petavius (crater)

Petavius is a large lunar impact crater located to the southeast of the Mare Fecunditatis, near the southeastern lunar limb. Attached to the northwest rim is the smaller Wrottesley crater. To the southeast are Palitzsch crater, Vallis Palizsch, and Hase crater. Further to the north is the large Vendelinus crater. The crater Petavius appears oblong when viewed from the Earth due to foreshortening. The outer wall of Petavius crater is unusually wide in proportion to the diameter, and displays a double-rim along the south and west sides. The height of the rim varies by as much as 50% from the lowest point. The convex crater floor has been resurfaced by lava flow, and displays a rille system named the Rimae Petavius. The large central mountains are a prominent formation with multiple peaks, climbing 1.7 kilometers above the floor. A deep fracture runs from the peaks toward the southwest rim of the crater. Rev. T. W. Webb described Petavius as "one of the finest spots in the Moon: its grand double rampart, on east side nearly 11,000 ft. High, its terraces, and convex interior with central hill and cleft, compose a magnificent landscape in the lunar morning or evening, entirely vanishing beneath a Sun risen but halfway to the meridian." Crater Petavius B to the north-northwest of Petavius has a small ray system that lies across the Mare Fecunditatis surface.

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 Petavius crater.

idth="25%" style="background:#eeeeee;" \|Latitude	width="25%" style="background:#eeeeee;" \|Longitude	width="25%" style="background:#eeeeee;" \|Diameter
lign="center"\|A	align="center"\|26.0° S	align="center"\|61.6° E	align="center"\|5 km
lign="center"\|B	align="center"\|19.9° S	align="center"\|57.1° E	align="center"\|33 km
lign="center"\|C	align="center"\|27.7° S	align="center"\|60.1° E	align="center"\|11 km
lign="center"\|D	align="center"\|24.0° S	align="center"\|64.4° E	align="center"\|17 km

References

Rev. T. W. Webb, Celestial Objects for Common Telescopes, rev. 6, Dover, 1962, ISBN 0-486-20917-2.

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