LHS 2520

**LHS 2520**
觀測資料; 曆元 J2000
星座	烏鴉座
星官
赤經	12h 10m 05.597s
赤緯	−15° 04′ 15.66″
視星等（V）	12.12
特性
光谱分类	M3.5V
天体测定
自行 (μ)	赤经：−65 mas/yr ; 赤纬：−710 mas/yr
视差 (π)	77.93 ± 2.41 mas
距离	42 ± 1 ly ; (12.8 ± 0.4 pc)
詳細資料
溫度	3024 K
其他命名
	LHS 2520, GJ 3707, LP 734-32.

LHS 2520，或稱為葛利斯3707（Gliese 3707），是一顆位於烏鴉座的紅矮星。該恆星的視星等是肉眼不可見的12.12，光譜型為M3.5V^[1]，表面溫度3024 K^[3]。它因為亮度過低，無法以依巴谷卫星進行視差量測。地面望遠鏡量測結果顯示該恆星視差為77.93 ± 2.41 毫角秒，即距離地球42 ± 1光年^[2]。

大眾文化中的LHS 2520

2012年11月7日出刊的《动作漫画》 #14（2013年1月號）中，天文學家奈爾·德葛拉司·泰森在故事中出場，並指出超人的故鄉氪星所環繞的恆星即為LHS 2520。泰森協助DC漫畫從實際存在的恆星中選出適當的氪星的母恆星，最後選出了位於烏鴉座的LHS 2520^[4]^[5]，並且DC漫畫中超人就讀的高中吉祥物即為烏鴉^[6]。

參考資料

^ ^1.0 ^1.1 Jenkins, J. S.; Ramsey, L. W.; Jones, H. R. A.; Pavlenko, Y.; Gallardo, J.; Barnes, J. R.; Pinfield, D. J. Rotational Velocities for M Dwarfs. The Astrophysical Journal. 2009, 704 (2): 975–88. Bibcode:2009ApJ...704..975J. doi:10.1088/0004-637X/704/2/975.
^ ^2.0 ^2.1 Riedel, Adric R.; Subasavage, John P.; Finch, Charlie T.; Jao, Wei-Chun; Henry, Todd J.; Winters, Jennifer G.; Brown, Misty A.; Ianna, Philip A.; Costa, Edgardo; Mendez, Rene A. The Solar Neighborhood. XXII. Parallax Results from the CTIOPI 0.9 m Program: Trigonometric Parallaxes of 64 Nearby Systems with 0farcs5 <=μ<= 1farcs0 yr-1 (SLOWMO Sample). The Astronomical Journal. 2010, 140 (3): 897–911. Bibcode:2010AJ....140..897R. doi:10.1088/0004-6256/140/3/897.
^ ^3.0 ^3.1 Casagrande, Luca; Flynn, Chris; Bessell, Michael. M dwarfs: effective temperatures, radii and metallicities. Monthly Notices of the Royal Astronomical Society. 2008, 389 (2): 585–607. Bibcode:2008MNRAS.389..585 请检查|bibcode=值 (帮助). doi:10.1111/j.1365-2966.2008.13573.x.
^ Wall, Mike. Superman's Home Planet Krypton 'Found'. Scientific American. 7 November 2012 [2016-03-28]. （原始内容存档于2013-11-15）.
^ Potter, Ned. Superman Home: Planet Krypton 'Found' in Sky. abc news website. ABC News Internet Ventures. 5 November 2012 [31 October 2014]. （原始内容存档于2020-11-11）.
^ Gregorian, Dareh. NYER is 'super' smart. New York Post. 5 November 2012 [31 October 2014]. （原始内容存档于2013-06-17）.

[Jenkins-1] 1.0 ^1.1 Jenkins, J. S.; Ramsey, L. W.; Jones, H. R. A.; Pavlenko, Y.; Gallardo, J.; Barnes, J. R.; Pinfield, D. J. Rotational Velocities for M Dwarfs. The Astrophysical Journal. 2009, 704 (2): 975–88. Bibcode:2009ApJ...704..975J. doi:10.1088/0004-637X/704/2/975.

[reidel-2] 2.0 ^2.1 Riedel, Adric R.; Subasavage, John P.; Finch, Charlie T.; Jao, Wei-Chun; Henry, Todd J.; Winters, Jennifer G.; Brown, Misty A.; Ianna, Philip A.; Costa, Edgardo; Mendez, Rene A. The Solar Neighborhood. XXII. Parallax Results from the CTIOPI 0.9 m Program: Trigonometric Parallaxes of 64 Nearby Systems with 0farcs5 <=μ<= 1farcs0 yr-1 (SLOWMO Sample). The Astronomical Journal. 2010, 140 (3): 897–911. Bibcode:2010AJ....140..897R. doi:10.1088/0004-6256/140/3/897.

[Casagrande-3] 3.0 ^3.1 Casagrande, Luca; Flynn, Chris; Bessell, Michael. M dwarfs: effective temperatures, radii and metallicities. Monthly Notices of the Royal Astronomical Society. 2008, 389 (2): 585–607. Bibcode:2008MNRAS.389..585 请检查|bibcode=值 (帮助). doi:10.1111/j.1365-2966.2008.13573.x.

[4] Wall, Mike. Superman's Home Planet Krypton 'Found'. Scientific American. 7 November 2012 [2016-03-28]. （原始内容存档于2013-11-15）.

[5] Potter, Ned. Superman Home: Planet Krypton 'Found' in Sky. abc news website. ABC News Internet Ventures. 5 November 2012 [31 October 2014]. （原始内容存档于2020-11-11）.

[6] Gregorian, Dareh. NYER is 'super' smart. New York Post. 5 November 2012 [31 October 2014]. （原始内容存档于2013-06-17）.

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