Pasipha (Moon)

b>Pasiphaë
bgcolor="#ffc0c0" colspan="2" | Discovery
align="left" | Discovered by P. J. Melotte
align="left" | Discovered on January 27, 1908
bgcolor="#ffc0c0" colspan="2" | Orbital characteristics
align="left" | Mean radius 23,624,000 km
align="left" | Eccentricity 0.4090
align="left" | Orbital period 743.63 d
align="left" | Inclination 151.431°
align="left" | Is a satellite of Jupiter
bgcolor="#ffc0c0" colspan="2" | Physical characteristics
align="left" | Mean diameter 60 km
align="left" | Mass 3.0×1017 kg
align="left" | Mean density 2.6 g/cm3
align="left" | Surface gravity 0.022 m/s2
align="left" | Escape velocity 0.036 km/s
align="left" | Rotation period ?
align="left" | Axial tilt
align="left" | Albedo 0.04
align="left" | Surface temp. ~171 K
align="left" | Atmospheric pressure no atmosphere
Pasiphaë (pa-sif'-a-ee) is a moon of Jupiter. It was discovered in 1908 by Philibert Jacques Melotte and later named after the mythological Pasiphae, wife of Minos and mother of the Minotaur from Greek legend. It gives its name to the Pasipha group, irregular retrograde moons orbiting Jupiter at distances ranging between 22.8 and 24.1 Gm, and with inclinations ranging between 144.5 and 158.3. Pasiphaë did not receive its present name until 1975; before then, it was simply known as Jupiter VIII. It was sometimes called "Poseidon". It was first spotted on a plate taken at the Royal Greenwich Observatory on the night of February 28, 1908. Inspection of previous plates found it as far back as January 27. It received the provisional designation 1908 CJ since it was not clear whether it was an asteroid or a moon of Jupiter. The recognition of the latter case came by April 10.

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