Fermat (crater): Difference between revisions

Fermat
	Location of the lunar crater Fermat.
Diameter	39 km
Depth	2.0 km
Colongitude	20° at sunrise
Eponym	Pierre de Fermat

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Revision as of 15:13, 22 September 2009

Fermat is a lunar impact crater located to the west of the Rupes Altai escarpment. To the west-southwest is the larger crater Sacrobosco, and to the southwest is the irregular Pons. It is 39 kilometers in diameter and two kilometers deep.^[1]

The rim of Fermat is worn and somewhat irregular, but still possesses an outer rampart. The north rim is indented by a double crater formation that includes Fermat A. The floor is relatively flat and does not have a central rise.^[2] The crater is from the Pre-Imbrian period, 4.55 to 3.85 billion years ago.^[1]

It is named for 17th century French mathematician Pierre de Fermat.^[1]

Satellite craters

By convention these features are identified on lunar maps by placing the letter on the side of the crater mid-point that is closest to Fermat.^[3]

Fermat	Coordinates	Diameter
A	21°48′S 19°36′E / 21.8°S 19.6°E / -21.8; 19.6	17 km
B	23°00′S 21°06′E / 23.0°S 21.1°E / -23.0; 21.1	11 km
C	21°00′S 18°30′E / 21.0°S 18.5°E / -21.0; 18.5	14 km
D	20°06′S 18°00′E / 20.1°S 18.0°E / -20.1; 18.0	13 km
E	19°54′S 19°54′E / 19.9°S 19.9°E / -19.9; 19.9	7 km
F	22°06′S 20°12′E / 22.1°S 20.2°E / -22.1; 20.2	5 km
G	19°24′S 20°00′E / 19.4°S 20.0°E / -19.4; 20.0	7 km
H	23°06′S 20°42′E / 23.1°S 20.7°E / -23.1; 20.7	5 km
P	23°36′S 19°18′E / 23.6°S 19.3°E / -23.6; 19.3	37 km

References

^ ^a ^b ^c Autostar Suite Astronomer Edition. CD-ROM. Meade, April 2006.
^ Rükl, Antonín (1990). Atlas of the Moon. Kalmbach Books. ISBN 0-913135-17-8.
^ Bussey, B.; Spudis, P., (2004). The Clementine Atlas of the Moon. New York: Cambridge University Press. ISBN 0-521-81528-2.{{cite book}}: CS1 maint: extra punctuation (link) CS1 maint: multiple names: authors list (link)

[a-1] Autostar Suite Astronomer Edition. CD-ROM. Meade, April 2006.

[2] Rükl, Antonín (1990). Atlas of the Moon. Kalmbach Books. ISBN 0-913135-17-8.

[3] Bussey, B.; Spudis, P., (2004). The Clementine Atlas of the Moon. New York: Cambridge University Press. ISBN 0-521-81528-2.{{cite book}}: CS1 maint: extra punctuation (link) CS1 maint: multiple names: authors list (link)

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@@ Line 29: / Line 29: @@
 {| class="wikitable"
 !width="25%" style="background:#eeeeee;" |Fermat
-!width="25%" style="background:#eeeeee;" |Latitude
+!width="25%" style="background:#eeeeee;" |
-!width="25%" style="background:#eeeeee;" |Longitude
 !width="25%" style="background:#eeeeee;" |Diameter
 |-
 |align="center"|A
-|align="center"|21.8° S
+|align="center"|21.8S
-|align="center"|19.6° E
 |align="center"|17 km
 |-
 |align="center"|B
-|align="center"|23.0° S
+|align="center"|23.0S
-|align="center"|21.1° E
 |align="center"|11 km
 |-
 |align="center"|C
-|align="center"|21.0° S
+|align="center"|21.0S
-|align="center"|18.5° E
 |align="center"|14 km
 |-
 |align="center"|D
-|align="center"|20.1° S
+|align="center"|20.1S
-|align="center"|18.0° E
 |align="center"|13 km
 |-
 |align="center"|E
-|align="center"|19.9° S
+|align="center"|19.9S
-|align="center"|19.9° E
 |align="center"|7 km
 |-
 |align="center"|F
-|align="center"|22.1° S
+|align="center"|22.1S
-|align="center"|20.2° E
 |align="center"|5 km
 |-
 |align="center"|G
-|align="center"|19.4° S
+|align="center"|19.4S
-|align="center"|20.0° E
 |align="center"|7 km
 |-
 |align="center"|H
-|align="center"|23.1° S
+|align="center"|23.1S
-|align="center"|20.7° E
 |align="center"|5 km
 |-
 |align="center"|P
-|align="center"|23.6° S
+|align="center"|23.6S
-|align="center"|19.3° E
 |align="center"|37 km
 |}