| 单词 | aten group |
| 释义 | Aten groupAten group(ah -ten) A group of near-Earth asteroids that have semimajor axes less than 1 AU and thus periods of less than one year. The group is named after (2062) Aten, discovered in 1976 (see Table 3, backmatter). Over a dozen Aten asteroids are now known, the largest being (2100) Ra-Shalom and 1986 T0 (asteroid number 3753). |
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