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DG Canum Venaticorum is a variable binary star system in the northern constellation of Canes Venatici. As of 2009, the pair have an angular separation of 0.20″ along a position angle of 285°, which corresponds to a physical separation of around 3.6 AU. With an apparent visual magnitude of 12.02, the pair are much too faint to be seen with the naked eye. Parallax measurements place the system at a distance of roughly 59 light years from the Earth.

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  • DG Canum Venaticorum (en)
  • DG Canum Venaticorum (nl)
  • DG Canum Venaticorum (sv)
  • 獵犬座DG (zh)
rdfs:comment
  • DG Canum Venaticorum is een rode dwerg met een spectraalklasse van M4Ve. De ster bevindt zich 59,64 lichtjaar van de zon. (nl)
  • 獵犬座DG是以變星命名的聯星,這個系統位於北天的獵犬座。在2009年,這一對的角距離是0.20角秒,方位角為285°,對應於實際的距離大約是3.6天文單位,視星等12.02等,是太微弱了,以至於裸眼看不見它們。視差測量這一對系統與地球的距離大約是59光年。 主星的恆星光譜為M4.0Ve,表示這是顆有發射譜線的紅矮星。它被認為是非常年輕的系統,估計年齡只有3,000萬歲,並有著比太陽高的金屬量。主星的自轉非常快速,投射轉速高達每秒50公里。系統中至少有一顆是閃光星的變星,這意味著它的亮度會隨機地進行短暫增加。在2014年4月23日,史威福衛星觀察到這個系統所在位置的伽瑪射線超級閃焰事件;這也許是在紅矮星上觀察到的最耀眼事件。在一天後,觀察到第二個電波閃焰。 (zh)
  • DG Canum Venaticorum is a variable binary star system in the northern constellation of Canes Venatici. As of 2009, the pair have an angular separation of 0.20″ along a position angle of 285°, which corresponds to a physical separation of around 3.6 AU. With an apparent visual magnitude of 12.02, the pair are much too faint to be seen with the naked eye. Parallax measurements place the system at a distance of roughly 59 light years from the Earth. (en)
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  • DG Canum Venaticorum (en)
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  • http://commons.wikimedia.org/wiki/Special:FilePath/DGCVnLightCurve.png
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absmag v
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  • M4.0Ve (en)
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  • A (en)
  • B (en)
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  • J2000.0 (en)
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  • V*+DG+CVn (en)
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