编辑“︁LHS 1140 b”︁（章节）

==特徵==
===主星===
LHS 1140b距離主星[[LHS 1140]] 1309萬公里（0.09個[[天文單位]]）運行，它以大約25天的周期公轉。主星距離只有[[太陽]]到[[地球]]距離的8%，但由於LHS 1140只是一顆質量和半徑比[[太陽]]小15%的小紅矮星<ref name="ST-20170419">{{cite web|last1=Dickinson|first1=David|title=Welcome to LHS 1140b: A Super-Earth in the Habitable Zone|url=http://www.skyandtelescope.com/astronomy-news/welcome-lhs-1140b-super-earth-habitable-zone/|website=Sky & Telescope|accessdate=2017-04-19|date=2017-04-19|archive-date=2018-09-08|archive-url=https://web.archive.org/web/20180908000944/https://www.skyandtelescope.com/astronomy-news/welcome-lhs-1140b-super-earth-habitable-zone/|dead-url=no}}</ref>，所以熱量和能量由LHS 1140b接收到的，只是大約是地球接收到的陽光量的一半。

===質量和半徑===
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LHS 1140 b質量約為[[地球]]的6.7±1.8倍，半徑約為地球的1.4±0.1倍<ref name="NAT-20170419">{{cite journal|doi=10.1038/nature22055|title=A temperate rocky super-Earth transiting a nearby cool star|journal=Nature|volume=544|issue=7650|pages=333|year=2017|last1=Dittmann|first1=Jason A.|last2=Irwin|first2=Jonathan M.|last3=Charbonneau|first3=David|last4=Bonfils|first4=Xavier|last5=Astudillo-Defru|first5=Nicola|last6=Haywood|first6=Raphaëlle D.|last7=Berta-Thompson|first7=Zachory K.|last8=Newton|first8=Elisabeth R.|last9=Rodriguez|first9=Joseph E.|last10=Winters|first10=Jennifer G.|last11=Tan|first11=Thiam-Guan|last12=Almenara|first12=Jose-Manuel|last13=Bouchy|first13=François|last14=Delfosse|first14=Xavier|last15=Forveille|first15=Thierry|last16=Lovis|first16=Christophe|last17=Murgas|first17=Felipe|last18=Pepe|first18=Francesco|last19=Santos|first19=Nuno C.|last20=Udry|first20=Stephane|last21=Wünsche|first21=Anaël|last22=Esquerdo|first22=Gilbert A.|last23=Latham|first23=David W.|last24=Dressing|first24=Courtney D.}}</ref><ref name="NYT-20170419">{{cite news |last=Overbye |first=Dennis |authorlink=丹尼斯·奧弗拜 |title=A New Exoplanet May Be Most Promising Yet in Search for Life |url=https://www.nytimes.com/2017/04/19/science/exoplanet-signs-of-life.html |date=2017-04-19 |work=[[紐約時報|New York Times]] |accessdate=2017-04-20 |archive-date=2020-11-11 |archive-url=https://web.archive.org/web/20201111202355/https://www.nytimes.com/2017/04/19/science/exoplanet-signs-of-life.html |dead-url=no }}</ref>。它的質量比地球還大，因此LHS 1140b很可能是[[超級地球]]。由於相對於質量半徑小、密度高，所以表面的重力是地球的三倍以上。自誕生以來已經超過50億年。

===溫度===
LHS 1140 b表面溫度為230[[热力学温标|K]]（-43[[摄氏温标|°C]]）。由於主星LHS 1140不是活躍的恆星，使其不受強[[輻射]]的影響，因此如果有大氣產生[[溫室效應]]，諸如[[水|液態水]]和生命的存在是可能的。