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]
Characteristics
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
Astrometry
Proper motion (μ) RA: +1092.0[1] mas/yr
Dec.: –1772.9[1] mas/yr
Parallax (π) 222 ± 5[5] mas
Distance 14.7 ± 0.3 ly
(4.5 ± 0.1 pc)
Details
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, Glicas 003-033, LHS 11.[7]

L 1159-16 is a red dwarf star 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 our Sun at a distance of about 14.7 light-years (4.5 parsecs).[5] It is a flare star, which means it can suddenly increase in brightness for short periods of time.

See also[edit]

References[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 volume=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 Harrington, R. S.; Dahn, C. C. (April 1980), "Summary of U.S. Naval Observatory parallaxes", Astronomical Journal 85: 454–465, Bibcode:1980AJ.....85..454H, doi:10.1086/112696. 
  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]