AS16-M-2995

Forfatter/Opretter:

NASA

Kredit:

Original: Lunar & Planetary Institute, AS16-M-2995

Update: Arizona State University, Apollo Image Archive, Apollo Browse Gallery, Apollo 16: Mapping (Metric) Camera, AS16-M-2995

Shortlink:

https://dkwiki.dk/b/195b5

kilde:

Wikimedia Commons

størrelse:

1012 x 1012 Pixel (598087 Bytes)

beskrivelse:

The flooded remnant of Letronne crater on the Moon can be seen in this image taken during the Apollo 16 mission. This photo was used in Figure 182 of Apollo Over the Moon: A View from Orbit (NASA SP-362, 1978), which has the following caption:

This arcuate structure is Letronne. It straddles the boundary between southern Oceanus Procellarum and the southern highlands. From "horn to horn" it is about 115 km wide. Astronomers have long recognized Letronne as a crater and geologists also interpret it as a crater because those parts preserved have much in common with better-preserved craters. The preserved crater elements include a large segment of a raised rim, a partly preserved blanket of ejecta occupying depressions along the lower edge of the picture, and the tips of three centrally located peaks that presumably represent the top of a buried central peak complex. The largest and steepest slopes along the rim face inward and probably define the wall of Letronne. The northern one-third of the rim and wall has been almost completely buried by the mare lavas of Oceanus Procellarum. An isolated small hill (arrow) and the crudely arcuate band of mare ridges east of the hill mark the approximate position of the buried rim. The abrupt disappearance of the rim beneath Oceanus Procellarum suggests faulting, but vertical movement without faulting is also possible; this part of Procellarum may have been tilted downward or the adjacent highlands upward.-G.W.C.

Photographic data:

Image Name: AS16-M-2995

Mission: Apollo 16

Revolution (Orbit): 63

Camera: Mapping/Metric

Exposure: 00:00:00.0889

Camera Tilt: VERT

Scan Pixel Scale: 8.198

Start Time: (DOY:115) 1972-04-24T23:30:11

Spacecraft Altitude: 122.43 km

Center Coordinates (lat, lon): -10.15°,-42.71°

Corner Coordinates: -6.85°,-45.72°

-7.2°,-39.33°

-13.61°,-39.61°

-13.21°,-46.2°

Sun Elevation: 4.0°

Features: FLAMSTEED A, LETRONNE, LETRONNE P

Film Type: 3400

Color: black&white

Licens:

Public domain