Isidorus (crater)

Isidorus

Apollo 16 image
Coordinates 8°00′S 33°30′E / 8.0°S 33.5°E / -8.0; 33.5Coordinates: 8°00′S 33°30′E / 8.0°S 33.5°E / -8.0; 33.5
Diameter 42 km
Depth 1.6 km
Colongitude 327° at sunrise
Eponym St. Isidore
Oblique view facing west of Capella (below center) and Isidorus (above center). The large crater on the horizon is Theophilus. This shot was taken from the Apollo 11 Lunar Module, Eagle.

Isidorus is a lunar crater that is located to the north of the Mare Nectaris, on the eastern half of the Moon's near side. It forms a pair with the slightly larger Capella, which is attached to the east-northeastern rim. To the west-southwest across the lunar mare are Mädler and the prominent Theophilus.

The rim of Isidorus is circular and somewhat eroded, with several tiny craterlets lying across the northern rim. The interior floor has been resurfaced by lava and is generally level, although it is marked by the small, bowl-shaped crater Isidorus A along the western rim. There is a tiny remnant of a craterlet attached to the northern rim of the latter formation.

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 Isidorus.

Isidorus Latitude Longitude Diameter
A 8.0° S 33.2° E 10 km
B 4.5° S 33.0° E 30 km
C 4.8° S 31.7° E 9 km
D 4.2° S 34.1° E 15 km
E 5.3° S 32.6° E 15 km
F 8.7° S 34.2° E 20 km
G 6.4° S 31.6° E 7 km
H 3.9° S 32.6° E 7 km
K 8.9° S 33.3° E 7 km
U 7.9° S 31.5° E 6 km
V 8.9° S 30.8° E 4 km
W 9.4° S 32.3° E 4 km

References

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  • McDowell, Jonathan (July 15, 2007). "Lunar Nomenclature". Jonathan's Space Report. Retrieved 2007-10-24. 
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  • Moore, Patrick (2001). On the Moon. Sterling Publishing Co. ISBN 978-0-304-35469-6. 
  • 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. 
  • 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. 
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