Proteus circles Neptune in a nearly equatorial orbit at the distance of about 4.75 equatorial radii of the planet. Proteus is the second-largest moon of Neptune and is the largest of the regular prograde moons of Neptune. Proteus is one of the largest of Neptune's known moons, although it is not as big as Triton. Proteus is one of the darkest objects in the solar system. However, it was not found by Earth-based telescopes because it is so close to the planet that it is lost in the glare of reflected sunlight. Proteus is one of the darkest objects in the solar system. Proteus is about 400 kilometers (250 miles) in diameter, larger than Nereid. However, it was not found by Earth -based telescopes because it is so close to the planet that it is lost in the glare of reflected sunlight. Proteus is the second-largest moon of Neptune and is the largest of the regular prograde moons of Neptune. Proteus is more than 400 kilometres in diameter, bigger than Nereid, another moon of Neptune. The largest crater, Pharos, has a diameter from 230 to 260 km. Proteus is heavily cratered, showing no sign of any geological modification. However, it was not found by Earth-based telescopes because it is so close to the planet that it is lost in the glare of reflected sunlight. It wasn't discovered from Earth because it is so close to Neptune that it is lost in the glare of reflected sunlight. Its surface is dark, neutral in … Proteus was a sea god who could change his shape at will.
Despite being more than 400 km in diameter Proteus has a somewhat irregular shape with several slightly concave facets and relief as high as 20 km. It was not discovered by Earth-based telescopes because Proteus orbits so close to Neptune that it is lost in the glare of reflected sunlight. Proteus is one of the darkest objects in the solar system. It was not discovered by Earth-based telescopes because Proteus orbits so close to Neptune that it is lost in the glare of reflected sunlight. It is about 420 km (260 mi) in diameter, larger than Nereid, Neptune's third-largest moon. 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 is more than 400 kilometres in diameter, bigger than Nereid, another moon of Neptune. [11] Proteus circles Neptune at a distance of about 92,800 kilometers (57,700 miles) above the cloud tops, and completes one orbit in 26 hours, 54 minutes.
The crater has a central dome on its floor a few kilometres high. It is about 420 km (260 mi) in diameter, larger than Nereid, Neptune's third-largest moon. However, it was not found by Earth -based telescopes because it is so close to the planet that it is lost in the glare of reflected sunlight. Discovered in 1989 by Voyager 2. Proteus is one of the darkest objects in the solar system. This site is maintained by the Planetary Science Communications team at NASA’s Jet Propulsion Laboratory and Goddard Space Flight Center for NASA’s Science Mission Directorate. Its depth is about 10–15 km. Proteus circles Neptune at a distance of about 92,800 kilometers (57,700 miles) above the cloud tops, and completes one orbit in 26 hours, 54 minutes.
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