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Picard (crater)

释义

Satellite craters
References
External links

{{Infobox Lunar crater
| image = Picard crater AS17-M-0289.jpg
| image_size =
| caption = Apollo 17 Mapping camera image
| coordinates = {{coord|14.57|N|54.72|E|globe:moon_type:landmark|display=inline,title}}
| diameter = 23 km
| depth = 2.4 km
| colong = 306
| eponym = Jean-Félix Picard
}}

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 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 craters

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]

Picard	Coordinates	Diameter, km
K	9.73\|N\|54.56\|E\|globe:moon\|name=Picard K}}	9
L	10.32\|N\|54.31\|E\|globe:moon\|name=Picard L}}	7
M	10.21\|N\|53.95\|E\|globe:moon\|name=Picard M}}	8
N	10.52\|N\|53.57\|E\|globe:moon\|name=Picard N}}	19
P	8.82\|N\|53.62\|E\|globe:moon\|name=Picard P}}	8
Y	13.18\|N\|60.27\|E\|globe:moon\|name=Picard Y}}	4

The following craters have been renamed by the IAU.

Picard G — see Tebbutt.
Picard H — see Shapley.
Picard X — see Fahrenheit.
Picard Z — see Curtis.

References

1. ^{{GPN|4720}}
2. ^Moore, Patrick (2001). On the Moon. Sterling Publishing Co.. {{ISBN|0-304-35469-4}}.
3. ^{{cite book | author=Bussey, B. | author-link=Ben Bussey | author2=Spudis, P. | author2-link=Paul Spudis | date=2004 | title=The Clementine Atlas of the Moon | publisher=Cambridge University Press | location=New York | isbn=0-521-81528-2 }}

External links

LTO-62A1 Yerkes — L&PI topographic map
Map of the region
Part of Picard crater: photo by Lunar Reconnaissance Orbiter with resolution 1,3 meters/pixel
{{cite web

|url =http://lroc.sese.asu.edu/posts/658
|title =Picard Crater Impact Melt
|publisher =lroc.sese.asu.edu
|date =2012-12-11
|accessdate =2014-12-12
|archiveurl =https://web.archive.org/web/20141212162704/http://lroc.sese.asu.edu/posts/658
|archivedate=2014-12-12
|deadurl =no
}}

{{cite web

|url = http://www.vgl.org/webfiles/lan/picard.htm
|title = The Crater Picard: Strange Convergences
|publisher = vgl.org
|date = 1996-04-04
|accessdate = 2014-12-12
|deadurl = yes
|archiveurl = https://web.archive.org/web/20071025005725/http://www.vgl.org/webfiles/lan/picard.htm
|archivedate = 2007-10-25
|df =
}}

Picard in The-Moon Wiki

1 : Impact craters on the Moon

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