Difference between revisions of "Doppelmayer"
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Revision as of 19:13, 11 April 2018
Contents
Doppelmayer
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Lat: 28.48°S, Long: 41.51°W, Diam: 65.08 km, Depth: 1.1 km, [/R%C3%BCkl%2052 Rükl 52] |
Table of Contents
Lunar Orbiter IV
Images
LPOD Photo Gallery Lunar Orbiter Images Apollo Images
- Was Doppelmayer captured near the upper left corner of Apollo 16's orbital south-looking oblique Hasselblad frame AS16-120-19337? - DannyCaes DannyCaes Apr 13, 2014
Maps
([/LAC%20zone LAC zone] 93D3) LAC map Geologic map
Description
Elger
([/IAU%20Directions IAU Directions]) DOPPELMAYER.--Under a high sun this large ring-plain, 40 miles in diameter, resembles a great bay open to the N.E., without a trace of detail to break the monotony of the surface on the side facing the [/Mare%20Humorum Mare Humorum]. When, however, it is viewed under oblique morning illumination, a low broad ridge is easily traceable, extending across the opening, indicating the site of a ruined wall. There is an isolated mountain at the S.E. end of this, which casts a fine spire of shadow across the floor at sunrise. The interior contains a massive bright central mountain and several little hills. The crest of the wall on the W. is much broken.
Wikipedia
Additional Information
- IAU page: Doppelmayer
- Depth data from [/Kurt%20Fisher%20crater%20depths Kurt Fisher database]
- Pike, 1976: 1.1 km
- Westfall, 2000: 1.1 km
- Viscardy, 1985: 2.7 km
- Cherrington, 1969: 0.79 km
- Central peak height ~1300 m from shadow in Jan. 12, 1999 photo taken by 2.2-m MPG/ESO telescope (time somewhat uncertain). Doppelmayer is possibly unique in that the top of the central peak appears to be higher than the rim. Note: the Viscardy depth information seems to be erroneous. There is no evidence of 2.7 km tall rim peaks around Doppelmayer -- possibly it was confused with neighboring [/Lee Lee]?- JimMosher JimMosher
- Doppelmayer is a [/Floor%20Fractured%20Craters floor-fractured crater], one of whose characteristics is an upraised floor. [/Schultz%2C%201976b Schultz] attributes the high position of the top of Doppelmayer's central peak in relation to the rim to this uplifting (along with the rest of the central floor) of a peak of normal height for a crater of this diameter. - tychocrater tychocrater Oct 17, 2008
- [/Central%20peak%20composition Central peak composition]: A ([/Tompkins%20%26%20Pieters%2C%201999 Tompkins & Pieters, 1999])
- Satellite crater Doppelmayer K is on the [/ALPO%20list%20of%20bright%20ray%20craters ALPO list of bright ray craters].
- Doppelmayer N, a bowl shaped high-albedo crater west-southwest of Doppelmayer itself, has quite a large boulder slightly outside the north-northwestern part of its rim. The diameter of this boulder seems to be something of 100 meters, according to the scale on the LROC's high-resolution NAC photographs. - DannyCaes DannyCaes Jul 14, 2017
Is it an irregular elevation, or a shallow depression? (trompe l'oeil effect near Doppelmayer J)
- There's a curious irregular "mensa"-like elevation west of Doppelmayer J, which is the southern one of the three bowl-shaped craters in the central part of Mare Humorum (Doppelmayer J, K, L). One of the magnificent Hi-Res post-sunrise photographs of the Mare Humorum region made by Christian Viladrich shows that curious "mensa"-like elevation as some sort of shallow rimless depression (a veritable "trompe l'oeil" effect!). See Sunrise at the Doppelmayer part of Mare Humorum - Christian Viladrich, and Sunrise at the Gassendi part of Mare Humorum - Christian Viladrich. - DannyCaes DannyCaes Dec 17, 2016
Nomenclature
Johan Gabriel Doppelmayer (1671 –12/1/1750) was a German mathematician, astronomer, and cartographer. He completed his studies in 1698 with a dissertation on the Sun.
Doppelmayer pyroclastics
The Doppelmayer pyroclastics are briefly mentioned in the 21st Century Atlas of the Moon (C.A.Wood/ M.J.S.Collins) on page 82 (the southwest quadrant of the Full Moon) and on page 58 (photograph of the Doppelmayer rilles).
Lettered Craters
LPOD Articles
Doppelmayer Surprises [/LPOD%20Feb%208%2C%202008 Humor Me Once More]
Bibliography
[/Alphabetical%20Index Named Features] -- Prev: [/Donner Donner] -- Next: [/Rimae%20Doppelmayer Rimae Doppelmayer]
This page has been edited 1 times. The last modification was made by - tychocrater tychocrater on Jun 13, 2009 3:24 pm - afx3u2
