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来自维基百科,自由的百科全书
長蛇座 R的星等變化從3.21等至11.00等,週期為389天。長蛇座 R 的週期會是緩慢的變化。
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.