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Sirsalis (crater)

Coordinates: 12°30′S 60°24′W / 12.5°S 60.4°W / -12.5; -60.4
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Sirsalis
Lunar Orbiter 4 image showing Sirsalis at right of center, Sirsalis A at left of center, and Sirsalis F and J in lower right
Coordinates12°30′S 60°24′W / 12.5°S 60.4°W / -12.5; -60.4
Diameter42 km
Depth3.0 km
Colongitude61° at sunrise
EponymGerolamo Sersale

Sirsalis is a relatively young lunar impact crater located near the western lunar limb, to the southwest of the Oceanus Procellarum. The crater lies across a ridge that runs in a north–south direction. It has a sharp edge and a low central peak. The crater overlaps the slightly larger and older Sirsalis A to the west-southwest, and the two form a distinctive feature.

To the east is a rille system named the Rimae Sirsalis. The longest of these rilles follows a line running approximately north-northeast to south-southwest, just clearing the southeastern rim of Sirsalis by about 10 kilometers. This long rille runs 330 kilometers from the shore of Oceanus Procellarum until it crosses the crater Darwin A and intersects the Rimae Darwin to the east of Darwin.

Satellite craters

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

Sirsalis Latitude Longitude Diameter
A 12.7° S 61.3° W 49 km
B 11.1° S 63.7° W 16 km
C 10.3° S 63.8° W 22 km
D 9.9° S 58.6° W 35 km
E 8.1° S 56.5° W 72 km
F 13.5° S 60.1° W 13 km
G 13.7° S 61.7° W 30 km
H 14.0° S 62.4° W 26 km
J 13.4° S 59.8° W 12 km
K 10.4° S 57.3° W 7 km
T 9.2° S 53.4° W 16 km
Z 10.7° S 61.9° W 91 km

References

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  • Andersson, L. E.; Whitaker, E. A. (1982). NASA Catalogue of Lunar Nomenclature. NASA RP-1097.
  • Blue, Jennifer (July 25, 2007). "Gazetteer of Planetary Nomenclature". USGS. Retrieved 2007-08-05.
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