Kappa Gruis

Kappa Gruis
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Grus
Right ascension 23h 04m 39.62808s[1]
Declination −53° 57′ 53.6576″[1]
Apparent magnitude (V) 5.37[2]
Characteristics
Spectral type K5 III[3]
B−V color index +1.45[2]
Astrometry
Radial velocity (Rv)+17.7±0.8[4] km/s
Proper motion (μ) RA: +57.74[1] mas/yr
Dec.: −106.10[1] mas/yr
Parallax (π)8.96 ± 0.37[1] mas
Distance360 ± 20 ly
(112 ± 5 pc)
Absolute magnitude (MV)−1.04[5]
Details
Luminosity525[5] L☉
Other designations
κ Gru, CPD−54° 10197, FK5 3845, HD 217902, HIP 113957, HR 8774, SAO 247711[6]
Database references
SIMBADdata

κ Gruis, Latinised as Kappa Gruis, is a solitary,[7] orange-hued star in the southern constellation of Grus. With an apparent magnitude of 5.37,[2] it is bright enough to be faintly visible to the naked eye. The distance to this system, as determined from an annual parallax shift of 8.96 mas as seen from the Earth,[1] is roughly 360 light years. This is an evolved K-type giant star on the asymptotic giant branch with a stellar classification of K5 III. It is a member of the Arcturus moving group.[5]

References

  1. 1 2 3 4 5 6 van Leeuwen, F. (2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics, 474 (2): 653–664, Bibcode:2007A&A...474..653V, arXiv:0708.1752 Freely accessible, doi:10.1051/0004-6361:20078357.
  2. 1 2 3 Corben, P. M.; Stoy, R. H. (1968), "Photoelectric Magnitudes and Colours for Bright Southern Stars", Monthly Notes of the Astronomical Society of Southern Africa, 27: 11, Bibcode:1968MNSSA..27...11C.
  3. ↑ Houk, Nancy; Cowley, A. P. (1979), Michigan catalogue of two-dimensional spectral types for the HD stars, 1, Ann Arbor, Michigan: Dept. of Astronomy, University of Michigan, Bibcode:1978mcts.book.....H.
  4. ↑ Gontcharov, G. A. (November 2006), "Pulkovo Compilation of Radial Velocities for 35495 Hipparcos stars in a common system", Astronomy Letters, 32 (11): 759–771, Bibcode:2006AstL...32..759G, doi:10.1134/S1063773706110065.
  5. 1 2 3 Eggen, Olin J.; Iben, Icko, Jr. (April 1991), "First giant branch and asymptotic giant branch stars in nearby aggregates", Astronomical Journal, 101: 1377−1407, Bibcode:1991AJ....101.1377E, doi:10.1086/115773.
  6. ↑ "kap Gru -- Star", SIMBAD Astronomical Database, Centre de Données astronomiques de Strasbourg, retrieved 2017-06-26.
  7. ↑ Eggleton, P. P.; Tokovinin, A. A. (September 2008), "A catalogue of multiplicity among bright stellar systems", Monthly Notices of the Royal Astronomical Society, 389 (2): 869–879, Bibcode:2008MNRAS.389..869E, arXiv:0806.2878 Freely accessible, doi:10.1111/j.1365-2966.2008.13596.x.
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