magnitude of star的意思|示意

In the illustration, the largest star symbol will be used for stars of magnitude 3 and brighter, so the entire range of star symbol will be used between magnitude 8 and magnitude 3.

在下面的图例中，最大的恒星符号代表3等及其以上的天体，因此可以在3 - 8等之间使用全部恒星符号。

The result illustrates that the noise error increases with the increase of the magnitude of the star.

分析结果表明，系统引入的噪声随着所观测恒星星等的增加而增加。

Astronomers describe star brightness in terms of magnitude and luminosity.

天文学家用星等和光度来描述恒星的亮度。

The magnitude scale now runs to more than six and less than one, even descending into negative Numbers -the brightest star in the night sky is Sirius, with an apparent magnitude of -1.46.

现在星等的取值范围已经多过六等，低于一等，甚至下降到负值——夜空中最亮的星是天狼星，它的可视星等为- 1.46。

In Astrometry, the term is applied to the difference between the observed position (or magnitude) of a reference star and the position (or magnitude) listed in the star catalog.

在天文上，本术语指的是观测的参考星的位置(或星等)与星表上的该星的位置(或星等)的差值。

The magnitude of a star is based on a scale more than 2,000 years old, devised by Greek astronomer Hipparchus in about 125 BC.

星等分类的方法沿用了超过2000年，由古希腊天文学家Hipparchus于公元前125年创立。