开普勒-160是星座天琴座中的主序带恒星,大约在离开银河臂的宽处。由美国国家航空暨太空总署领导的开普勒任务首先详细研究,发现他有颗类地行星。这颗恒星在质量和半径上与太阳非常相似[3][2],有三颗已确认的行星和一颗未经证实的行星围绕它运行。
Quick Facts 观测资料 历元 J2000, 特性 ...
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开普勒-160恒星相当古老,没有可探测到的星周盘[4]。这颗恒星的金属量是未知的,据报导的值相互冲突,是太阳金属量的40%或160%[5][6]。
在这个系统(以及所有其他系统)中,搜索外星智慧的突破聆听没有发现潜在的技术签名[7]。
开普勒-160系统中的两颗行星候选者于2010年被发现,于2011年初发表[8],并在2014年确认[9]。尽管它们的轨道周期比接近1:3,但行星开普勒-160b和开普勒-160c没有轨道共振[10]。
2020年发现了位于适居带的另一块岩石凌日行星候选者KOI-456.04[2],由于凌日时间变化解中的残差,怀疑有更多的非凌日行星。据研究人员所知,KOI-456.04看起来不到地球大小的两倍,而且绕开普勒-160运行的距离,显然与地球到太阳的距离大致相同(一个完整的轨道是378天)。也许最重要的是,它接收的光量大约是地球从太阳获得的93%[11]。非凌日行星候选者开普勒-160d的质量在1到100个地球质量之间,轨道周期在大约7到50天之间[2]。
More information 成员 (依恒星距离), 质量 ...
开普勒-160的行星系[2]
成员 (依恒星距离)
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质量
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半长轴 (AU)
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轨道周期 (天)
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离心率
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倾角
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半径
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b
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—
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0.05511+0.0019 −0.0037
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4.309397+0.000013 −0.000012
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0
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—
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1.715+0.061 −0.047 R⊕
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c
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—
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0.1192+0.004 −0.008
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13.699429+0.000018 −
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0
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—
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3.76+0.23 −0.09 R⊕
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d
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1—100 M⊕
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—
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7—50
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—
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—
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—
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e (未确认)
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?
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1.089+0.037 −0.073
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378.417+0.028 −0.025
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0
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