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LHS 2520
Observation data
Epoch J2000       Equinox J2000
Constellation Corvus
Right ascension 12h 10m 05.597s
Declination −15° 04′ 15.66″
Apparent magnitude (V) 12.12
Spectral type M3.5V [1]
Proper motion (μ) RA: −65  mas/ yr
Dec.: −710  mas/ yr
Parallax (π)77.93 ± 2.41  mas [2]
Distance42 ± 1  ly
(12.8 ± 0.4  pc)
Temperature3024 [3]  K
Other designations
LHS 2520, GJ 3707, LP 734-32.
Database references

LHS 2520, also known as Gliese 3707, is a red dwarf star in the constellation Corvus. With an apparent magnitude of 12.12, it is too faint to be seen with the unaided eye. A cool star of spectral type M3.5V, [1] it has a surface temperature of 3024 K. [3] The star was too faint to have had its parallax measured by the Hipparcos satellite. Earth-based measurement gives its parallax as 77.93 ± 2.41 milliarcseconds, yielding a distance of 42 ± 1 light-years. [2]

In Popular Culture

In Action Comics #14 (January 2013), which was published 7 November 2012, Neil Degrasse Tyson appears in the story, in which he determines that Superman's home planet, Krypton, orbited LHS 2520. Tyson assisted DC Comics in selecting a real-life star that would be an appropriate parent star to Krypton, and picked the star in Corvus, [4] [5] and which is the mascot of Superman's high school, the Smallville Crows. [6]

The Star also appears as LP 734-32 in the 2014 game, Elite Dangerous. [7]


  1. ^ a b Jenkins, J. S.; Ramsey, L. W.; Jones, H. R. A.; Pavlenko, Y.; Gallardo, J.; Barnes, J. R.; Pinfield, D. J. (2009). "Rotational Velocities for M Dwarfs". The Astrophysical Journal. 704 (2): 975–88. arXiv: 0908.4092. Bibcode: 2009ApJ...704..975J. doi: 10.1088/0004-637X/704/2/975. S2CID  119203469.
  2. ^ a b 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. (2010). "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. 140 (3): 897–911. arXiv: 1008.0648. Bibcode: 2010AJ....140..897R. doi: 10.1088/0004-6256/140/3/897. S2CID  119183935.
  3. ^ a b Casagrande, Luca; Flynn, Chris; Bessell, Michael (2008). "M dwarfs: effective temperatures, radii and metallicities". Monthly Notices of the Royal Astronomical Society. 389 (2): 585–607. arXiv: 0806.2471. Bibcode: 2008MNRAS.389..585C. doi: 10.1111/j.1365-2966.2008.13573.x. S2CID  14353142.
  4. ^ Wall, Mike (7 November 2012). "Superman's Home Planet Krypton 'Found'". Scientific American.
  5. ^ Potter, Ned (5 November 2012). "Superman Home: Planet Krypton 'Found' in Sky". abc news website. ABC News Internet Ventures. Retrieved 31 October 2014.
  6. ^ Gregorian, Dareh (5 November 2012). "NYER is 'super' smart". New York Post. Retrieved 31 October 2014.
  7. ^ u/Mark0sky (8 September 2014). "Soon we should be able to visit Superman home system. Here it is on the Galaxy Map".{{ cite web}}: CS1 maint: url-status ( link)