Hadley C
Contents
Hadley C
(formerly Hadley and before that Hadley C (as at present))
|
Lat: 25.46°N, Long: 2.8°E, Diam: 5.8 km, Depth: km, [/R%C3%BCkl%2022 Rükl 22] |
Table of Contents
[#Hadley C Hadley C]
[#Hadley C-Images Images]
[#Hadley C-Maps Maps]
[#Hadley C-Description Description]
[#Hadley C-Description-Wikipedia Wikipedia]
[#Hadley C-Additional Information Additional Information]
[#Hadley C-Nomenclature Nomenclature]
[#Hadley C-LPOD Articles LPOD Articles]
[#Hadley C-Bibliography Bibliography]
LO-V-105M Hadley C is in the center, with a small part of [/Rima%20Hadley Rima Hadley] touching it on the east. The dark shadow along the right margin is cast by sunlight streaming over unnamed low hills that are part of [/Montes%20Apenninus Montes Apenninus].
Images
LPOD Photo Gallery Lunar Orbiter Images Apollo Images
Maps
([/LAC%20zone LAC zone] 41B4) LAC map Geologic map LM map LTO map
Description
This simple crater on the rim of [/Rima%20Hadley Rima Hadley] is of interest primarily because of its odd nomenclature history.
Wikipedia
Additional Information
- IAU page: Hadley C
Nomenclature
- Named for John Hadley (1682-1744), a British instrument maker.
- In the original IAU Nomenclature of [/Blagg%20and%20M%C3%BCller Blagg and Müller] (1935), Hadley (the mountain) had two [/satellite%20feature lettered craters] associated with it: Hadley A and Hadley B.
- In 1964, the name Hadley C (for the present feature) was added as part of the IAU-approved [/System%20of%20Lunar%20Craters System of Lunar Craters] ([/IAU%20Transactions%20XIIB IAU Transactions XIIB]). At the same time the name of the nearby mountain (for which all three craters were named) was Latinized to the present [/Mons%20Hadley Mons Hadley]. A few years later the IAU began advocating the replacement of lettered designations with unique names, and the makers of the [/LTO LTO] charts embraced the plan, converting Hadley A to [/Joy Joy] and Hadley B to [/Santos-Dumont Santos-Dumont] ([/Joy Joy] appears in the cumulative list of approved changes published in [/IAU%20Transactions%20XVB IAU Transactions XVB] (1973), but I am unable to find any other record of its actual approval in the [/IAU%20Transactions IAU Transactions]; [/Santos-Dumont Santos-Dumont] was approved by the IAU in 1976 ([/IAU%20Transactions%20XVIB IAU Transactions XVIB])). Since the mountain had been renamed, the unadorned name Hadley seemed available and this name was provisionally assigned to the former Hadley C on LTO 41B4 (1975). The change was also unofficially reported in [/Ashbrook%2C%201974 Ashbrook, 1974].
- Although several of the other name changes proposed on that LTO were rejected, this particular change was approved in [/IAU%20Transactions%20XIXB IAU Transactions XIXB] (1985). However objections were soon raised because of the possibility of confusion with the mountain, and the decision was apparently rescinded, although the exact date on which the name was withdrawn is unclear. The status of the feature name (was it Hadley?, Hadley C?, or unnamed?) was also unclear until 2006 when the IAU General Assembly agreed to restore to the [/IAU%20Planetary%20Gazetteer IAU Planetary Gazetteer] the names of all [/satellite%20feature lettered craters] appearing in [/NASA%20RP-1097 NASA RP-1097] which did not have subsequently approved replacement names. Since Hadley C did not have an approved replacement, it seems this means the former lettered name was reinstated. However, the same logic does not seem to have been universally applied. For example, the crater [/Euclides Euclides] D had been renamed to [/Eppinger Eppinger], a new name which was also susequently dropped. Yet when the lettered names were reinstated in 2006, that name was not restored (or at least it does not appear in the on-line [/IAU%20Planetary%20Gazetteer IAU Planetary Gazetteer]). - JimMosher JimMosher
LPOD Articles
Bibliography
This page has been edited 1 times. The last modification was made by - tychocrater tychocrater on Jun 13, 2009 3:24 pm - afx4u3
