Blazhko (crater)

Blazhko
LRO mosaic
Coordinates31°36′N 148°00′W / 31.6°N 148.0°W / 31.6; -148.0
Diameter51.11 km (31.76 mi)[1]
DepthUnknown
Colongitude148° at sunrise
EponymSergei N. Blazhko
Clementine mosaic with Blazhko at center

Blazhko is a lunar impact crater that is located in the northern hemisphere on the far side of the Moon.[2] It lies to the northwest of the crater Joule, and to the south of Gadomski.[3] The fresh, bright crater Wargo is to the south, on the rim of Joule T.[4]

This is a large fresh crater that has covered up some older impacts in the vicinity.[5] The rim is generally circular, but with some irregularities. There is a small outward bulge in the rim to the east-southeast, and an inward bulge on the opposite face. There is also a slight outward bulge along the north rim. The satellite crater Blazhko F is attached to the exterior of the east rim. The inner wall along the northeast face is striated with terraces. The interior floor is relatively level.[6]: 34, 52 

This crater was named after Russian astronomer Sergey Blazhko (1870–1956).[7] The designation was officially 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 Blazkho.[8]

Blazkho[6]: 293  Latitude Longitude Diameter
D 33.0° N 145.2° W 34 km
F 31.4° N 146.7° W 34 km
L 29.3° N 147.6° W 44 km
R 30.0° N 149.8° W 53 km

References

  1. 1 2 "Blazhko". 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. ↑ Byrne, Charles J. (2008). The Far Side of the Moon. Springer. p. 130. ISBN 978-1-4899-8806-5.
  4. ↑ The crater lies astride two maps:
    • "LAC 34" (PDF). Gazeteer of Planetary Nomenclature. Retrieved 2026-06-11.
    • "LAC 52" (PDF). Gazeteer of Planetary Nomenclature. Retrieved 2026-06-11.
  5. ↑ Xiao, Zhiyong; Werner, Stephanie C. (December 2015). "Size-frequency distribution of crater populations in equilibrium on the Moon". Journal of Geophysical Research: Planets. 120 (12): 2277–2292. Bibcode:2015JGRE..120.2277X. doi:10.1002/2015JE004860.
  6. 1 2 Bussey, B.; Spudis, P. (2004). The Clementine Atlas of the Moon. New York: Cambridge University Press. ISBN 978-0-521-81528-4.
  7. ↑ 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.
  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.

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.
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