Palisa (crater)

Palisa

Apollo 16 image
Coordinates	9°24′S7°12′W / 9.4°S 7.2°W / -9.4; -7.2
Diameter	33 km
Depth	0.9 km
Colongitude	7° at sunrise
Eponym	Johann Palisa

Palisa is the remnant of a lunar impact crater that is located to the west of the walled plain Ptolemaeus. It lies to the north-northeast of the crater Davy, and is attached to the lava-flooded satellite crater Davy Y by a wide break in the southwest rim. The crater is named after the Austrian astronomer Johann Palisa. ^[1]

The rim of Palisa is worn and eroded, especially in the western half where there are multiple gaps that join the crater floor to the Mare Nubium to the west. The interior is nearly flat, and marked only by a pair of tiny craterlets in the southwest gap. The larger of this crater pair is designated Palisa P. Additional satellite craterlets D, A, and W lie just outside the northeast rim.

Satellite craters

Palisa crater and its satellite craters taken from Earth in 2012 at the University of Hertfordshire's Bayfordbury Observatory with the telescopes Meade LX200 14" and Lumenera Skynyx 2-1

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

Palisa	Latitude	Longitude	Diameter
A	9.0° S	6.7° W	5 km
C	7.7° S	6.4° W	9 km
D	8.6° S	6.9° W	8 km
E	8.4° S	5.7° W	18 km
P	9.6° S	7.3° W	5 km
T	8.2° S	8.2° W	12 km
W	9.1° S	6.3° W	4 km

References

1. "Palisa (crater)". Gazetteer of Planetary Nomenclature. USGS Astrogeology Research Program.

• Andersson, L. E.; Whitaker, E. A. (1982). NASA Catalogue of Lunar Nomenclature. NASA RP-1097.
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• Menzel, D. H.; Minnaert, M.; Levin, B.; Dollfus, A.; Bell, B. (1971). "Report on Lunar Nomenclature by the Working Group of Commission 17 of the IAU". Space Science Reviews. 12 (2): 136–186. Bibcode:1971SSRv...12..136M. doi:10.1007/BF00171763. S2CID   122125855.
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• Webb, Rev. T. W. (1962). Celestial Objects for Common Telescopes (6th revised ed.). Dover. ISBN   978-0-486-20917-3.
• Whitaker, Ewen A. (1999). Mapping and Naming the Moon. Cambridge University Press. ISBN   978-0-521-62248-6.
• Wlasuk, Peter T. (2000). Observing the Moon. Springer. ISBN   978-1-85233-193-1.

External links

• Palisa at The Moon Wiki