单词apparent magnitude
un.: 视星等
网络: 视量；以上讨论的是视星等；视星等级
视星等
Its brightness peaked in May with an apparent magnitude of about 3 and slowly declined in the following months.
这颗星在5月达到最亮，亮度3级，然后就慢慢的黯淡下去了。
Sirius is the brightest star in the nighttime sky, with a visual apparent magnitude of -1. 46.
天狼星在夜晚的天空中是最明亮的星星，视星等级为-1.
The Merope Nebula has an apparent magnitude of 13. It is illuminated entirely by the star Merope, which is embedded in the nebula.
玛亚的星云视星等为13等，完全是被深埋在其中的昴宿五照亮的。
The Effect of Stellar Spots on the Apparent Magnitude, Colour and Apparent Lithium Abundance of Stars
恒星黑子对恒星视星等颜色和视锂丰度的影响