Hypatia (crater)

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Hypatia
Hypatia crater 4084 h3.jpg
Coordinates4°18′S 22°36′E / 4.3°S 22.6°E / -4.3; 22.6Coordinates: 4°18′S 22°36′E / 4.3°S 22.6°E / -4.3; 22.6
Diameter41 × 28 km
Depth1.4 km
Colongitude338° at sunrise
EponymHypatia of Alexandria

Hypatia is a lunar impact crater along the northwest edge of Sinus Asperitatis, a bay on the southwest edge of Mare Tranquillitatis. It was named after Egyptian mathematician Hypatia of Alexandria.[1] The nearest crater with an eponym is Alfraganus to the west-southwest. However, farther to the south-southeast, across the lunar mare, is the prominent crater Theophilus.

Hypatia is an asymmetrical formation with a rugged, irregular outer rim cut through in several places by narrow clefts. It is generally longer along an axis running to the north-northwest, with the widest outward bulge occurring on the west side at the northern end. It resembles a merger of several crater formations with a common interior floor. Attached to the exterior rim along the southwest is the satellite crater Hypatia A, a more symmetrical, bowl-shaped crater.

Moltke crater in the center, with Rimae Hypatia behind it (Apollo 10 photo)
Oblique view of Hypatia from Apollo 16

Rimae Hypatia[edit]

About 70 kilometers to the north of Hypatia is a system of linear rilles designated Rimae Hypatia, running about 180 kilometers across the Mare Tranquillitatis, and generally following a course to the south-southeast. The part of the rilles close to the crater Moltke was informally called U.S. 1 by the Apollo 10 and Apollo 11 crews.

Satellite craters[edit]

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

Hypatia Latitude Longitude Diameter
A 4.9° S 22.2° E 16 km
B 4.6° S 21.3° E 5 km
C 0.9° S 20.8° E 15 km
D 3.1° S 22.7° E 6 km
E 0.3° S 20.4° E 6 km
F 4.1° S 21.5° E 8 km
G 2.7° S 23.0° E 5 km
H 4.5° S 24.1° E 5 km
M 5.3° S 23.4° E 28 km
R 1.9° S 21.2° E 4 km

References[edit]

  1. ^ "Hypatia (crater)". Gazetteer of Planetary Nomenclature. USGS Astrogeology Research Program.
  • Andersson, L. E.; Whitaker, E. A. (1982). NASA Catalogue of Lunar Nomenclature. NASA RP-1097.
  • Bussey, B.; Spudis, P. (2004). The Clementine Atlas of the Moon. New York: Cambridge University Press. ISBN 978-0-521-81528-4.
  • Cocks, Elijah E.; Cocks, Josiah C. (1995). Who's Who on the Moon: A Biographical Dictionary of Lunar Nomenclature. Tudor Publishers. ISBN 978-0-936389-27-1.
  • McDowell, Jonathan (July 15, 2007). "Lunar Nomenclature". Jonathan's Space Report. Retrieved 2007-10-24.
  • 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.
  • 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.