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These candidates were mainly small and faint, down to magnitude of 25.7 or above 0.8 km (0.5 mi) in diameter. From the number of candidate moons detected within a sky area of one square degree, the team extrapolated that the population of retrograde Jovian moons brighter than magnitude 25.7 is around 600 +600 −300 within a factor of 2.
It is an irregular moon with a retrograde orbit. The discovery of Jupiter LVI brought the Jovian satellite count to 67. It is one of the outer retrograde swarm of objects orbiting Jupiter and belongs to the Pasiphae group. [4] The moon was lost following its discovery in 2011.
This group of retrograde-orbiting moons has rather indistinct borders, averaging 21.276 million km from Jupiter with an average inclination of 149 degrees. [207] Carme group: A tightly clustered group of retrograde-orbiting moons that averages 23.404 million km from Jupiter with an average inclination of 165 degrees [207] Pasiphae group
The third and latest flyby, which took place on Dec. 27, 2024, brought the Juno spacecraft within about 46,200 miles of the moon. Using an instrument known as the Jovian Infrared Auroral Mapper ...
Retrograde orbits are more stable than prograde (stable retrograde orbits can be found further from the planet) Increasing eccentricity results in smaller pericenters and large apocenters. The satellites enter the zone of the regular (larger) moons and are lost or ejected via collision and close encounters.
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The retrograde moons are grouped into the Carme, Ananke and Pasiphae groups. Saturn has 146 moons with known orbits; 66 of them have received permanent designations, and 63 have been named. Most of them are quite small. Seven moons are large enough to be in hydrostatic equilibrium, including Titan, the second
Jupiter’s prograde moon Valetudo lies in a region where most other moons have retrograde orbits. Basically, it’s going the wrong way on a one-way street. Experts say this spells one thing ...