Gliese 146

Gliese 146 is a K5V class star located in the constellation Horologium. At 44.4 light years, GJ 146 has an apparent magnitude of +8.57. Gliese 146 is also known as HD 22496, HIP 16711, SAO-216392, and LHS 1563.[10]

Gliese 146
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Horologium
Right ascension  03h 35m 00.93995s[1]
Declination −48° 25′ 08.9046″[1]
Apparent magnitude (V) 8.64[2]
Characteristics
Evolutionary stage Main Sequence[3]
Spectral type K6.5V[3]
U−B color index +1.24[2]
B−V color index +1.30[2]
Variable type suspected, range 8.57 to 8.7 mag, NSV 1203[4][5]
Astrometry
Radial velocity (Rv)+19.5[6] km/s
Proper motion (μ) RA: 404.71[1] mas/yr
Dec.: 308.13[1] mas/yr
Parallax (π)73.49 ± 0.71[1] mas
Distance44.4 ± 0.4 ly
(13.6 ± 0.1 pc)
Details
Radius0.68[7] R☉
Surface gravity (log g)4.74[8] cgs
Temperature4,136[8] K
Metallicity [Fe/H]0.11[8] dex
Age970[9] Myr
Other designations
CD−48° 1011, GJ 146, HD 22496, HIP 16711, LTT 1698, SAO 85397.[4]
Database references
SIMBADdata
ARICNSdata

Its speed relative to the sun is 38.1 km/second, and its galactic orbit ranges between 20,800 and 25,400 light years from the center of the Galaxy. It is a suspected variable star.[4][5] It belongs to the Hyades supercluster of stars[11] It is one of 155 K type stars within 50 light years.[10] It is one of 500 stars selected for the SCUBA-2 All Sky Survey for stars with debris disks.[12]

See also

References
  1. van Leeuwen, F. (November 2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics, 474 (2): 653–664, arXiv:0708.1752, Bibcode:2007A&A...474..653V, doi:10.1051/0004-6361:20078357.
  2. Mermilliod, J.-C. (1986), "Compilation of Eggen's UBV data, transformed to UBV (unpublished)", Catalogue of Eggen's UBV Data. SIMBAD, Bibcode:1986EgUBV........0M.
  3. Gray, R.O.; et al. (July 2006), "Contributions to the Nearby Stars (NStars) Project: spectroscopy of stars earlier than M0 within 40 pc-The Southern Sample", The Astronomical Journal, 132 (1): 161–170, arXiv:astro-ph/0603770, Bibcode:2006AJ....132..161G, doi:10.1086/504637.
  4. "HD 22496 -- High proper-motion Star", SIMBAD, Centre de Données astronomiques de Strasbourg, retrieved 2016-06-21
  5. VizieR Detailed Page for NSV=1203
  6. Evans, D. S. (June 20–24, 1966), Batten, Alan Henry; Heard, John Frederick (eds.), "The Revision of the General Catalogue of Radial Velocities", Determination of Radial Velocities and their Applications, Proceedings from IAU Symposium no. 30, University of Toronto: International Astronomical Union, Bibcode:1967IAUS...30...57E.
  7. Pasinetti Fracassini, L. E.; et al. (February 2001), "Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS) - Third edition - Comments and statistics", Astronomy and Astrophysics, 367 (2): 521–524, arXiv:astro-ph/0012289, Bibcode:2001A&A...367..521P, doi:10.1051/0004-6361:20000451.
  8. Franchini, M.; et al. (July 2014), "The FEROS-Lick/SDSS observational data base of spectral indices of FGK stars for stellar population studies", Monthly Notices of the Royal Astronomical Society, 442 (1): 220–228, arXiv:1405.0953, Bibcode:2014MNRAS.442..220F, doi:10.1093/mnras/stu873.
  9. Vican, Laura (June 2012), "Age Determination for 346 Nearby Stars in the Herschel DEBRIS Survey", The Astronomical Journal, 143 (6): 135, arXiv:1203.1966, Bibcode:2012AJ....143..135V, doi:10.1088/0004-6256/143/6/135.
  10. K stars within 100 light-years - SolStation.com
  11. siblings of HD 22496 (SIMBAD)
  12. N. M. Phillips, J. S. Greaves, W. R. F. Dent, B. C. Matthews, W. S. Holland, M. C. Wyatt, B. Sibthorpe Target selection for the SUNS and DEBRIS surveys for debris discs in the solar neighbourhood
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