Backlund (crater)

Backlund
Apollo 15 image
Coordinates16°00′S 103°00′E / 16.0°S 103.0°E / -16.0; 103.0
Diameter75.46 km (46.89 mi)[1]
DepthUnknown
Colongitude254° at sunrise
EponymOskar Backlund
Lunar Orbiter 2 image

Backlund is a degraded lunar impact crater on the far side of the Moon.[2] It lies beyond the eastern limb, astride the southern rim of the walled plain designated Pasteur, and to the west of the crater Hilbert.[3] Further to the west-southwest is Sklodowska.[4]

The north and south ends of this crater are more worn and eroded than the intervening stretches. Its interior floor is relatively flat, with the usual accompaniment of tiny impact craters marking the surface.[5]: 82  The slightly darkened floor surface suggests it may include cryptomare.[3] The floor displays a geochemical anomaly in the form of low abundances of aluminium and magnesium.[6][7]

The name "Backlund" honours the Swedish-born Russian astronomer Oskar Andreevich Baklund (Russian: Оскар Андреевич Баклунд, 1846-1916).[8][9] Its designation was formally adopted by the International Astronomical Union in 1970.[1]

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 Backlund.[10]

Backlund[5]: 292  Latitude Longitude Diameter
E 15.5° S 105.3° E 15 km
L 18.2° S 103.5° E 56 km
N 17.8° S 102.8° E 18 km
P 18.9° S 102.0° E 27 km
R 16.8° S 101.5° E 23 km
S 16.8° S 100.6° E 21 km

See also

References

  1. 1 2 "Backlund". Gazetteer of Planetary Nomenclature. USGS Astrogeology Research Program.
  2. ↑ Moore, Patrick (2000). The Data Book of Astronomy. CRC Press. p. 66. ISBN 978-1-4200-3344-1.
  3. 1 2 Byrne, Charles J. (2008). The Far Side of the Moon. Springer. pp. 23, 35. ISBN 978-1-4899-8806-5.
  4. ↑ This crater is located astride two maps:
    • "LAC 82" (PDF). Gazeteer of Planetary Nomenclature. Retrieved 2026-06-09.
    • "LAC 100" (PDF). Gazeteer of Planetary Nomenclature. Retrieved 2026-06-09.
  5. 1 2 Bussey, B.; Spudis, P. (2004). The Clementine Atlas of the Moon. New York: Cambridge University Press. ISBN 978-0-521-81528-4.
  6. ↑ Hawke, B. R.; et al. (June 1985). "The origin of selected lunar geochemical anomalies Implications for early volcanism and the formation of light plains". Earth, Moon and Planets (ISSN 0167-9295). 32: 257–273. Bibcode:1985EM&P...32..257H. doi:10.1007/BF00054216.
  7. ↑ Clark, Pamela E.; Hawke, B. R. (May 1991). "The Lunar Farside: The Nature of Highlands East of Mare Smythii". Earth, Moon, and Planets. 53 (2): 93–107. Bibcode:1991EM&P...53...93C. doi:10.1007/BF00057425.
  8. ↑ Moore, Patrick (2019). "The Moon". The Data Book of Astronomy. Boca Raton, Florida: CRC Press. p. 66. ISBN 9781420033441. Retrieved 25 October 2024. Backlund [...] Oscar, Russian astronomer 1846-1916
  9. ↑ Menzel, D. H.; et al. (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. S2CID 122125855.
  10. ↑ 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.

Sources

  • 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.
  • Wlasuk, Peter T. (2000). Observing the Moon. Springer. ISBN 978-1-85233-193-1.
  • Wikimedia Commons logo Media related to Backlund (crater) at Wikimedia Commons
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