Ammonius (aka Lyot) (on the floor of Ptolemaeus)

(formerly [/Ptolemaeus Ptolemaeus] A)

Lat: 8.5°S, Long: 0.8°W, Diam: 8 km, Depth: 1.86 km, [/R%C3%BCkl%2044 Rükl: 44]

Ptolemaeus A (Ammonius) was captured on Ranger 8's Frame P002 (third photograph in this frame, at lower left).
One of Apollo 12's orbital Hasselblad photographs of Ammonius is included in the book Full Moon by Michael Light and Andrew Chaikin. This photograph (AS12-51-7506, as Plate 43) looks almost the same as AS12-51-7507. Both photographs show the bowl-shaped crater Ammonius in the foreground, while the lunar module (LM Intrepid) is seen near the lunar horizon.
Research Ranger 8 and Apollo 12 photography: Danny Caes

Maps

([/LAC%20zone LAC zone] 77D2) LAC map Geologic map LM map LTO map

Ammonius is the most prominent crater on the floor of [/Ptolemaeus Ptolemaeus].

Depth data from [/Kurt%20Fisher%20crater%20depths Kurt Fisher database]
- Westfall, 2000: 1.86 km
- Viscardy, 1985: 1.85 km
Included in [/ALPO%20list%20of%20bright%20ray%20craters ALPO list of bright ray craters].
Included in [/ALPO%20list%20of%20banded%20craters ALPO list of banded craters]

Named for Ammonius (unkn.-c. A.D. 517-526), a Greek philosopher.
The name [/Ptolemaeus Ptolemaeus] A was part of the original [/IAU%20nomenclature IAU nomenclature] of [/Blagg%20and%20M%C3%BCller Blagg and Müller] (Catalog Entry 2963). The name is attributed to Mädler.
This replacement name for a formerly [/lettered%20crater lettered crater] was provisionally introduced on LTO-77D2 (Oct. 1974), for which it served as the chart title. It was approved in 1976 ([/IAU%20Transactions%20XVIB IAU Transactions XVIB]). - JimMosher JimMosher
Hugh Percy Wilkins and Patrick Moore proposed calling this crater Lyot, but the I.A.U. did not approve the name. The name [/Lyot Lyot] was later used for a crater near the Moon's southeastern limb.

Ptolemaeus A ("Lyot"): [/Wilkins%20and%20Moore THE MOON] by H.P.Wilkins and P.Moore.

This page has been edited 1 times. The last modification was made by - tychocrater tychocrater on Jun 13, 2009 3:24 pm - afx3u2