LHS 2520

**LHS 2520**
观测资料; 历元 J2000
星座	乌鸦座
星官
赤经	12h 10m 05.597s
赤纬	−15° 04′ 15.66″
视星等（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)
详细资料
温度	3024 K
其他命名
	LHS 2520, GJ 3707, LP 734-32.

LHS 2520，或称为格利泽3707（Gliese 3707），是一颗位于乌鸦座的红矮星。该恒星的视星等是肉眼不可见的12.12，光谱型为M3.5V^[1]，表面温度3024 K^[3]。它因为亮度过低，无法以依巴谷卫星进行视差量测。地面望远镜量测结果显示该恒星视差为77.93 ± 2.41 毫角秒，即距离地球42 ± 1光年^[2]。

大众文化中的LHS 2520

2012年11月7日出刊的《动作漫画》 #14（2013年1月号）中，天文学家奈尔·德葛拉司·泰森在故事中出场，并指出超人的故乡氪星所环绕的恒星即为LHS 2520。泰森协助DC漫画从实际存在的恒星中选出适当的氪星的母恒星，最后选出了位于乌鸦座的LHS 2520^[4]^[5]，并且DC漫画中超人就读的高中吉祥物即为乌鸦^[6]。

参考资料

^ ^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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