Astrology.vn - The largest planet in the solar family: larger in fact than all other planets combined. Yet it is exceeded in brightness by Venus, because of her greater proximity to the Earth. To the Greeks, known as Zeus; also associated with Marduk, one of the gods of the Pantheon; known to the Hindus as Brahmanaspati.

Jupiter has 11 satellites. The first four were among the earliest discoveries of Galileo, and can be seen with the aid of a field glass.

Statistics concerning the first five are as follows:

...................Period........Distance........Diameter

....Io.............1d.8...........262,000.........2109

....Europa.........3d.6...........................1865

....Ganymede.......7d.2...........................3273

....Callesta......16d.7.........1,000,000.........3142

....V.............11h.57m.........112,600..........100 est.

....VI.............................................100

....VII.............................................40

The dates of discovery are V, 1892; VI, 1904; VII, 1905; VIII, 1908; IX, 1914; X, 1938; XI, 1938. The orbits of the outer four are so far distant from the planet that their motion is affected by perturbations due to the Sun's attraction, to such an extent that they can hardly be said to have an orbit.

No. IX has an orbital inclination in excess of 90°, to that of Jupiter's orbit. No. VIII has an orbital eccentricity of 0.38, whereby its distance varies from 9 to 20 million miles.

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