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)190.93 ± 1.89[1] mas
Distance17.1 ± 0.2 ly
(5.24 ± 0.05 pc)
Absolute magnitude (MV)+12.68
Details
Mass0.19 M☉
Other designations
LTT 17897
G 99-49
G 106-17
NLTT 15908[2]
GJ 3379[3]
PLX 1383.02[4]
TYC 134-605-1[5]
2MASS J06000351+0242236
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. The star is therefore not visible with the naked eye. It is located in the left upper part of the Orion constellation, below Betelgeuse. It's 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).[6]

Distance

GJ 3379 distance estimates

Source Parallax, mas Distance, pc Distance, ly Distance, Pm Ref.
Gliese & Jahreiß (1991) 186.3±6.2 5.37+0.18
−0.17		 17.5±0.6 165.6+5.7
−5.3		 [3]
van Altena et al. (1995) 186.2±10.1 5.37+0.31
−0.28		 17.5+1
−0.9		 165.7+9.5
−8.5		 [4]
Henry et al. (2006) 190.93±1.89 5.24±0.05 17.08±0.17 161.6±1.6 [1]
RECONS TOP100 (2012) 190.77±1.86[nb 1] 5.24±0.05 17.1±0.17 161.7±1.6 [7]
Dittmann et al. (2014) 186.20±5.20 5.37±0.15 17.5±0.5 165.7+4.8
−4.5		 [8]

Non-trigonometric distance estimates are marked in italic. The most precise estimate is marked in bold.

References

  1. ↑ 1.0 1.1 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.
  2. ↑ Luyten, Willem Jacob (1979). "NLTT 15908". NLTT Catalogue.
  3. ↑ 3.0 3.1 Gliese, W. and Jahreiß, H. (1991). "NN 3379". Preliminary Version of the Third Catalogue of Nearby Stars. Retrieved 2014-11-23.
  4. ↑ 4.0 4.1 Van Altena W. F., Lee J. T., Hoffleit E. D. (1995). "GCTP 1383.02". The General Catalogue of Trigonometric Stellar Parallaxes (Fourth ed.). Retrieved 2014-11-23.
  5. ↑ Hog et al. (2000). "TYC 134-605-1". The Tycho-2 Catalogue.
  6. ↑ 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.
  7. ↑ "RECONS TOP100". THE ONE HUNDRED NEAREST STAR SYSTEMS brought to you by RECONS (Research Consortium On Nearby Stars). 2012. Retrieved 2014-11-23.
  8. ↑ 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.

Notes

  1. ↑ Weighted parallax based on parallaxes from van Altena et al. (1995) and Henry et al. (2006).

External links

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