";s:4:"text";s:4424:"Two of Saturn’s moons (Janus The discovery of Larissa is usually credited to Harold Reitsma in 1982. Proteus is one of the darkest objects in our solar system. Neptune has 14 identified moons, as at September 2013, named for minor water deities in Greek mythology. Triton, the largest moon of Neptune, has a retrograde orbit (which means Triton orbits or moves the opposite way from how Neptune spins).. Two moons, Psamathe (discovered in 2002) and Neso (discovered in 2003), are unusual because they have the largest orbits for any moons discovered in the solar system so far. Put another way, Earth weighs 81 times more than the moon. The first of Saturn’s moons to be observed was Titan in 1655 by Christiaan Huygens, another moon was not found until 1671 when Giovanni Domenico Cassini discovered Iapetus. The Moon's diameter is over 50% greater than that of the dwarf planet Pluto.
Neptune VII - 1989N2, 1981N1 Larissa [LA-ree-suh] is only about 48,800 kilometers (30,300 miles) from Neptune's clouds, and circles the planet in 13 hours, 18 minutes. It wasn't discovered from Earth because it is so close to Neptune that it is lost in the glare of reflected sunlight. Charon is the Largest moon of Pluto with a diameter of 1207 km it is also the largest moon proportionally compared to its host planet. The moon's … As of October 2008, there are 213 known natural moons orbiting planets in our Solar System. Larissa. Larissa. And the circumference of the Moon in miles is 6,783 miles. Neptune has moons which have unusual orbits. [/caption] The equatorial circumference of the Moon is 10,916 km. Each of the myriad particles that constitute the rings can be considered a tiny moon in its own orbit. The best measurement of Nereid's diameter comes from images taken by Voyager 2 in its August 1989 flyby of Neptune: 170 kilometers, plus or minus 25 (106 +/- 16 miles). The as yet unnamed fourteenth moon, currently identified as S/2004 N 1, is thought to measure no more than 16–20 km in diameter. Triton, the largest at more than 2,700 km in diameter, and the one first discovered soon after Neptune itself on October 10th 1846 by the English astronomer William Lassell, orbits in a Retrograde Orbit, in the opposite direction to most of the other moons.
Larissa is irregularly shaped and appears to have a heavily cratered surface. The moon's mass is 7.35 x 10 22 kg, about 1.2 percent of Earth's mass. Of all the moons of the eight planets, Earth's moon is by far the largest relative to its planet, with a diameter of 3476 km and hence a ratio to Earth's diameter of 0.2764. Larissa [LA-ree-suh] is the fifth known moon of Neptune. Larissa : Larissa of irregular shape, is the fifth moon of Neptune. Its diameter is about 190 kilometers (120 miles). ←==Hydra, Nix and P4== Hydra is the second largest moon of Pluto at a diameter of 61-150 km . Larissa is irregularly shaped and appears to have a heavily cratered surface. In keeping … It is irregularly shaped and shows no sign of any geological modification. 205 moons orbit the "full-size" planets (Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune), while 8 moons orbit the smaller " dwarf planets " ( Ceres, Pluto, Haumea, Makemake, and Eris ). By comparison, the next largest moon relative to a major planet (Triton of Neptune) has a diameter ratio of just .0546.
Notable Moons – Triton, Nereid & Proteus. The Earth has an equatorial diameter of 12756.2 km The Moon has an equatorial diameter of 3476.28 km Gives about 3.6695 Moons
Being roughly half of Pluto's size Pluto and Charon orbit each other. It was named after a daughter of Pelasgua in Greek mythology.