Gliese 146

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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]
Astrometry
Radial velocity (Rv) +19.5[3] 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
Distance 44.4 ± 0.4 ly
(13.6 ± 0.1 pc)
Characteristics
Evolutionary stage Main Sequence[4]
Spectral type K6.5V[4]
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[5][6]
Details
Radius 0.68[7] R
Surface gravity (log g) 4.74[8] cgs
Temperature 4,136[8] K
Metallicity [Fe/H] 0.11[8] dex
Age 970[9] Myr
Other designations
CD-48 1011, GJ 146, HD 22496, HIP 16711, LTT 1698, SAO 85397.[5]

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]

Its speed relative to the sun is 38.1 km/second, and its galactic orbit ranges between 20,800 and 25,400 light years form the center of the Galaxy. It is a suspected variable star.[5][6] 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[edit]

References[edit]

  1. ^ a b c d e 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. ^ a b c Mermilliod, J.-C. (1986), "Compilation of Eggen's UBV data, transformed to UBV (unpublished)", Catalogue of Eggen's UBV data.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. ^ 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. 
  4. ^ a b 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. 
  5. ^ a b c "HD 22496 -- High proper-motion Star", SIMBAD (Centre de Données astronomiques de Strasbourg), retrieved 2016-06-21 
  6. ^ a b VizieR Detailed Page for NSV=1203
  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. ^ a b c 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. ^ a b 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

External links[edit]