Borman (crater)

Borman
LRO image of Borman
Coordinates38°48′S 147°42′W / 38.8°S 147.7°W / -38.8; -147.7
Diameter50.72 km (31.52 mi)[1]
DepthUnknown
Colongitude212° at sunrise
FormationEarly Imbrian[2]
EponymFrank Borman
Oblique Lunar Orbiter 5 image

Borman is a lunar impact crater that is located in the southern hemisphere on the far side of the Moon.[3] It lies across the southeast section of the mountainous inner ring, within the walled basin named Apollo.[4]

This formation dates to the Early Imbrian epoch of the lunar geologic timescale.[2] The rim of Borman remains sharp-edged, although a smaller crater lies across its northwestern rim. The interior is rough but relatively flat,[5]: 121  with a pair of ridges around the midpoint. The spectra of the central peak fits an olivine-bearing norite mineralogy, which originated from a depth of 5.0 to 7.6 km.[6] Borman L is an older and much more worn crater that is attached to the southern rim of Borman.[5]: 121 

Borman crater is named after the American astronaut Frank Borman (b. 1928).[1] In 1968, Borman and his Apollo 8 crewmates became the first humans to orbit the Moon. Two nearby craters are named after the other crew members, William Anders (Anders crater) and Jim Lovell (Lovell crater).[7]

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 Borman.[8]

Borman[5]: 293–294  Latitude Longitude Diameter
L 40.1° S 147.2° W 28 km
V 37.4° S 150.6° W 28 km

The following craters have been renamed by the IAU.[9]

References

  1. 1 2 "Borman". Gazetteer of Planetary Nomenclature. USGS Astrogeology Research Program.
  2. 1 2 Tompkins, Stefanie; Pieters, Carle M. (January 1999). "Mineralogy of the lunar crust: Results from Clementine". Meteoritics & Planetary Science. 34 (1): 25–41. Bibcode:1999M&PS...34...25T. doi:10.1111/j.1945-5100.1999.tb01729.x.
  3. ↑ Moore, Patrick (2000). The Data Book of Astronomy. CRC Press. p. 66. ISBN 978-1-4200-3344-1.
  4. ↑ Byrne, Charles J. (2008). The Far Side of the Moon. Springer. p. 66. ISBN 978-1-4899-8806-5.
  5. 1 2 3 Bussey, B.; Spudis, P. (2004). The Clementine Atlas of the Moon. New York: Cambridge University Press. ISBN 978-0-521-81528-4.
  6. ↑ Cahill, J. T. S.; et al. (September 2009). "Compositional variations of the lunar crust: Results from radiative transfer modeling of central peak spectra". Journal of Geophysical Research. 114 (E9) E09001. Bibcode:2009JGRE..114.9001C. doi:10.1029/2008JE003282.
  7. ↑ McElheny, Victor K. (August 15, 1970). "Armstrong, Aldrin, Collins on Moon again–as Names". The Boston Globe. Boston, Massachusetts. p. 16. Retrieved 2026-06-14 – via Newspapers.com.
  8. ↑ Grego, P. (2015). "Satellite Crater". In Hargitai, H.; Kereszturi, Á. (eds.). Encyclopedia of Planetary Landforms. New York, NY: Springer. doi:10.1007/978-1-4614-3134-3_328.
  9. ↑ Masursky, H.; et al. (1988). "Working Group for Planetary System Nomenclature:(Committee of the Executive Committee)". Transactions of the International Astronomical Union. 20 (1): 703–708. Retrieved 2026-06-14.
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