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Milichius is a bowl-shaped lunar impact crater that is located in the northern part of the Mare Insularum. To the southeast is the slightly larger Hortensius, a similar formation. Further away due east of Milichius is the prominent and well-known Copernicus.

Milichius crater Milichius Pi 4133 h2.jpg
Lunar Orbiter 4 image of Milichius crater (right) and Milichius Pi lunar dome(left)
(horizontal rows of spots are blemishes on original)
Coordinates10°00′N 30°12′W / 10.0°N 30.2°W / 10.0; -30.2Coordinates: 10°00′N 30°12′W / 10.0°N 30.2°W / 10.0; -30.2
Diameter13 km
Depth2.5 km
Colongitude30° at sunrise
EponymJacob Milich
Oblique view from Apollo 12 (facing north)
Oblique view of Milichius A crater and part of Milichius Rille, also from Apollo 12

The crater is named after 16th century German doctor, mathematician and astronomer Jacob Milich, Latinized as Milichius.[1]

Just to the west is a typical lunar dome designated Milichius Pi (π) that has a tiny craterlet at the peak. The narrow and sinuous Rima Milichius rille is located farther to the southwest, and follows a course running roughly north–south for 100 kilometers.

Satellite cratersEdit

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

Milichius Latitude Longitude Diameter
A 9.3° N 32.0° W 9 km
C 11.2° N 29.4° W 3 km
D 8.0° N 28.2° W 4 km
E 10.7° N 28.1° W 3 km
K 8.5° N 30.3° W 4 km


  1. ^ "Milichius (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.

External linksEdit