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Although Himalia is the sixth-largest moon of Jupiter, it is the fifth-most massive. Amalthea is only a few km bigger, but less massive. Resolved images of Himalia by Cassini have led to a size estimate of 150 km × 120 km (93 mi × 75 mi), while ground-based estimates suggest that Himalia is large, with a diameter around 170 km (110 mi).
The Himalia group is a group of prograde irregular satellites of Jupiter that follow similar orbits to Himalia and are thought to have a common origin. [ 1 ] The known members of the group are (in order of increasing distance from Jupiter):
S/2018 J 2 is part of the Himalia group, a tight cluster of prograde irregular moons of Jupiter that follow similar orbits to Himalia at semi-major axes between 11–12 million km (6.8–7.5 million mi) and inclinations between 26–31°. [3]
Himalia may refer to: Himalia (moon), a moon of Jupiter Himalia group; Himalia (mythology), a nymph from Cyprus in Greek mythology; Himalia Ridge, a ridge on the ...
It belongs to the Himalia group, moons orbiting between 11 and 13 Gm from Jupiter at an inclination of about 28.3°. [12] Its orbital elements are as of January 2000. They are continuously changing due to solar and planetary perturbations.
Pages in category "Himalia group" The following 10 pages are in this category, out of 10 total. ... Himalia (moon) L. Leda (moon) Lysithea (moon) P. Pandia (moon) S ...
The sizes and masses of many of the moons of Jupiter and Saturn are fairly well known due to numerous observations and interactions of the Galileo and Cassini orbiters; however, many of the moons with a radius less than ~100 km, such as Jupiter's Himalia, have far less certain masses. [5]
If the ring (arc) is debris from Himalia, it must have formed quite recently, given the century-scale precession of the Himalian orbit. It is possible that the ring could be debris from the impact of a very small undiscovered moon into Himalia, suggesting that Jupiter might continue to gain and lose small moons through collisions. [34]