单词 | Europa |
释义 | Europa [yu̇`rō·pǝ] ASTRONOMY 1. A satellite of Jupiter with a mean distance from Jupiter of 4.17 × 105 miles (6.71 × 105 kilometers), orbital period of 3.6 days, and diameter of about 1950 miles (3100 kilometers). Also known as Jupiter II. 2. An asteroid with a diameter of about 168 miles (280 kilometers), mean distance from the sun of 3.096 astronomical units, and C-type surface composition. |
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