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☆☆☆☆☆Pluto has five known moons:
- Charon, the largest one, Charon was discovered in 1978.
- Hydra, very small
- Nix, very small, and two more-newly discovered small moons. and Nix/Hydra were identified in 2005.
- Kerberos (provisionally named P4 or S/2011-134340)
- Styx (S/2012-134340). On July 11, 2012, it was announced that a team of astronomers, using NASA's Hubble Space Telescope, discovered a fifth moon orbiting Pluto. The moon is provisionally designated as S/2012 (134340) 1. The moon was discovered by astronomers using nine sets of images taken by the Wide Field Camera 3 fitted to the Hubble Telescope between June 26, 2012 and July 9, 2012. It is estimated to be an irregular shape and 6 to 15 miles across.
The largest moon, Charon, is proportionally larger compared to its primary than any other satellite of a known planet or dwarf planet in the solar system. In fact there is some discussion as to whether we should consider this a "binary system" instead of a dwarf planet with moons because Charon is so massive that the barycenter (center of gravity around which the bodies rotate) of the Pluto-Charon group is not inside either of those bodies.
The aspect of the gas giants that has the biggest effect on their rings and satellites is their gravity.
elliptical
Jupiter Neptune
The planet that most extrasolar planets resembles Jupiter.
Jupiter(apex)
Most of the confirmed Exoplanets are larger gaseous planets with large masses. These are easier to detect and confirm due to their size. They most resemble Jupiter, although many are thought to be much larger than our largest planet.
Planets are considerably smaller than their parent stars, also they emit no light and are very close to the star. With all this combined, separating between the two with a telescope is very difficult.
light from the they orbit makes it difficult to locate extrasolar planets with telescope
