Asgard (crater)
Appearance
(Redirected from Njord (crater))
This article relies largely or entirely on a single source. (March 2021) |
Location | Callisto |
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Coordinates | 32°12′N 139°54′E / 32.20°N 139.90°E |
Diameter | 1,400 km (870 mi)[1] |
Eponym | Asgard |
Asgard is the second largest multi-ringed basin (large impact crater) on Jupiter's moon Callisto.[2] It is named after Asgard, the realm of the gods in Norse mythology. The central part of Asgard is dominated by the domed Doh impact crater.
A smaller multi-ring structure is superposed on the northern part of Asgard. It is called Utgard (also from Norse mythology) and measures around 600 km (370 mi) in diameter.[2] Utgard is the fourth largest multi-ring feature on Callisto. A substantial part of the central region of Utgard is covered with deposits from the relatively young Burr crater.
References
[edit]- ^ Asgard, Gazetteer of Planetary Nomenclature, International Astronomical Union (IAU) Working Group for Planetary System Nomenclature (WGPSN), accessed 13 November 2022
- ^ a b Greeley, R.; Klemaszewski, J. E.; Wagner, L.; et al. (2000). "Galileo views of the geology of Callisto". Planetary and Space Science. 48 (9): 829–853. Bibcode:2000P&SS...48..829G. doi:10.1016/S0032-0633(00)00050-7.