LHS 292

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LHS 292
LHS 292 rendering.png

Generic rendering of LHS 292 flare star
Observation data
Epoch J2000      Equinox J2000
Constellation Sextans
Right ascension 10h 48m 12.6s[1]
Declination −11° 20′ 14″[1]
Apparent magnitude (V) 15.73[1]
Characteristics
Spectral type M6.5 V
Apparent magnitude (J) 8.9[2]
B−V color index 2.10
Variable type Flare star
Astrometry
Parallax (π) 220.30 ± 3.60[1] mas
Distance 14.8 ± 0.2 ly
(4.54 ± 0.07 pc)
Absolute magnitude (MV) 17.45[1]
Details
Mass 0.08[1] M
Radius 0.11? R
Luminosity 0.00069[3] L
Temperature 2650-2900[3] K
Other designations
LP 731-58, GJ 3622, GCTP 2516.02

LHS 292 is a red dwarf in the constellation Sextans. It is far too faint to be seen with the unaided eye and requires a large amateur telescope to be seen visually. It lies relatively close to the Sun at a distance of about 14.8 light years. It is a flare star, which means it can suddenly increase in brightness for short periods of time.

It has the space velocity components [U, V, W] = [28, −16, −14] km/s.[4]

Distance[edit]

LHS 292 distance estimates

Source Parallax, mas Distance, pc Distance, ly Ref.
Gliese & Jahreiß (1991) 221.0 ± 3.6 4.52 ± 0.07 14.76 ± 0.24 [5]
van Altena et al. (1995) 220.3 ± 3.6 4.54+0.08
−0.07
14.81+0.25
−0.24
[6]
RECONS TOP100 (2012) 220.30 ± 3.60[note 1] 4.54+0.08
−0.07
14.81+0.25
−0.24
[7]

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

See also[edit]

References[edit]

  1. ^ a b c d e f Research Consortium on Nearby Stars, GSU (2007-09-17). "The One Hundred Nearest Star Systems". RECONS. Retrieved 2007-11-06. 
  2. ^ "LHS 292". SIMBAD Astronomical Database. Retrieved 2012-06-12. 
  3. ^ a b Golimowski et al. (2004). "L' and M' Photometry of Ultracool Dwarfs". The Astrophysical Journal 127 (6): 3516–3536. arXiv:astro-ph/0402475. Bibcode:2004AJ....127.3516G. doi:10.1086/420709. 
  4. ^ Reiners, A.; Basri, G. (November 2009). "A Volume-Limited Sample of 63 M7-M9.5 Dwarfs. I. Space Motion, Kinematic Age, and Lithium". The Astrophysical Journal 705 (2): 1416–1424. arXiv:0909.4647. Bibcode:2009ApJ...705.1416R. doi:10.1088/0004-637X/705/2/1416. 
  5. ^ Gliese, W. and Jahreiß, H. (1991). "NN 3622". Preliminary Version of the Third Catalogue of Nearby Stars. Retrieved 2014-10-22. 
  6. ^ Van Altena W. F., Lee J. T., Hoffleit E. D. (1995). "GCTP 2516.02". The General Catalogue of Trigonometric Stellar Parallaxes, Fourth Edition. Retrieved 2014-10-22. 
  7. ^ "RECONS TOP100". THE ONE HUNDRED NEAREST STAR SYSTEMS brought to you by RECONS (Research Consortium On Nearby Stars). 2012. Retrieved 2014-10-22. 

Notes[edit]

  1. ^ Parallax from van Altena et al. (1995).

External links[edit]