LHS 2520

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LHS 2520
Observation data
Epoch J2000      Equinox J2000
Constellation Corvus
Right ascension 12h 10m 05.60124s[1]
Declination −15° 04′ 16.9613″[1]
Apparent magnitude (V) 12.12
Characteristics
Spectral type M3.5V[2]
Astrometry
Radial velocity (Rv)80.47±0.26[1] km/s
Proper motion (μ) RA: −56.437 mas/yr[1]
Dec.: −712.957 mas/yr[1]
Parallax (π)81.5703 ± 0.0354 mas[1]
Distance39.98 ± 0.02 ly
(12.259 ± 0.005 pc)
Details
Temperature3024[3] K
Other designations
LHS 2520, GJ 3707, LP 734-32
Database references
SIMBADdata
ARICNSdata

LHS 2520, also known as GJ 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,[2] it has a surface temperature of 3024 K.[3] The star was too faint to have had its parallax measured by the Hipparcos satellite. Measurement by Gaia gives its parallax as 81.57±0.04 milliarcseconds, yielding a distance of 40 light-years (12 parsecs).[1]

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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]

References

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  1. ^ a b c d e f Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.
  2. ^ 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.
  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: numeric names: authors list (link)
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