Neptunian System Imaging |
Neptunian System Imaging |
Oct 11 2010, 09:30 AM
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Member Group: Members Posts: 796 Joined: 27-February 08 From: Heart of Europe Member No.: 4057 |
Neptune from Voyager 2. Color is from images with CH4JS, green and orange filter.
Shadows of three moons are visible. Second image is with possible interpretation. -------------------- |
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Feb 21 2019, 02:21 PM
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#2
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Member Group: Members Posts: 241 Joined: 16-May 06 From: Geneva, Switzerland Member No.: 773 |
Nice new article in Nature about the inner moons of Neptune
The latest discovered inner moon of Neptune has now a name : Hippocamp https://www.skyandtelescope.com/astronomy-n...campaign=buffer From the paper: "Hippocamp orbits close to Proteus, the outermost and largest of these moons, and the orbital semimajor axes of the two moons differ by only ten per cent. Proteus has migrated outwards because of tidal interactions with Neptune. Our results suggest that Hippocamp is probably an ancient fragment of Proteus, providing further support for the hypothesis that the inner Neptune system has been shaped by numerous impacts." Also, Naiad hadn't been seen since Voyager 2's flyby. Showlater's team did spot it — but in a spot diametrically opposite where it should have been, based on the presumed orbit. Thalassa (92 km) proved less challenging but was still displaced 19° from its predicted orbital longitude. The team also reports that no other moons larger than 24 km likely lie within 200,000 km of Neptune or larger than 20 km farther out. The ring/inner moons system of Uranus was known to be a very dynamic system. The same seems to be true with Neptune ring/inner moons system. Regards, Marc. |
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Lo-Fi Version | Time is now: 27th September 2024 - 04:56 AM |
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