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| − | + | '''Adrastea''' is the second known natural satellite of [[Jupiter]] by distance and the smallest inner moon. Discovered by photos from [[Voyager 2]] in 1979, it became the first moon discovered by an interplanetary spacecraft, rather than from [[Earth]].<br> | |
| − | + | It was known as Jupiter XV until it was named after Adasteia, the foster mother of the Greek god Zeus.<br> | |
| − | + | Adrastea is one of the few moons in the [[Solar System]] that orbits its planet in less than one of the planet's days. Located at the edge of Jupiter's main ring, it is thought that it contributes material to that ring. | |
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| − | + | '''DISCOVERY'''<br> | |
| − | < | + | Discovered by<br> Voyager 2<br>David C Jewitt<br>G Edward Danielson<br> |
| − | Adrastea | + | Discovery date 8 July 1979<br> |
| − | + | DESIGNATIONS<br> Adrastea<br>Jupiter XV<br>S/1979 J1<br> | |
| − | < | + | ORBITAL CHARACTERISTICS<br> |
| + | [[Parent body]] Jupiter<br> | ||
| + | [[Mean Orbital Radius]] 129000 km<br> | ||
| + | [[Eccentricity]] 0.0015<br> | ||
| + | [[Orbital period]] 7h9.5m (0.269826d)<br> | ||
| + | [[Average orbital speed]] 31.378 km/s<br> | ||
| + | [[Inclination]] 0.03° (to Jupiter's equator)<br> | ||
| + | PHYSICAL CHARACTERISTICS<br> | ||
| + | [[Dimensions]] 20×16×14 km<br> | ||
| + | [[Mean radius]] 8.2 km<br> | ||
| + | [[Volume]] ≈2345 <sup>km</sup><br> | ||
| + | [[Rotation period]] synchronous<br> | ||
| + | [[Axial tilt]] zero<br> | ||
| + | [[Albedo]] 0.10<br> | ||
| + | [[Surface Temperature]] ≈122 K<br> | ||
| + | [[Category: Articles]] | ||
| + | [[Category: Celestial bodies]] | ||
| + | [[Category: Satellites of Jupiter]] | ||
{{JupiterSat}} | {{JupiterSat}} | ||
| − | {{ | + | {{Nsat-Stub}} |
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