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来自维基百科,自由的百科全书
天鵝座55,又名BD+45 3291,HD 198478、SAO 50099、HR 7977,是天鵝座的一顆恆星[1][2],視星等為4.84,位於銀經85.75,銀緯1.49,其B1900.0坐標為赤經20h 45m 31.8s,赤緯+45° 1.49′ 35″。
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.