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单词
caldwell number
释义
Caldwell number
Caldwell number
[
′kȯl‚dwel ¦nəm·bər
]
(astronomy)
A number by which star clusters, nebulae, and galaxies are listed in the Caldwell Catalog, arranged in order of declination; for example, the Hyades are C41.
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更新时间:2025/4/2 23:49:07