TRAPPIST-1e

**TRAPPIST-1e**
	艺术家对2018年TRAPPIST-1e的描绘，此处描绘成为一个被潮汐锁定的行星，其有液态海洋。这颗系外行星的实际外观目前未知，但根据其密度，它很可能没有完全被水覆盖。
发现
發現者	斯皮策太空望远镜
發現日期	2017年2月22日
檢測方法	凌日法
軌道參數
遠拱点	0.0294322±0.000017 AU
近拱点	0.0291335±0.000017 AU
半長軸	0.02928285 ± 3.4e-07 AU
離心率	0.00510±0.00058
軌道週期	6.099043 ± 0.000015 d
軌道傾角	89.860+0.10; −0.12
物理特徵
平均半徑	0.910+0.027; −0.026 R🜨
質量	0.772+0.075; −0.079 M🜨
平均密度	5.65+0.39; −0.42 g cm−3
表面重力	0.930+0.063; −0.068 g
溫度	Teq: 246.1 ± 3.5 K（−27.05 ± 3.50 °C；−16.69 ± 6.30 °F）

TRAPPIST-1e，也称为2MASS J23062928-0502285 e，是一颗接近地球大小的类地系外行星，在超低温矮星 TRAPPIST-1周围的适居带内运行，距离地球大约40光年（12秒差距，380000万公里，240000000百万英里），位于宝瓶座。这颗系外行星是通过凌日法发现的，其中测量了行星穿过其恒星前方时产生的变暗效应。

它是通过斯皮策太空望远镜的观测发现的围绕这颗恒星运行的七颗新系外行星之一。^[3]^[4]在七个当中的三个（e、f和g）位于适居带内。^[5]^[6]TRAPPIST-1e有着类似于地球的质量、半径、密度、重力、温度和恒星通量。^[1]^[2]它也被证实有一个致密的大气层，就像我们太阳系中的其他类地行星一样。^[7]

2018年11月，研究人员确定，在多行星系统的七颗系外行星中，TRAPPIST-1e是最有可能成为类地海洋行星的一颗，也是最值得进一步研究适居性的一颗。^[8]根据适居系外行星目录，TRAPPIST-1e是迄今为止发现的最有可能适居的系外行星之一。^[9]

参考资料[编辑]

^ ^1.0 ^1.1 ^1.2 ^1.3 ^1.4 ^1.5 ^1.6 Grimm, Simon L.; Demory, Brice-Olivier; Gillon, Michael; Dorn, Caroline; Agol, Eric; Burdanov, Artem; et al. The nature of the TRAPPIST-1 exoplanets. Astronomy and Astrophysics. 5 February 2018, 613: A68. Bibcode:2018A&A...613A..68G. S2CID 3441829. arXiv:1802.01377 . doi:10.1051/0004-6361/201732233.
^ ^2.0 ^2.1 ^2.2 Delrez, Laetitia; Gillon, Michael; Triaud, Amaury H.M.J.; Demory, Brice-Oliver; de Wit, Julien; Ingalls, James; et al. Early 2017 observations of TRAPPIST-1 with Spitzer. Monthly Notices of the Royal Astronomical Society. 9 January 2018, 475 (3): 3577. Bibcode:2018MNRAS.475.3577D. S2CID 54649681. arXiv:1801.02554 . doi:10.1093/mnras/sty051.
^ Gillon, Michaël; Triaud, Amaury H.M.J.; Demory, Brice-Olivier; Jehin, Emmanuël; Agol, Eric; Deck, Katherine M.; et al. Seven temperate terrestrial planets around the nearby ultracool dwarf star TRAPPIST-1. Nature. 2017, 542 (7642): 456–460. Bibcode:2017Natur.542..456G. PMC 5330437 . PMID 28230125. arXiv:1703.01424 . doi:10.1038/nature21360.
^ Gillon, Michaël; Jehin, Emmanuël; Lederer, Susan M.; Delrez, Laetitia; de Wit, Julien; Burdanov, Artem; et al. Temperate Earth-sized planets transiting a nearby ultracool dwarf star. Nature. 2016, 533 (7602): 221–224. Bibcode:2016Natur.533..221G. PMC 5321506 . PMID 27135924. arXiv:1605.07211 . doi:10.1038/nature17448.
^ NASA telescope reveals largest batch of Earth-size, habitable-zone planets around single star (新闻稿). Exoplanet exploration: Planets beyond our Solar System. [22 February 2017]. （原始内容存档于2019-08-05）.
^ TRAPPIST-1 Planet Lineup (新闻稿). NASA / Jet Propulsion Laboratory. 22 February 2017 [2021-12-08]. （原始内容存档于2017-02-23）.
^ de Wit, Julien; Wakeford, Hannah R.; Lewis, Nikole K.; Delrez, Laetitia; Gillon, Michaël; Selsis, Frank; et al. Atmospheric reconnaissance of the habitable-zone Earth-sized planets orbiting TRAPPIST-1. Nature Astronomy. 2018, 2 (3): 214–219. Bibcode:2018NatAs...2..214D. S2CID 119085332. arXiv:1802.02250 . doi:10.1038/s41550-017-0374-z.
^ Study brings new climate models of small star TRAPPIST 1's seven intriguing worlds. EurekAlert!. University of Washington. 21 November 2018 [22 November 2018]. （原始内容存档于2020-11-08）.
^ The Habitable Exoplanets Catalog. Planetary Habitability Laboratory @ UPR Arecibo (phl.upr.edu). [2019-02-06]. （原始内容存档于2016-01-09）.

天球赤道座標： 23^h 06^m 29.283^s，−05° 02′ 28.59″

[Grimm-Demory-etal-2018-1] 1.0 ^1.1 ^1.2 ^1.3 ^1.4 ^1.5 ^1.6 Grimm, Simon L.; Demory, Brice-Olivier; Gillon, Michael; Dorn, Caroline; Agol, Eric; Burdanov, Artem; et al. The nature of the TRAPPIST-1 exoplanets. Astronomy and Astrophysics. 5 February 2018, 613: A68. Bibcode:2018A&A...613A..68G. S2CID 3441829. arXiv:1802.01377 . doi:10.1051/0004-6361/201732233.

[Delrez-2018-2] 2.0 ^2.1 ^2.2 Delrez, Laetitia; Gillon, Michael; Triaud, Amaury H.M.J.; Demory, Brice-Oliver; de Wit, Julien; Ingalls, James; et al. Early 2017 observations of TRAPPIST-1 with Spitzer. Monthly Notices of the Royal Astronomical Society. 9 January 2018, 475 (3): 3577. Bibcode:2018MNRAS.475.3577D. S2CID 54649681. arXiv:1801.02554 . doi:10.1093/mnras/sty051.

[Gillon-Triaud-etal-2017-3] Gillon, Michaël; Triaud, Amaury H.M.J.; Demory, Brice-Olivier; Jehin, Emmanuël; Agol, Eric; Deck, Katherine M.; et al. Seven temperate terrestrial planets around the nearby ultracool dwarf star TRAPPIST-1. Nature. 2017, 542 (7642): 456–460. Bibcode:2017Natur.542..456G. PMC 5330437 . PMID 28230125. arXiv:1703.01424 . doi:10.1038/nature21360.

[Gillon-Jehin-etal-2016-4] Gillon, Michaël; Jehin, Emmanuël; Lederer, Susan M.; Delrez, Laetitia; de Wit, Julien; Burdanov, Artem; et al. Temperate Earth-sized planets transiting a nearby ultracool dwarf star. Nature. 2016, 533 (7602): 221–224. Bibcode:2016Natur.533..221G. PMC 5321506 . PMID 27135924. arXiv:1605.07211 . doi:10.1038/nature17448.

[NASA-press-exopl-1419-5] NASA telescope reveals largest batch of Earth-size, habitable-zone planets around single star (新闻稿). Exoplanet exploration: Planets beyond our Solar System. [22 February 2017]. （原始内容存档于2019-08-05）.

[JPL-press-21422-6] TRAPPIST-1 Planet Lineup (新闻稿). NASA / Jet Propulsion Laboratory. 22 February 2017 [2021-12-08]. （原始内容存档于2017-02-23）.

[deWit-Wakeford-etal-2018-7] Wit, Julien; Wakeford, Hannah R.; Lewis, Nikole K.; Delrez, Laetitia; Gillon, Michaël; Selsis, Frank; et al. Atmospheric reconnaissance of the habitable-zone Earth-sized planets orbiting TRAPPIST-1. Nature Astronomy. 2018, 2 (3): 214–219. Bibcode:2018NatAs...2..214D. S2CID 119085332. arXiv:1802.02250 . doi:10.1038/s41550-017-0374-z.

[eurekalert-2018-11-21-8] Study brings new climate models of small star TRAPPIST 1's seven intriguing worlds. EurekAlert!. University of Washington. 21 November 2018 [22 November 2018]. （原始内容存档于2020-11-08）.

[Arecibo-PHL-HabPlanCtlg-9] The Habitable Exoplanets Catalog. Planetary Habitability Laboratory @ UPR Arecibo (phl.upr.edu). [2019-02-06]. （原始内容存档于2016-01-09）.

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