L 1159-16

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L 1159-16
Observation data
Epoch J2000      Equinox J2000
Constellation Aries
Right ascension  02h 00m 12.959s[1]
Declination +13° 03′ 07.01″[1]
Apparent magnitude (V) 12.298[2]
Spectral type M4.5 V[3]
U−B color index +1.37[4]
B−V color index +1.80[4]
R−I color index 1.39
Variable type Flare star
Proper motion (μ) RA: +1092.0[1] mas/yr
Dec.: –1772.9[1] mas/yr
Parallax (π)224.8 ± 2.9[5] mas
Distance14.5 ± 0.2 ly
(4.45 ± 0.06 pc)
Luminosity (bolometric)0.00135[6] L
Rotational velocity (v sin i)3.8[6] km/s
Other designations
TZ Ari, 2MASS J02001278+1303112, GCTP 412.02, GJ 83.1, G 003-033, LHS 11.[7]
Database references

L 1159-16 is a red dwarf in the northern constellation of Aries. With an apparent visual magnitude of 12.298,[2] it is too faint to be seen by the naked eye, although it lies relatively close to the Sun at a distance of about 14.5 light-years (4.4 parsecs).[5] It is a flare star, which means it can suddenly increase in brightness for short periods of time.

See also[edit]


  1. ^ a b c d Zacharias, N.; et al. (2003), "The Second U.S. Naval Observatory CCD Astrograph Catalog (UCAC2)", CDS/ADC Collection of Electronic Catalogues, 1289, Bibcode:2003yCat.1289....0Z.
  2. ^ a b Landolt, Arlo U. (July 1992), "UBVRI photometric standard stars in the magnitude range 11.5-16.0 around the celestial equator", Astronomical Journal, 104 (1): 340–371, 436–491, Bibcode:1992AJ....104..340L, doi:10.1086/116242.
  3. ^ Riaz, Basmah; Gizis, John E.; Harvin, James (August 2006), "Identification of New M Dwarfs in the Solar Neighborhood", The Astronomical Journal, 132 (2): 866–872, arXiv:astro-ph/0606617, Bibcode:2006AJ....132..866R, doi:10.1086/505632.
  4. ^ a b Nicolet, B. (1978), "Photoelectric photometric Catalogue of homogeneous measurements in the UBV System", Astronomy and Astrophysics Supplement Series, 34: 1–49, Bibcode:1978A&AS...34....1N.
  5. ^ a b Van Altena W. F.; Lee J. T.; Hoffleit E. D. (1995). "GCTP 412.02". The General Catalogue of Trigonometric Stellar Parallaxes (Fourth ed.). Retrieved 2014-10-22.
  6. ^ a b McLean, M.; Berger, E.; Reiners, A. (February 2012), "The Radio Activity-Rotation Relation of Ultracool Dwarfs", The Astrophysical Journal, 746 (1): 23, arXiv:1108.0415, Bibcode:2012ApJ...746...23M, doi:10.1088/0004-637X/746/1/23.
  7. ^ "TZ Ari -- Flare Star", SIMBAD Astronomical Database, Centre de Données astronomiques de Strasbourg, retrieved 2012-08-18.

External links[edit]