Zupus (crater)

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Crater characteristics
Coordinates	17.2° S, 52.3° W
Diameter	38 km
Depth	None
Colongitude	52° at sunrise
Eponym	Giovanni B. Zupi

Zupus is the lava-flooded remains of a lunar crater. It is located on a southwestern reach of the Oceanus Procellarum, to the northwest of Mare Humorum. To the north-northeast is the flooded Billy crater, and some distance to the southeast is the Mersenius crater. A system of faint rilles named the Rimae Zupus lie to the northwest, following a coarse to the north-northwest toward the maria.

Little remains of the original formation, and the rim is low and irregular in outline—giving the feature the appearance of a valley. This rim climbs to a maximum height of 1.3 km above the base. The crater Zupus S intrudes upon the eastern rim. A faint ghost-crater lies in the maria to the northeast. The maria covering the Zupus crater floor is darker in hue than the surrounding terrain, making the feature relatively easy for an observer to locate.

[edit] 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 Zupus crater.

Zupus	Latitude	Longitude	Diameter
A	17.2° S	53.5° W	6 km
B	17.6° S	54.3° W	6 km
C	17.3° S	55.1° W	19 km
D	19.7° S	53.4° W	17 km
F	17.3° S	54.0° W	4 km
K	15.7° S	52.1° W	17 km
S	17.0° S	51.3° W	24 km
V	18.2° S	56.3° W	4 km
X	18.9° S	54.9° W	5 km
Y	17.4° S	49.6° W	2 km
Z	18.2° S	50.1° W	3 km

[edit] References

• 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 on 2007-08-05.
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• Price, Fred W. (1988). The Moon Observer's Handbook. Cambridge University Press. ISBN 0521335000. 
• Rükl, Antonín (1990). Atlas of the Moon. Kalmbach Books. ISBN 0-913135-17-8. 
• Webb, Rev. T. W. (1962). Celestial Objects for Common Telescopes, 6th revision, Dover. ISBN 0-486-20917-2. 
• Whitaker, Ewen A. (1999). Mapping and Naming the Moon. Cambridge University Press. ISBN 0-521-62248-4. 
• Wlasuk, Peter T. (2000). Observing the Moon. Springer. ISBN 1852331933.