Ritter (of the Ritter-Sabine pair)
Lat: 2.0°N, Long: 19.2°E, Diam: 29 km, Depth: 1.3 km, Rükl: 35
Left: LOIV-085-h1, Right: Apollo AS-10-32-4760, Sabine & Ritter
- Superb Apollo 11 oblique view (AS11-41-6121, which is reproduced on pages 200-201 in Norman Mailer's splendid book MOONFIRE, THE EPIC JOURNEY OF APOLLO 11).
(IAU Directions) RITTER.--Is very similar in every respect to Sabine. A curved rill mentioned by Neison is on the N.W. side of the floor and is concentric with the wall. On the N. side of this ring-plain are three conspicuous craters, the two nearer being equal in size and the third much smaller.
- Depth data from Kurt Fisher database
- Pike, 1976: 1.3 km
- Westfall, 2000: 1.3 km
- Viscardy, 1985: 1.3 km
- Cherrington, 1969: 1.31 km
- There's a very small crater between the two bowl-shaped craters Ritter B and C (immediately north-northwest of Ritter). This small crater is an interesting test object for observers of the moon with powerful telescopes. Research: Antoine Van Der Jeugt and Danny Caes.
- TSI = 20, CPI = 25, FI = 25; MI = 70 Smith and Sanchez, 1973
- The present IAU name honors two men:
- The name Ritter (honoring Karl) was part of the original IAU nomenclature of Blagg and Müller (catalog number 542), where the name is attributed to Beer and Mädler.
- Georg was added as a second honoree in Menzel, 1971, where little was known about him other than that he had written some paper in the 1880's.
- According to Neison (1880), the British Association Lunar Committee (Birt?) at one time advocated changing the name Ritter B to J. Gwilt and Ritter C to G. Gwilt, possibly honoring English architect Joseph Gwilt and his son George Gwilt. Their suggestions were not adopted in later catalogues.
- Wood, C.A. 7/2006. False Volcanoes on the Moon. S&T 112:(1):66-67
- Wood, C.A. Aug. 2003. Treasures of the Western Tranquillitatis. S&T 8/2003:120
- Harold Hill. A Portfolio of Lunar Drawings, pages 6, 7.