Kappa Normae

Kappa Normae
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Norma
Right ascension 16h 13m 28.72926s[1]
Declination −54° 37′ 49.6865″[1]
Apparent magnitude (V) 4.94[2]
Characteristics
Spectral type G8 III[3]
U−B color index +0.81[2]
B−V color index +1.04[2]
Astrometry
Radial velocity (Rv)−13.5±0.8[4] km/s
Proper motion (μ) RA: −5.14[1] mas/yr
Dec.: −22.86[1] mas/yr
Parallax (π)7.62 ± 0.26[1] mas
Distance430 ± 10 ly
(131 ± 4 pc)
Absolute magnitude (MV)−0.64[5]
Details
Radius18.8 [lower-alpha 1] R☉
Luminosity195[6] L☉
Temperature4,972[6] K
Other designations
κ Nor, CD−54° 6604, FK5 600, HD 145397, HIP 79509, HR 6024, SAO 243454, WDS J16135-5438A[7]
Database references
SIMBADdata

Kappa Normae, Latinized from κ Normae, is a solitary,[3] yellow hued star in the southern constellation of Norma. Its apparent magnitude is 4.94,[2] which is bright enough to be faintly visible to the naked eye. Based upon an annual parallax shift of 7.62 mas as seen from Earth,[1] the system is located about 430 light years distant from the Sun. It is an evolved giant star of spectral type G8III that has swollen and cooled off the main sequence.[7] It shines with a luminosity approximately 195 times that of the Sun and has an effective temperature of 4,972 K.[6]

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, arXiv:0708.1752, Bibcode:2007A&A...474..653V, doi:10.1051/0004-6361:20078357.
  2. 1 2 3 4 Lodén, L. O.; Nordström, B. (1969), "Photometric standard sequences in Norma iII = 320° − 340°", Arkiv för Astronomii, 5: 231–239, Bibcode:1969ArA.....5..231L.
  3. 1 2 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, arXiv:0806.2878, Bibcode:2008MNRAS.389..869E, doi:10.1111/j.1365-2966.2008.13596.x.
  4. ↑ de Bruijne, J. H. J.; Eilers, A.-C. (October 2012), "Radial velocities for the HIPPARCOS-Gaia Hundred-Thousand-Proper-Motion project", Astronomy & Astrophysics, 546: 14, arXiv:1208.3048, Bibcode:2012A&A...546A..61D, doi:10.1051/0004-6361/201219219, A61.
  5. ↑ Anderson, E.; Francis, Ch. (2012), "XHIP: An extended hipparcos compilation", Astronomy Letters, 38 (5): 331, arXiv:1108.4971, Bibcode:2012AstL...38..331A, doi:10.1134/S1063773712050015.
  6. 1 2 3 McDonald, I.; et al. (2012), "Fundamental Parameters and Infrared Excesses of Hipparcos Stars", Monthly Notices of the Royal Astronomical Society, 427 (1): 343–57, arXiv:1208.2037, Bibcode:2012MNRAS.427..343M, doi:10.1111/j.1365-2966.2012.21873.x.
  7. 1 2 "kap Nor". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2017-08-11.

Notes

  1. ↑ Applying the Stefan-Boltzmann Law with a nominal solar effective temperature of 5,772 K:
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