英仙座21,又名BD+31 509,HD 18296、SAO 56031、HR 873,是英仙座的一颗恒星[1][2],视星等为5.11,位于银经151.88,银纬-23.77,其B1900.0坐标为赤经2h 51m 12.9s,赤纬+31° -23.77′ 54″。
参考文献
Wikiwand in your browser!
Seamless Wikipedia browsing. On steroids.
Every time you click a link to Wikipedia, Wiktionary or Wikiquote in your browser's search results, it will show the modern Wikiwand interface.
Wikiwand extension is a five stars, simple, with minimum permission required to keep your browsing private, safe and transparent.