Definition of 二等星 (にとうせい)
にとうせい
                        二等星
にとうせい
nitousei
noun
•
                
second magnitude star(astronomy term)
Other readings:
                2等星【にとうせい】
                Related Kanji
| 二 | two, two radical (no. 7) | 
| 等 | etc., and so forth, class (first), quality, equal, similar | 
| 星 | star, spot, dot, mark |