Charon

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Charon,

in astronomy, the natural satellite, or moon, of PlutoPluto,
in astronomy, a dwarf planet and the first Kuiper belt, or transneptunian, object (see comet) to be discovered (1930) by astronomers. Pluto has an elliptical orbit usually lying beyond that of Neptune.
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Charon,

in Greek mythology: see HadesHades
, in Greek and Roman religion and mythology. 1 The ruler of the underworld: see Pluto. 2 The world of the dead, ruled by Pluto and Persephone, located either underground or in the far west beyond the inhabited regions.
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Charon

(kair -ŏn, shar -ŏn) The only confirmed satellite of Pluto, discovered in 1978 by James W. Christy of the US Naval Observatory. The average distance between Charon and Pluto is less than 20 000 km. Charon is in synchronous rotation with Pluto (orbital period 6.39 days) and with a diameter of about 1190 km is more than half its size. It is, however, only one-tenth of Pluto's mass. See Table 2, backmatter.

Charon

[′ka·rən]
(astronomy)
The only known satellite of Pluto, with an orbital period of 6.387 days, distance from Pluto of approximately 19,600 kilometers, and diameter of approximately 1250 kilometers.

Charon

ferries dead across the river Styx. [Gk. and Rom. Myth.: Hall, 147; Ital. Lit.: Inferno.]