Proteus
Neptune VIII
Proteus ("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: ?
Proteus (astronomy)
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Proteus
Related Category: Astronomy: General
(pr´ts, -tys), in astronomy, one of the natural satellites, or moons, of Neptune.
Proteus
Neptune VIII - 1989N1
Proteus [PROH-tee-us], like all six of Neptune's newly discovered small satellites, is one of the darkest objects in the solar system -- "as dark as soot" is not too strong of a description.
Proteus is more than 400 kilometres in diameter, larger than Nereid, another moon of Neptune. However, it was not discovered by Earth-based telescopes because it is so close to the planet that it is lost in the glare of reflected sunlight.
Proteus is a genus of Gram-negative Proteobacteria....
, and Serratia
Serratia ...
Proteus, the second-largest moon of Neptune, is a bare chunk of dark rock orbiting close to the giant planet. Proteus was discovered in August 1989 by the Voyager 2 spacecraft, which beamed back this picture. [NASA/JPL]
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Proteus was a god of the sea, capable of changing his shape.
Triton
Triton is by far the largest of Neptune's moons. Despite its large size, Triton probably did not form around Neptune. Scientists believe that Triton was captured by Neptune long ago.
Proteus is the second-largest moon in orbit around Neptune. It is so close to the planet that Earth-bound telescopes cannot see it.
Proteus
The "Moon": A Ridiculous Liberal Myth
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Proteus -- In Greek mythology, the son of Poseidon. Personification of the shifting winds and moods of the sea.
Phobos -- In Greek mythology, a son of Ares (Mars) who, with brother Deimos, was a constant companion to his father.
PROTEUS
Proteus is the second-largest moon of . It was discovered using NASA's Voyager 2 mission in 1989. It orbits 117,650 km from the center of Neptune and is about 218 x 208 x 201 km in size.
Proteus (NASA Thesaurus) A natural satellite of Neptune, orbiting at a mean distance of 117,600 kilometers. proton (NASA Thesaurus / NASA SP-7, 1965) A positively charged subatomic particle having a mass of 1.
Five of the six recently discovered satellites (all but Proteus) orbit Neptune in less time than the 16.11-hour rotational period of the planet.
Of these, the irregularly shaped Proteus is notable for being as large as a body of its density can be without being pulled into a spherical shape by its own gravity.
Proteus
Triton
Nereid
Neptune is the eighth or, occasionally, the ninth planet from the Sun due to Pluto's eccentric orbit, and the outermost gas giant in our solar system.
* THE ECONOMIST reports that Swiss pharmaceuticals giant Novartis recently obtained licenses from a California startup company named Proteus Biomedical for "smart pill" technology.
NEPTUNE N_RINGS TRITON NEREID PROTEUS LARISSA or NEPTUNE N_RINGS TRITON NEREID PROTEUS LARISSA or NEPTUNE N_RINGS TRITON NEREID PROTEUS LARISSA
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Voyager 2 discovered six new ones, which are named Naiad, Galatea, Thalassa, Larissa, Proteus, and Despina. Since then, five more were discovered but have yet to be named. Either way, this gives us a grand total of 13 satellites.
Neptune's moons
Size Mean distance from Neptune
Triton 2,720km 353,000km
Proteus 400km 92,000km
Larissa 190km 48,800km
Galatea 180km 37,200km
Nereid 169km 5,560,000km
Despina 150km 27,700km
Thalassa 80km 25,200km
Naiad 54km 23,200km ...
Neptune has eight known moons: Triton, Thalassa, Naiad, Despina, Galatea, Larissa, Proteus and Nereid.
Voyager 2 spacecraft visited Neptune on August 25, 1989.
Neptune was named after the Roman god of the sea.
Triton, Nereid, Naiad, Thalassa, Despina, Galatea, Larissa, Proteus, plus others yet to receive names
Pluto
1 ...
So far, eight moons have been discovered orbiting Neptune. They are (from nearest the planet to furthest): Naiad, Thalassa, Despina, Galatea, Larissa, Proteus, Triton and Nereid.
 See also: Neptune, Earth, Solar, Solar System, Orbit
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