(disallowed name; appears on maps as Mons Undest, but not approved in either form; formerly known as Lambert Gamma)
|Lat: 26.5°N, Long: 18.5°W, Diam: 7 km, Depth: km, Rükl: 20|
AS15-M-1152 The feature formerly called Lambert Gamma, and provisionally renamed Mons Undest (a name not allowed by the IAU) is the shadow casting (and somewhat nose-shaped) hill below the "B" arrow. The large crater on the left is Lambert. The "A" and "B" arrows are pointing to parts of Dorsa Stille (on whose page the remaining nomenclature is explained).
- There are two orbital Hasselblads of Mons Undest. They are: AS15-81-11027 and AS15-81-11029. An interesting Fairchild-mapping (metric) photograph, also made by Apollo 15, is AS15-M-1552 which shows Mons Undest near the lower left corner (can't miss it!).
- Mons Undest was also captured on several of Apollo 17's orbital ITEK-panoramic frames, such as AS17-P-3071 (scroll to the right).
- Research orbital Apollo 15 and Apollo 17 photography: Danny Caes
- The position and diameter given at the top of the page are for the disallowed name Undest as listed in the IAU Planetary Gazetteer.
- Observed by T.W.Webb and Hunt as a bright star (glittering on the terminator like a star with rays); see page 124 in Webb's Celestial Objects for Common Telescopes (Volume 1: The Solar System, chapter THE MOON). - DannyCaes Jul 6, 2015
- Named for Sigrid Undset (1882-1949), a Norwegian novelist and winner of the 1928 Nobel prize in literature.
- This peak was known as Lambert Gamma in the original IAU nomenclature of Blagg and Müller (1935) and in the System of Lunar Craters.
- All Greek-lettered peak names were discontinued by the IAU in 1973 (IAU Transactions XVB), and it was suggested that new names be adopted for them.
- The replacement name Mons Undest (apparently a misspelling of "Undset") was provisionally introduced on LTO-40B4 (April 1974). Although the IAU had recommended using writers names in 1973 (IAU Transactions XVB), that decision was soon reversed (IAU Transactions XVB). Hence the name Mons Undest was never approved, and joins many other invalid that appear on the LTO charts.
- For unknown reasons, the disallowed name is listed in the on-line IAU Planetary Gazetteer as Undest (rather than Mons Undest).
- This peak remains unnamed in the current IAU nomenclature.