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Neptune's mass of 1.0243 × 10 26 kg [8] is intermediate between Earth and the larger gas giants: it is 17 times that of Earth but just 1/19th that of Jupiter. [g] Its gravity at 1 bar is 11.15 m/s 2, 1.14 times the surface gravity of Earth, [71] and surpassed only by Jupiter. [72] Neptune's equatorial radius of 24,764 km [11] is nearly four ...
Outline of Neptune. The following outline is provided as an overview of and topical guide to Neptune: Neptune – eighth and farthest known planet from the Sun in the Solar System. In the Solar System, it is the fourth-largest planet by diameter, the third-most-massive planet, and the densest giant planet. Neptune is 17 times the mass of Earth ...
Neptune VIII: 210 ± 7: 44: ≈ 1.3: moon of Neptune ... This list contains a selection of objects 50 and 99 km in radius (100 km to 199 km in average diameter).
Neptune, the smallest of its four gas planets, has a diameter of about 30,600 miles (49,250 km), roughly four times that of Earth. The newly discovered sub-Neptunes range from 1.9 to 2.9 times ...
an object of diameter 725.27 km at a distance of 1 astronomical unit (AU) an object of diameter 45 866 916 km at 1 light-year; an object of diameter 1 AU (149 597 871 km) at a distance of 1 parsec (pc) Thus, the angular diameter of Earth's orbit around the Sun as viewed from a distance of 1 pc is 2″, as 1 AU is the mean radius of Earth's orbit.
Laomedeia / ˌleɪəməˈdiːə /, also known as Neptune XII, is a prograde irregular satellite of Neptune. It was discovered by Matthew J. Holman, et al. on August 13, 2002. [6] Before the announcement of its name on February 3, 2007 (IAUC 8802), it was known as S/2002 N 3. It orbits Neptune at a distance of about 23,571,000 km and is about 42 ...
Ground observations of Varuna's thermal emission from 2000 to 2005 yielded large diameter estimates ranging from 900 km (560 mi) to 1,060 km (660 mi), making it comparable to the size of Ceres. [43] Contrary to the ground-based estimates, space-based thermal observations from the Spitzer Space Telescope provided a smaller diameter range of 450 ...
The surface of Proteus is heavily cratered and shows a number of linear features. Its largest crater, Pharos, is more than 150 km in diameter. [6] [23] All of Neptune's inner moons are dark objects: their geometric albedo ranges from 7 to 10%. [25]