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开普勒22

开普勒22
Kepler-22
观测资料
历元 J2000
星座 天鹅座
星官
赤经 19h 16m 52.2s
赤纬 +47° 53′ 4.2″
视星等(V)
特性
天体测定
详细资料
质量0.970 M
半径0.979 R
温度5518 K
其他命名
KOI-087
参考数据库

开普勒22(即开普勒22a)是G型主序星,距离地球约600光年。这颗恒星拥有行星系统,第一颗辨认出来的行星位于和地球类似的适居带内。开普勒22是一颗类太阳恒星,半径比太阳略小,温度比太阳低。[1] 它位于天鹅座边界靠近天琴座的地方,赤经为19h16m52.2s,赤纬为 +47°53′4.2″。[2]

行星系统

[编辑]

2011年12月5日,科学家宣布在开普勒22的可居住带内发现一颗类似地球的系外行星开卜勒22b[3]这是开普勒太空望远镜第一颗确认肯定存在的位于恒星适居带内的系外行星。[4]

开普勒22的行星系[5]
成员
(依恒星距离)
质量 半长轴
(AU)
轨道周期
()
离心率 倾角 半径
b < 0.11 MJ 0.849 ± 0.018 289.8623 +0.016
−0.02

参考资料

[编辑]
  1. ^ Kepler Confirms First Planet in Habitable Zone of Sun-Like Star. Universe Today. 2011-12-05 [2011-12-06]. (原始内容存档于2012-09-05). 
  2. ^ Kepler Discoveries. 2011-12-05 [2011-12-06]. (原始内容存档于2017-04-01). 
  3. ^ Boyle, Rebecca. Kepler Team Confirms First Earth-like Planet in a Habitable Zone, And Finds 1,094 More Worlds. Popular Science. December 5, 2011 [December 5, 2011]. (原始内容存档于2012-09-05). 
  4. ^ NASA Telescope Confirms Alien Planet in Habitable Zone. Space.com. 2011-12-05 [2011-12-06]. (原始内容存档于2017-06-05). 
  5. ^ Schneider, Jean, Star: Kepler-22, Extrasolar Planets Encyclopaedia (Paris Observatory), [2011-12-06], (原始内容存档于2012-01-19) 


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开普勒22
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