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K2-3 - 版本历史
2026-07-18T12:21:17Z
本wiki上该页面的版本历史
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2021-02-07T06:20:08Z
<p>补救3个来源，并将0个来源标记为失效。) #IABot (v2.0.8</p>
<p><b>新页面</b></p><div>{{Starbox begin<br />
| name = K2-3<br />
}}<br />
{{Starbox observe<br />
| epoch = J2000<br />
| constell = [[獅子座]]<br />
| ra = {{RA|11|29|20.39}}<ref name="nasa">{{cite web<br />
| url=http://exoplanetarchive.ipac.caltech.edu/cgi-bin/DisplayOverview/nph-DisplayOverview?objname=K2-3&type=PLANET_HOST<br />
| title=K2-3 PLANET HOST OVERVIEW PAGE<br />
| work=NASA Exoplanet Archive<br />
| accessdate=2015-10-17<br />
| archive-date=2019-02-03<br />
| archive-url=https://web.archive.org/web/20190203143815/https://exoplanetarchive.ipac.caltech.edu/cgi-bin/DisplayOverview/nph-DisplayOverview?objname=K2-3&type=PLANET_HOST<br />
| dead-url=no<br />
}}</ref><br />
| dec = {{DEC|-01|27|17.2}}<ref name="nasa" /><br />
}}<br />
{{Starbox character<br />
| class = M0V<ref name="nasa" /><br />
| b-v = 1.35 ± 0.06<ref name="nasa" /><br />
}}<br />
{{Starbox astrometry<br />
| radial_v=32.6 ± 1<ref name="nasa" /><br />
| prop_mo_ra=88.3 ± 2.0<ref name="nasa" /><br />
| prop_mo_dec=-73.6 ± 2.7<ref name="nasa" /><br />
}}<br />
{{Starbox detail<br />
| mass=0.601 ± 0.089<ref name="nasa" /><br />
| radius=0.561 ± 0.068<ref name="nasa" /><br />
| temperature=3896 ± 189<ref name="nasa" /><br />
| metal_fe = –0.32 ± 0.13<ref name=exoplanet>{{cite web|url=http://exoplanet.eu/catalog/K2-3_d/|title=The Extrasolar Planet Encyclopaedia — K2-3 d|publisher=|accessdate=2016-08-26|archive-date=2018-10-02|archive-url=https://web.archive.org/web/20181002135525/http://exoplanet.eu/catalog/k2-3_d/|dead-url=no}}</ref><br />
| age_gyr=>1<ref name="nasa" /><br />
}}<br />
{{Starbox catalog<br />
| names=EPIC 201367065, K2-3, WISE J112920.45-012718.0, 2MASS J11292037-0127173<br />
}}<br />
{{Starbox end}}<br />
<br />
'''K2-3'''（ 也稱為'''EPIC 201367065'''）是一顆位於[[獅子座]]的[[紅矮星]]，目前已知有三顆[[行星]]繞行。這三顆行星都是[[超級地球]]，位於[[可居住區]]最外層<ref>{{Cite web |url=http://www.sci-news.com/astronomy/science-three-super-earths-red-dwarf-02412.html |title=Three Super-Earths Found Circling Nearby Red Dwarf |accessdate=2016-08-26 |archive-date=2019-01-02 |archive-url=https://web.archive.org/web/20190102064436/http://www.sci-news.com/astronomy/science-three-super-earths-red-dwarf-02412.html |dead-url=no }}</ref>。K2-3的性質類似[[橙矮星]]/K型星，科學家根據其表面溫度（4,000K是M和K型星典型光譜分界線）分類為紅矮星。<br />
<br />
K2-3距離地球137[[光年]]，是最近10顆擁有凌日行星的恆星之一。天文學家可以研究其行星大氣層，確定它們是否類似地球大氣層，有利於生命存在。<br />
<br />
==行星系統==<br />
目前已知有三顆[[行星]]繞行K2-3：<br />
{{OrbitboxPlanet begin<br />
| table_ref = <ref name="nasa"/><br />
}}<br />
{{OrbitboxPlanet<br />
| exoplanet = [[K2-3b|b]]<br />
| mass_earth = 8.40±2.10<br />
| semimajor = 0.0775<br />
| period = 10.05429<br />
| inclination = {{val|89.59|+0.24|−0.40}}<br />
| radius_earth = {{val|2.078|+0.180|−0.093}}<br />
| eccentricity = 0.06 ± 0.06<br />
}}<br />
{{OrbitboxPlanet<br />
| exoplanet = [[K2-3c|c]]<br />
| mass_earth = {{val|2.1|+2.1|−1.3}}<br />
| semimajor = 0.1405<br />
| period = 24.6491<br />
| inclination = 89.70 ± 0.20<br />
| radius_earth = {{val|1.644|+0.160|−0.065}}<br />
| eccentricity = 0.04 ± 0.04<br />
}}<br />
{{OrbitboxPlanet<br />
| exoplanet = [[K2-3d|d]]<br />
| mass_earth = 11.1 ± 3.5<br />
| semimajor = 0.2086<br />
| period = 44.5705<br />
| inclination = 89.79 ± 0.15<br />
| radius_earth = 1.61 ± 0.20<br />
| eccentricity = 0.045 ± 0.045<br />
}}<br />
{{Orbitbox end}}<br />
<br />
==參考資料==<br />
{{Reflist}}<br />
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<br />
{{Stars of Leo}}<br />
<br />
[[Category:獅子座]]<br />
[[Category:紅矮星]]</div>
imported>InternetArchiveBot