单词 | koronis family |
释义 | Koronis familyKoronis family(kŏ-roh -nis) A Hirayama family of asteroids located at 2.9 AU from the Sun. The members are S-type asteroids with very similar color, spectra, and albedos. The precursor body was at least 90 km across. Many of the Koronis family ‘remember’ the original spin of the precursor, indicating that they have not collided enough since their formation to have had their spins randomized. |
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