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KELT-2A - 版本历史
2026-07-20T20:58:53Z
本wiki上该页面的版本历史
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imported>Jimmy-bot：机器人: 尚未清空的已重定向分类（Cat:F-型主序星→Cat:F型主序星）
2024-06-25T08:40:30Z
<p>机器人: 尚未清空的已重定向分类（<a href="/index.php?title=Cat:F-%E5%9E%8B%E4%B8%BB%E5%BA%8F%E6%98%9F&action=edit&redlink=1" class="new" title="Cat:F-型主序星（页面不存在）">Cat:F-型主序星</a>→<a href="/index.php?title=Cat:F%E5%9E%8B%E4%B8%BB%E5%BA%8F%E6%98%9F&action=edit&redlink=1" class="new" title="Cat:F型主序星（页面不存在）">Cat:F型主序星</a>）</p>
<p><b>新页面</b></p><div>{{Starbox begin<br />
| name = KELT-2A<br />
}}<br />
{{Starbox observe<br />
| epoch = [[J2000]]<br />
| constell = [[御夫座]]<br />
| ra = {{RA|06|10|39}}<br />
| dec = {{DEC|+30|57|25}}<br />
| appmag_v = 8.77<ref name="discovery" /><br />
}}<br />
{{Starbox character<br />
| class = F7V<br />
| appmag_2_passband = V<br />
| appmag_2 = 8.77<ref name="discovery" /><br />
}}<br />
{{Starbox astrometry<br />
| radial_v = 47.5±0.2<br />
| prop_mo_ra = 21.2±1.4<br />
| prop_mo_dec = -1.5±0.8<br />
| dist_ly = 419 ± 15<br />
| dist_pc = 128.6 ± 4.7<br />
}}<br />
{{Starbox detail<br />
| mass = 1.314 (−0.060 +0.063) <br />
| radius = 1.836 (−0.046 +0.066)<br />
| density =<br />
| gravity =<br />
| luminosity = <br />
| temperature = 6148 ± 48<br />
| metal = 0.03 ± 0.78<br />
| rotation = <br />
| age = 3.97 ± 0.01 billion<br />
}}<br />
{{Starbox catalog |<br />
names= [[HD Catalog|HD]] 42176A, [[Washington Double Star Catalog|WDS]] J06107+3057A, [[Hipparcos Catalogue|TYC]] 2420-899-1<br />
}}<br />
{{Starbox reference <br />
| EPE=KELT-2A<br />
| Simbad=KELT-2A<br />
}}<br />
{{Starbox end}}<br />
<br />
'''KELT-2A'''，即'''HD 42176A'''，是一顆距離地球約419光年的[[黃-白矮星]]，位於[[御夫座]]。該恆星的視星等8.77，必須以雙筒望遠鏡觀測。<br />
<br />
KELT-2A 是聯星系統 KELT-2（HD 42176）中較明亮的主星，伴星 KELT-2B 是一顆[[橙矮星]]，距離主星約295天文單位。<br />
<br />
==行星系統==<br />
KELT-2A 已知有一顆[[太陽系外行星]] [[KELT-2Ab]]<ref name="discovery">{{cite journal | url=http://arxiv.org/abs/1206.1592 | author=Beatty | title=KELT-2Ab: A Hot Jupiter Transiting the Bright (V=8.77) Primary Star of a Binary System | journal=The [[Astrophysical Journal]] Letters | year=2012 | access-date=2012-08-31 | archive-date=2020-08-11 | archive-url=https://web.archive.org/web/20200811144104/https://arxiv.org/abs/1206.1592 | dead-url=no }} ([http://arxiv.org/abs/1206.1592 web Preprint] {{Wayback|url=http://arxiv.org/abs/1206.1592 |date=20200811144104 }})</ref>。<br />
<br />
{{OrbitboxPlanet begin}} <br />
{{OrbitboxPlanet<br />
| exoplanet = [[KELT-2Ab|b]]<br />
| mass = 1.524 ± 0.088<br />
| period = 4.1137913 ± 0.00001<br />
| semimajor = 0.05504 ± 0.00086<br />
| eccentricity = 0<br />
| radius = 1.290 ± 0.057<br />
}} <br />
{{Orbitbox end}}<br />
<br />
==參見==<br />
* {{link-en|千度極小望遠鏡巡天|Kilodegree Extremely Little Telescope}}（Kilodegree Extremely Little Telescope，KELT）<br />
<br />
==參考資料==<br />
{{reflist}}<br />
<br />
==外部連結==<br />
* [http://www.astronomy.ohio-state.edu/keltnorth/ KELT-North survey website] {{Wayback|url=http://www.astronomy.ohio-state.edu/keltnorth/ |date=20190124172930 }}<br />
* {{cite web |url=http://exoplanet.eu/catalog/kelt-2a_b/ |title=Planet KELT-2A b |accessdate=2012-07-30 |work=The Extrasolar Planets Encyclopaedia |publisher= |date= |deadurl=yes |archiveurl=https://web.archive.org/web/20121019013029/http://exoplanet.eu/catalog/kelt-2a_b/ |archivedate=2012-10-19 }}<br />
<br />
<!-- Sky coordinates --><br />
{{Sky|06|10|39|+|30|57|25}}<br />
<br />
<!-- Categories --><br />
[[Category:御夫座]]<br />
[[Category:F型主序星]]<br />
[[Category:HD和HDE天體|42176A]]<br />
[[Category:行星系]]<br />
[[Category:行星凌變星]]</div>
imported>Jimmy-bot