Of a star: That varies periodically in respect of brightness or magnitude.
| 单词 | θ818 |
| 释义 | the world > the universe > star > kind of star > by light > [adjective] > variable (3) variable1788 Of a star: That varies periodically in respect of brightness or magnitude. irregular1903 Astronomy. Of a variable star: fluctuating in brightness in a way that lacks any definite rhythm. period–luminosity1918 designating or relating to a law relating the period of a variable star, esp. a cepheid, to its luminosity, used in establishing its distance from… |
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