D -3.2 -44.9 40 6
Flamsteed E -3.7 -46.1 40 2
Flamsteed K -3.1 -43.7 40 4
Flamsteed X -2.3 -47.3 40 3
Flamsteed Z -1.3 -47.8 40 3
Hermann D -2.3 -54 40 3
Wichmann C -4.7 -37.4 41 3
Table 2 - Diameters of craters, 20km and smaller, by ascending diameter, descending latitude and descending longitude, plotted on chart N=111
Name Clat Clon Rükl Diam
Galilaei D 8.7 -62.7 28 1
Galilaei T 16.2 -61.4 17 2
Galilaei S 15.4 -64.7 17 2
Marius V 9.9 -48.3 29 2
Marius Y 9.8 -50.7 29 2
Reiner T 3.7 -52.2 29 2
Flamsteed E -3.7 -46.1 40 2
Aristarchus N 22.8 -42.9 19 3
Brayley K 21.2 -41.7 19 3
Krafft U 17.2 -64.7 17 3
Galilaei V 17.1 -60.3 17 3
Bessarion W 16.7 -36.9 19 3
Galilaei K 13 -62.7 28 3
Marius G 12.1 -50.6 29 3
Marius J 10.5 -46.9 29 3
Marius U 9.6 -47.6 29 3
Marius W 9.4 -49.7 29 3
Reiner K 8.1 -53.9 29 3
Suess J 6.9 -48.5 29 3
Suess K 6.5 -50 29 3
Reiner U 4.1 -52.5 29 3
Reiner G 3.3 -54.3 29 3
Hermann K 2.4 -58.3 28 3
Hermann L 2.4 -59.1 28 3
Reiner Q 1.4 -50.9 29 3
Encke X 0.9 -40.3 29 3
Hermann R 0.6 -55.6 28 3
Flamsteed Z -1.3 -47.8 40 3
Flamsteed X -2.3 -47.3 40 3
Hermann D -2.3 -54 40 3
Wichmann C -4.7 -37.4 41 3
Seleucus E 22.4 -63.9 17 4
Brayley L 20.9 -42.6 19 4
Aristarchus U 19.7 -48.6 18 4
Aristarchus T 19.6 -46.4 18 4
Aristarchus S 19.3 -46.2 18 4
Marius N 18.7 -54.7 18 4
Marius P 17.9 -51.3 18 4
Galilaei W 17.8 -60.5 17 4
Bessarion G 14.9 -40.3 19 4
Galilaei J 13 -61.9 28 4
Marius K 9.4 -50.6 29 4
Reiner N 5.4 -57.5 28 4
Suess H 4 -45.7 29 4
Suess G 3.4 -48.4 29 4
Hermann J 2.6 -57.4 28 4
Reiner S 2.2 -50.7 29 4
Maestlin G 2 -42.1 29 4
Reiner E 1.9 -49.6 29 4
Encke K 1.4 -37.2 30 4
Hermann S 1 -55.5 28 4
Hermann H 0.9 -61.8 28 4
Hermann A 0.4 -58.2 28 4
Hermann E 0.1 -52 29 4
Damoiseau G -2.5 -55.6 39 4
Flamsteed K -3.1 -43.7 40 4
Aristarchus D 23.7 -42.9 19 5
Herodotus C 21.9 -55 18 5
Brayley E 21.2 -39.7 19 5
Marius R 13.6 -50.3 29 5
Marius X 9.7 -54.9 29 5
Suess L 6.1 -50.5 29 5
Hermann F 1.3 -55.4 28 5
Hermann B -0.3 -57.1 39 5
Herodotus B 22.6 -55.4 18 6
Seleucus A 22 -60.5 18 6
Marius M 17.4 -54.9 18 6
Marius F 12.1 -45.3 29 6
Marius E 12.1 -52.7 29 6
Reiner L 8 -54.6 29 6
Kepler E 7.4 -43.9 29 6
Flamsteed D -3.2 -44.9 40 6
Schiaparelli A 23 -62 18 7
Galilaei E 14 -61.8 28 7
Kepler F 8.3 -39 30 7
Maestlin 4.9 -40.6 29 7
Maestlin H 4.7 -43.5 29 7
Suess D 4.7 -46.5 29 7
Reiner C 3.5 -51.5 29 7
Suess F 1.1 -44.6 29 7
Marius L 15.9 -55.7 18 8
Bessarion E 15.4 -37.3 19 8
Reiner H 9.1 -54.7 29 8
Suess B 5.7 -47.3 29 8
Suess 4.4 -47.6 29 8
Hevelius D 3.1 -60.8 28 8
Brayley C 21.4 -39.4 19 9
Bessarion D 19.8 -41.7 19 9
Bessarion C 16 -42.6 18 9
Marius D 11.4 -45 29 9
Encke C 0.7 -36.4 30 9
Encke E 0.3 -40.1 29 9
Herodotus A 21.5 -52 18 10
Bessarion 14.9 -37.3 19 10
Kepler D 7.4 -41.9 29 10
Reiner A 5.2 -51.4 29 10
Marius C 14 -47.6 29 11
Galilaei A 11.7 -62.9 28 11
Kepler C 10 -41.8 29 11
Kepler A 7.2 -36.1 30 11
Bessarion B 16.8 -41.7 19 12
Marius B 16.3 -47.3 18 12
Encke B 2.4 -36.8 30 12
Bessarion A 17.1 -39.8 19 13
Brayley 20.9 -36.9 19 14
Damoiseau L -4.5 -59.3 39 14
Marius A 12.6 -46 29 15
Galilaei 10.5 -62.7 28 15
Hermann -0.9 -57 39 15
Aristarchus F 21.7 -46.5 18 18
Flamsteed -4.5 -44.3 40 20
Table 3 - Depths and heights of features in kilometers
Name Clat Clong Rükl Depth_Height_kilometers
Aristarchus 23.7 -47.4 18 3.6
Herodotus 23.2 -49.7 18 1.4
Dome Herodotus 1 20.18 -49.82 18 0.6
Schiaparelli 23.4 -58.8 18 2.1
Bessarion 14.9 -37.3 19 0.9
Brayley 20.9 -36.9 19 2.3
Marius 11.9 -50.8 29 1.6
Domes Marius Hills 12.5 -54 29 0.3-0.6
Reiner 7 -54.9 29 2.5
Encke 4.6 -36.6 30 0.7
Galilaei 10.5 -62.7 30 2
Kepler 8.1 -38 30 2.2
Dome Kepler 1 8.92 -39.62 30 0.3

Corrections to the charts

After initial web posting, the following corrections were received regarding the crater sequence chart:

Instructions

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Other crater sequence charts

Purpose

This crater sequence chart is intended as a resouce for amateur astronomers to explore crater sizes that are visible at various magnifications and apertures. The crater sequence chart extends from the lunar equator or north 24 selenographic latitude and to west 65 selenographic longitude.

By comparing the Clementine sinusodial projection with charts in Rükl's Atlas, small aperture telescope owners gain an appreciation of that selenographic latitude and longitude has on foreshortening the appearance of craters. Because the source catalogue reports small craters in one kilometer increments and the smallest crater mapped is 1 kilometer, this chart will be of less use to modern expert amateur lunar imagers who can image to sub-kilometer resolutions.

Chart Development

A catalogue of near-side craters smaller than 20km was developed in Microsoft Excel from the U.S.G.S. Gazetter of Planetary Nomenclature. Small crater sizes in the Gazetter are in reported 1 kilometer increments. The primary source for Gazetter lunar small crater sizes was Andersson & Whitaker (1982), who in turn relied on earlier unpublished measurements of craters taken from Lunar Orbitor IV images by Wood & Andersson (1973). See May 13, 2004 Lunar Picture of the Day for a discussion. Wood & Andersson's catalogue reports small crater diameters by both depth and diameter in 0.1 kilometer increments, but the catalogue is not readily available in a digital form. The level of precision of the data in Wood & Andersson's original catalogue was not carried forward into the current Gazetter.

U.S.G.S. Map-A-Planet was used to obtain a sinusodial projection of the Clementine 750 nm base map of the central north Oceanus Procellarum region. The crater catalogue based on the U.S.G.S. Gazetter was used to identify the crater size sequence. Rükl's Atlas of the Moon was consulted for chart boundaries. The sequence Rükl's Atlas chart boundaries were marked on the Clementine base image. Cherrington's atlas was consulted for crater depths.

Craters were selected based on having the same identification in the Gazetter and in Rükl's Atlas. Craters in the Gazetter with different designations in Rükl's Atlas were excluded from the chart to maintain consistency between sources commonly used by amateurs. Some craters located in high albedo areas were excluded. A few positive relief heights for domes were added from the GLR lunar dome database.

References and Acknowledgements

This project makes use of research materials supplied courtesy of the USGS Astrogeology Research Program.

Andersson, L.A. and Wood, C. 1978. Catalog of Lunar Craters (Unpublished).

Andersson, L.A. and Whitaker, E.A.1982. NASA Catalog of Lunar Nomenclature. NASA Reference Publication 1097. http://host.planet4589.org/astro/lunar/

Cherrington, Jr. E.H. 1984. Gazetter. In Exploring the Moon Through Binoculars and Small Telescopes. Dover.

Kapral, C.A. and Garfinkle, R.A. (Geologic Research Group). May 2005. GLR Catalogue of Lunar Domes (Draft). Web document. http://www.glrgroup.org/domes/kapralcatalog.htm

Rukl, A. 2004 (2ed). Atlas of the Moon. Sky Publishing.

USGS. 2006. Gazetteer of Planetary Nomenclature. http://planetarynames.wr.usgs.gov/jsp/FeatureTypes2.jsp?system=Earth&body=Moon&systemID=3&bodyID=11

USGS. 2006. Map-A-Planet. http://pdsmaps.wr.usgs.gov/maps.html

Wood, Charles. 5/13/2004. A New/Old Catalog of Lunar Craters. LPOD. http://www.lpod.org/archive/archive/2004/05/LPOD-2004-05-13.htm

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Amateur content

This website contains amateur astronomer developed materials and is not suitable for citation as an authoritative source.

No copyright asserted

No copyright is asserted to any original content materials developed and included by this author in this website and the same are released to the public domain. No copyright is asserted as to any scientific fact or public domain image incorporated herein.

Prepared by and report errors or broken links to: K. Fisher 9/2006 fisherka@csolutions.net Org. 9/24/2006