Henry Frères (crater)

Henry Frères

Coordinates 23°30′S 58°54′W / 23.5°S 58.9°W / -23.5; -58.9Coordinates: 23°30′S 58°54′W / 23.5°S 58.9°W / -23.5; -58.9
Diameter 42 km
Depth 2.0 km
Colongitude 59° at sunrise
Eponym Paul Henry and
Prosper Henry

Henry Frères is a lunar impact crater that is located in the southwestern part of the near side of the Moon. It lies just to the west-northwest of the crater Henry, a similar diameter feature. To the west-southwest of Henry Frères is the much larger crater Byrgius. Rays from the satellite crater Byrgius A lie across the floor of this formation, forming a wispy trace from west to east.

The outer rim of Henry Frères is nearly circular, with a slight outward bulge along the southwest. When viewed from the Earth, however, this crater has more of an oval shape due to foreshortening. There is some irregularity along the northeast, but the rim is otherwise not significantly eroded or overlain by craters of note. The western part of the interior floor has some uneven areas, and a small crater lies in the northern part of the floor.

Satellite craters

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

Henry
Frères		 Latitude Longitude Diameter
C 24.6° S 59.7° W 37 km
E 24.6° S 60.0° W 4 km
G 22.8° S 58.0° W 4 km
H 22.3° S 56.6° W 6 km
R 21.5° S 57.8° W 7 km
S 20.5° S 56.4° W 6 km

See also

References

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  • Blue, Jennifer (July 25, 2007). "Gazetteer of Planetary Nomenclature". USGS. Retrieved 2007-08-05. 
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  • McDowell, Jonathan (July 15, 2007). "Lunar Nomenclature". Jonathan's Space Report. Retrieved 2007-10-24. 
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  • Price, Fred W. (1988). The Moon Observer's Handbook. Cambridge University Press. ISBN 978-0-521-33500-3. 
  • Rükl, Antonín (1990). Atlas of the Moon. Kalmbach Books. ISBN 978-0-913135-17-4. 
  • Webb, Rev. T. W. (1962). Celestial Objects for Common Telescopes (6th revised ed.). Dover. ISBN 978-0-486-20917-3. 
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  • Wlasuk, Peter T. (2000). Observing the Moon. Springer. ISBN 978-1-85233-193-1. 
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