... Thalassa . Neptune IV - 1989N5 . Thalassa appears to be about 80 kilometers (50 miles) in diameter. ... It orbits Neptune in 7 hours, 30 minutes about 25,200 kilometers (15,700 miles) above the cloud tops. ...
... N ereid ( "NEER ee ed" ) is the outermost of Neptune 's known satellites and the third largest: orbit : 5,513,400 km distance from Neptune diameter : 340 km mass : ? ...
... P roteus ("PROH tee us") is the sixth of Neptune's known satellites and the second largest: orbit : 117,600 km from Neptune diameter : 418 km (436 x 416 x 402) mass : ? ...
... Uranus V . More about Miranda . Open Issues . Express to Neptune. ... get the boost it needed to go on to Neptune and due to the orientation of the whole ... There are no more missions planned to Uranus and Neptune. ...
... in 1977 through the spectacular parting shots in 1989 of Neptune at the outer reaches of the solar system, this pair of gangly, instrument-laden spacecraft explored four planets -- Jupiter , Saturn , Uranus and Neptune -- as well as tens of moons, and the ...
... orbit appears to intersect Neptune's, and for a period of about 20 years Pluto is slightly closer to the sun than Neptune ... When Pluto is "catching up" to Neptune, it gains angular momentum at Neptune's expense. ...
... Kuiper Belt Objects . Hubble Detects Long-Sought Comet Population Beyond Neptune . ... They reside in a region past the orbit of Neptune. ... as being a distant member of our solar system, further away than the planet Neptune ...
... Triton . Neptune I . Triton [TRY-tun] is the largest moon of Neptune, with a diameter of 2,700 kilometers (1,680 miles). ... Triton . Neptune I . Triton [TRY-tun] is the largest moon of Neptune, with a diameter of 2,700 kilometers (1,680 miles). ...