available.

Our editors update and regularly refine this enormous body of information to bring you reliable information. The Voyager imaging team asked for the photo to show Earth’s vulnerability — to illustrate how small, fragile and irreplaceable it is on a cosmic scale. PROTEUS_nomenclature.zip PROTEUS_nomenclature.kmz Contact Us | IAU | USGS Astrogeology Science Center | NASA Simple Cylindrical projection. The largest of the craters, named Pharos, has a diameter of more than 230km! Infoplease is part of the FEN Learning family of educational and reference sites for parents, teachers and students. [1] Proteus is the largest of the regular prograde satellites of Neptune. Simple Cylindrical Map of Proteus Proteus [PROH-tee-us], like all six of Neptune's newly discovered Proteus Order.

[12] Only after Triton's orbit became circularised did some of the rubble disc re-accrete into the present-day satellites. NASA's Lunar Flashlight, a briefcase-sized satellite, or CubeSat, will detect surface ice believed to be at the bottom of craters on the Moon that have never been exposed to sunlight. Contents 436x416x402 km Discovery Year. [4] Saturn's moon Mimas has an ellipsoidal shape despite being slightly less massive than Proteus, perhaps due to the higher temperature near Saturn or tidal heating.

The largest pod contains a moon pool allowing submersibles to dock. being pulled into a spherical shape by its own gravity. This image of Neptune's irregularly-shaped satellite Proteus (1989 N1) taken by Voyager 2 shows a resolution of 8 km (5 miles) per pixel. [2][4], Proteus, like the other inner satellites of Neptune, is unlikely to be an original body that formed with it, more probably having accreted from the rubble that remained after Triton's capture. The Moon is represented at the Assembly via the Neptune Moon Representative (of All Neptune Moons) Law, Government and Civics are based and managed from Triton Moon. Proteus was most likely overlooked because it is so dark and the distance between Earth and Neptune is so great. Humanity's first and (so far) last visit to the outermost giant planet in our solar system was a monumental event for scientists and the public alike. and not all features are necessarily certain given the limited data Topographic Map of Proteus

[7] In the near-infrared part of the spectrum the surface becomes less reflective around 2 μm pointing to a possible presence of complex organic compounds such as hydrocarbons or cyanides.

Bill Dunford. [9], Proteus orbits Neptune at the distance approximately equal to 4.75 equatorial radii of the planet. Stephen P. Synnott and Bradford A. Smithannounced its discovery on July 7, 1989, speaking only of "17 frames taken over 21 days", which gives a discovery date of sometime before June 16. discovered from Earth because it is so close to Neptune that it There are also a number of scarps, grooves and valleys related to large craters. This interpretation stretches the data as far as possible. Voyager 2 Satellite of. The mass was calculated by multiplying the volume from Stooke (1994), "Planetary Satellite Physical Parameters", https://infogalactic.com/w/index.php?title=Proteus_(moon)&oldid=123196, Commons category link is defined as the pagename, Creative Commons Attribution-ShareAlike License, About Infogalactic: the planetary knowledge core. Proteus was discovered from the images taken by Voyager 2 space probe two months before its Neptune flyby in August 1989. Proteus circles Neptune It rotates synchronously with the orbital motion, which means that one face always points to the planet. Quite a few candles have been lit since NASA was born on Oct. 1, 1958. It is dark (albedo 6 The largest pod contains a moon pool allowing submersibles to dock. (Courtesy Phil Stooke). Proteus is one of the largest of Neptune's known moons, although it is not as big as Triton. None Discoverer. shaped and shows no sign of any geological modification. There also will be a partial penumbral eclipse of the Moon. and not all features are necessarily certain given the limited data Meet the women leading two of humankind's two most distant space missions. All rights reserved.

Neptune Distance from Neptune. this map is severely distorted near the poles (top and bottom edges).

cloud tops, and completes one orbit in 26 hours, 54 minutes.

available. 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.

Proteus orbits Neptune at a distance of more than 73,102 mi (117,647 km). The trade in such Speciment became the main Import and export Item traded via the Proteus Xchange. Image Credit: NASA/JPL. prō´tēəs, –tyo͞os [key], in astronomy, one of the natural satellites, or moons, of Neptune Proteus (/ˈproʊtiːəs/;[lower-alpha 5] Greek: Πρωτεύς), also known as Neptune VIII, is the second largest Neptunian moon, and Neptune's largest inner satellite. system -- "as dark as soot" is not too strong

Thomas and Veverka in 1991 reported 440×416×404 km. This is unusual since a smaller moon, Nereid, was discovered 33 years earlier using an Earth-based telescope. the planet in the same Here’s a quick look back at some highlights from six decades of exploration—and a glimpse of what’s ahead.

radius of 200 kilometers (120 miles). Like Saturn's satellite, Proteus (moon) Edit.

Circling the planet in the same direction as Neptune rotates, Proteus remains close to Neptune's equatorial plane. Commander Tanaka Tsuno was the first human to set foot on Proteus on March 5th 2101 (as part of the the Greater Solar System Survey Project : Pandect II 2100 - 2102), Synnott City, the first Settlement was established only six month later at the End of September 2101. Nereid. Naiad, the closest regular moon, is also the second smallest among the inner moons (following the discovery of Hippocamp), whereas Proteus is the largest regular moon and the second largest moon of Neptune. [13], A simulated view of Proteus orbiting Neptune, Animated 3D model of Proteus with a superimposed mesh, From Infogalactic: the planetary knowledge core.

As with all maps, it is the cartographer's interpretation August 25, 1989 from a range of 146,000 kilometers (91,000 miles). The rocket booster segments that will help power NASA’s first Artemis flight test mission around the Moon arrived at KSC.

Infrared images from NASA's Juno spacecraft are providing the first glimpse of Ganymede's icy north pole. Proteus was originally designated S/1989 N 1. [11] In addition to Pharos there are several craters 50–100 km in diameter and many more with diameters less than 50 km. 6 Diameter. It received the temporary designation S/1989 N 1. at a distance of about 92,800 kilometers (57,700 miles) above the None Discoverer. Proteus is about 400 kilometers By signing up for this email, you are agreeing to news, offers, and information from Encyclopaedia Britannica. Proteus (Courtesy A. Tayfun Oner) The apparent graininess The next-generation radiometer is being developed to study the atmospheres of Uranus or Neptune, but could be used to study any atmosphere. (250 miles) in diameter, larger than It wasn't A very specialized Industry of Museum display manufacturers, Natural History artifact collector speiality shops and Artifact dealers has developed around that Museum. Stooke. Proteus is irregularly

Dr. Lori Glaze Need a reference? 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. NASA's next giant leap may be aided by tiny lunar robots that would help scout the lunar surface. NASA Official: Proteus ( / ˈ p r oʊ t iː ə s /; [e] Greek: Πρωτεύς), also known as Neptune VIII, is the second largest Neptunian moon, and Neptune's largest inner satellite.Discovered by Voyager 2 spacecraft in 1989, it is named after Proteus, the shape-changing sea god of Greek mythology.Proteus circles Neptune in a nearly equatorial orbit at the distance of about 4.75 equatorial radii of the planet. Discovered by Voyager 2 spacecraft in 1989, it is named after Proteus, the shape-changing sea god of Greek mythology. With a diameter nearly that of Earth’s Moon, Triton is, by far, Neptune’s largest satellite—more than six times the size of its largest known sibling, Proteus, discovered by Voyager 2 in 1989. significant smear. Learn more about the world with our collection of regional and country maps.