| 单词 | ida-2 |
| 释义 | Ida-2Ida-2(ÿ -dă) An asteroid that was discovered in 1880. It is an S-type asteroid, studied by the Galileo spacecraft in 1993, when it was found to have a satellite, named Dactyl . Ida is about 58 km × 23 km. Dactyl is about 1.5 km in diameter and orbits Ida at a distance of about 100 km. |
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