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Picard is a lunar impact crater that lies in Mare Crisium. The crater is named for 17th century French astronomer and geodesist Jean Picard.[1] It is the biggest non-flooded crater of this mare, being slightly larger than Peirce to the north-northwest. To the west is the almost completely flooded crater Yerkes. To east of Picard is the tiny Curtis.

Picard
Picard crater AS17-M-0289.jpg
Apollo 17 Mapping camera image
Coordinates14°34′N 54°43′E / 14.57°N 54.72°E / 14.57; 54.72Coordinates: 14°34′N 54°43′E / 14.57°N 54.72°E / 14.57; 54.72
Diameter23 km
Depth2.4 km
Colongitude306° at sunrise
EponymJean-Félix Picard

Picard is a crater from the Eratosthenian period, which lasted from 3.2 to 1.1 billion years ago. Inside Picard is a series of terraces that seismologists have attributed to a collapse of the crater floor. It has a cluster of low hills at the bottom.[2]

Satellite cratersEdit

 
Satellite craters of Picard

By convention these features are identified on lunar maps by placing the letter on the side of the crater midpoint that is closest to Picard.[3]

 
Oblique Lunar Orbiter 4 image
 
Oblique Apollo 15 Panoramic Camera image, facing south
Picard Coordinates Diameter, km
K 9°44′N 54°34′E / 9.73°N 54.56°E / 9.73; 54.56 (Picard K) 9
L 10°19′N 54°19′E / 10.32°N 54.31°E / 10.32; 54.31 (Picard L) 7
M 10°13′N 53°57′E / 10.21°N 53.95°E / 10.21; 53.95 (Picard M) 8
N 10°31′N 53°34′E / 10.52°N 53.57°E / 10.52; 53.57 (Picard N) 19
P 8°49′N 53°37′E / 8.82°N 53.62°E / 8.82; 53.62 (Picard P) 8
Y 13°11′N 60°16′E / 13.18°N 60.27°E / 13.18; 60.27 (Picard Y) 4

The following craters have been renamed by the IAU.

ReferencesEdit

  1. ^ "Picard (crater)". Gazetteer of Planetary Nomenclature. USGS Astrogeology Research Program.
  2. ^ Moore, Patrick (2001). On the Moon. Sterling Publishing Co.. ISBN 0-304-35469-4.
  3. ^ Bussey, B.; Spudis, P. (2004). The Clementine Atlas of the Moon. New York: Cambridge University Press. ISBN 0-521-81528-2.

External linksEdit