Byrgius (crater)

Byrgius Crater
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Lunar Orbiter 4 image of Byrgius, with Byrgius A at right, and Byrgius D in upper left
LocationThe Moon
Coordinates24°42′S 65°18′W / 24.7°S 65.3°W / -24.7; -65.3
Diameter84.46 km (52.48 mi)[1]
Depth4.6 km (2.9 mi)
Agec. 48 million years
EponymJoost Burgi

Byrgius is a lunar impact crater located in the western part of The Moon, near the limb. As a result, Byrgius appears strongly oval in shape due to foreshortening. It lies northwest of Vieta.[2] To the northwest is the nearly ruined crater Lamarck.[3] The low rim of Byrgius is worn and eroded,[2] with Byrgius A overlying the eastern rim and Byrgius D lying across the northwest. The floor of Byrgius is relatively flat and undistinguished by significant craters.[4]: 92  Byrgius A possesses its own ray system that crosses Byrgius,[5] and extends for over 300 kilometres.[6] This fresh crater has an estimated age of around 48 million years.[7]

This crater is named after Swiss horologist Jost Burgi.[1] His name was introduced into lunar nomenclature in 1651 by Giovanni Ricciolli.[8] The designation was formally adopted by the International Astronomical Union in 1651.[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 Byrgius.[9]

Byrgius[4]: 294  Latitude Longitude Diameter
A 24.5° S 63.7° W 19 km
B 23.9° S 60.8° W 23 km
D 24.1° S 67.1° W 27 km
E 23.5° S 66.2° W 18 km
H 23.7° S 62.4° W 27 km
K 23.0° S 61.8° W 14 km
N 22.3° S 63.1° W 20 km
P 22.6° S 64.1° W 19 km
R 26.5° S 60.7° W 7 km
S 26.2° S 61.4° W 43 km
T 25.1° S 61.5° W 5 km
U 25.8° S 67.2° W 13 km
V 26.0° S 67.8° W 9 km
W 26.1° S 68.5° W 14 km
X 25.7° S 65.4° W 6 km

References

  1. 1 2 3 "Byrgius". Gazetteer of Planetary Nomenclature. USGS Astrogeology Research Program.
  2. 1 2 Moore, Patrick (2001). On the Moon. Sterling Publishing Co. p. 195. ISBN 978-0-304-35469-6.
  3. ↑ "LAC 92" (PDF). Gazeteer of Planetary Nomenclature. Retrieved 2026-06-20.
  4. 1 2 Bussey, B.; Spudis, P. (2004). The Clementine Atlas of the Moon. New York: Cambridge University Press. ISBN 978-0-521-81528-4.
  5. ↑ Chu, Alan; et al. (2012). The Cambridge Photographic Moon Atlas. Cambridge University Press. p. 181. ISBN 978-1-107-01973-7.
  6. ↑ Grego, Peter (2005). The Moon and How to Observe It. Astronomers' Observing Guides Series. London: Springer-Verlag. p. 191. ISBN 1-85233-748-6.
  7. ↑ Raney, R. Keith; et al. (May 2012). "The m-chi decomposition of hybrid dual-polarimetric radar data with application to lunar craters". Journal of Geophysical Research. 117 E00H21. Bibcode:2012JGRE..117.0H21R. doi:10.1029/2011JE003986.
  8. ↑ Whitaker, Ewen A. (1999). Mapping and Naming the Moon. Cambridge University Press. pp. 60, 210. ISBN 978-0-521-62248-6.
  9. ↑ 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 Byrgius (crater) at Wikimedia Commons
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