GJ 3379

GJ 3379
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Orion
Right ascension 06h 00m 3.495s
Declination +02° 42′ 23.67″
Apparent magnitude (V) +11.33
Characteristics
Spectral type M3.5V
Astrometry
Radial velocity (Rv)+30.0 km/s
Parallax (π)193.60 ± 1.85[1] mas
Distance16.8 ± 0.2 ly
(5.17 ± 0.05 pc)
Absolute magnitude (MV)+12.68
Details
Mass0.19 M☉
Other designations
GJ 3379, G 99-49, G 106-17, LTT 17897, NLTT 15908, PLX 1383.02, TYC 134-605-1, 2MASS J06000351+0242236[2]
Database references
SIMBADdata

GJ 3379 (Giclas 99-49) is the nearest star in the Orion constellation, being around 17.5 lightyears away from the Sun. The main sequence star is a red dwarf with the spectral class M3.5V. It has an apparent magnitude of 11.33 and an absolute magnitude of 12.68, therefore, the star is not visible with the naked eye. It is located in the left upper part of the Orion constellation, below Betelgeuse. Its radial velocity is +30.0 kilometers per second. According to the SIMBAD database, the star is classified as a flare star.

In the past, this star may have had a close encounter with the Solar System. Some 163,000 ± 3,000 years ago, it achieved a minimum distance of 4.30 ± 0.10 ly (1.32 ± 0.03 pc).[3]

References

  1. ↑ Davison, Cassy L.; White, Russel J.; Henry, Todd J.; Riedel, Adric R.; Jao, Wei-Chun; Bailey III, John I.; Quinn, Samuel N.; Justin R., Cantrell; John P., Subasavage; Jen G., Winters (2015). "A 3D Search for Companions to 12 Nearby M-Dwarfs". The Astronomical Journal. 149 (3): 106. arXiv:1501.05012 [astro-ph.SR]. Bibcode:2015AJ....149..106D. doi:10.1088/0004-6256/149/3/106. Cite uses deprecated parameter |class= (help)
  2. ↑ "G 99-49". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 18 August 2017.
  3. ↑ Bobylev, V. V. (November 2010). "Stars outside the Hipparcos list closely encountering the Solar system". Astronomy Letters. 36 (11): 816–822. arXiv:1009.4856. Bibcode:2010AstL...36..816B. doi:10.1134/S1063773710110071.
  • Henry, T. J.; Jao, Wei-Chun; Subasavage, John P.; Beaulieu, Thomas D.; Ianna, Philip A.; Costa, Edgardo; Méndez, René A. (2006). "The Solar Neighborhood. XVII. Parallax Results from the CTIOPI 0.9 m Program: 20 New Members of the RECONS 10 Parsec Sample". The Astronomical Journal. 132 (6): 2360–2371. arXiv:astro-ph/0608230. Bibcode:2006AJ....132.2360H. doi:10.1086/508233.
  • Dittmann, Jason A.; Irwin, Jonathan M.; Charbonneau, David; Berta-Thompson, Zachory K. (2014). "Trigonometric Parallaxes for 1507 Nearby Mid-to-late M Dwarfs". The Astrophysical Journal. 784 (2): 156. arXiv:1312.3241. Bibcode:2014ApJ...784..156D. doi:10.1088/0004-637X/784/2/156. Table with parallaxes.

Coordinates: 06h 00m 3.495s, +02° 42′ 23.67″


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