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Voyager 1 image of Valhalla, a multi-ring impact structure 3,800 km in diameter. The largest impact features on Callisto's surface are multi-ring basins. [13] [61] Two are enormous. Valhalla is the largest, with a bright central region 600 km in diameter, and rings extending as far as 1,800 km from the center (see figure). [63]
Name Coordinates Diameter (km) Approval Date Namesake Refs Eikin Catena: 223.10: 1997: Eikin: WGPSN: Fimbulthul Catena: 287: 1997: Fimbulthul: WGPSN: Geirvimul Catena
Heimdall is one of the largest known impact craters on Jupiter's Galilean satellite Callisto, with a diameter of 210 km. It is located near the Callistoan south pole at 63°30′S 3°00′E / 63.5°S 3°E / -63.5; 3 ( Heimdall
Valhalla is the largest multi-ring basin on Callisto and in the Solar System (with diameter up to 3,800 km). [4] It was discovered by the Voyager probes in 1979–80 and is located on the leading hemisphere of Callisto, in its Jupiter facing quadrant slightly to the north of the equator (at about 18°N latitude and 57°W longitude).
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 ...
But today, the prairie dog’s range has shrunk to 5% of the size it was before the settlers moved across the U.S. Furthermore, two of the five species of prairie dogs are endangered: Utah and ...
This is a list of named craters on Callisto, one of the many moons of Jupiter, ... Diameter (km) Approval Year Eponym Ref Adal 41.7: 1979: Adal ...
They're now 15-1 and will finish the season no worse than tied for the best record in football. The last-second wins are thing of the past. They beat the Browns, 21-7 in Week 15, the Texans 27-19 ...