“Adrastea”的概念、定义、翻译、参考文献-科学参考

Adrastea

Astronomy

The second-closest satellite of Jupiter, distance 129 000 km, orbital period 0.298 days; also known as Jupiter XV. Adrastea is 20 × 16 × 14 km in size. It was discovered in 1979 with the Voyager 2 spacecraft. It lies less than one Jovian radius above the planet’s cloud tops and just within the outer rim of Jupiter’s main ring. Material knocked off Adrastea by micrometeorite impacts is thought to contribute to the ring.

Geology and Earth Sciences

A jovian satellite (a moom) that orbits within the main ring of Jupiter; it and Metis may be the source of the material comprising the ring. Both are considered too small to suffer tidal disruption, but eventually their orbits will decay. Adrastea is one of the smallest satellites in the solar system. It was discovered in 1979 by David Jewitt. Its diameter is 20 km (±20) (23 × 20 × 15 km); mass 1.91 × 10⁶ kg; mean distance from Jupiter 129 000 km.

单词	Adrastea
释义	Adrastea Astronomy The second-closest satellite of Jupiter, distance 129 000 km, orbital period 0.298 days; also known as Jupiter XV. Adrastea is 20 × 16 × 14 km in size. It was discovered in 1979 with the Voyager 2 spacecraft. It lies less than one Jovian radius above the planet’s cloud tops and just within the outer rim of Jupiter’s main ring. Material knocked off Adrastea by micrometeorite impacts is thought to contribute to the ring. Geology and Earth Sciences A jovian satellite (a moom) that orbits within the main ring of Jupiter; it and Metis may be the source of the material comprising the ring. Both are considered too small to suffer tidal disruption, but eventually their orbits will decay. Adrastea is one of the smallest satellites in the solar system. It was discovered in 1979 by David Jewitt. Its diameter is 20 km (±20) (23 × 20 × 15 km); mass 1.91 × 10⁶ kg; mean distance from Jupiter 129 000 km.
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