| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Norma |
| Right ascension | 16 13 28.72874 |
| Declination | −54° 37′ 49.6860″ |
| Apparent magnitude (V) | 4.94 |
| Characteristics | |
| Spectral type | G8 III |
| U−B color index | +0.81 |
| B−V color index | +1.04 |
| Astrometry | |
| Radial velocity (Rv) | −13.5±0.8 km/s |
| Proper motion (μ) | RA: −3.845 mas/yr Dec.: −22.366 mas/yr |
| Parallax (π) | 7.4386 ± 0.2471 mas |
| Distance | 440 ± 10 ly (134 ± 4 pc) |
| Absolute magnitude (MV) | −0.64 |
| Details | |
| Radius | 21.8+0.6 −1.5 R☉ |
| Luminosity | 225.7±8.5 L☉ |
| Temperature | 4,787+173 −69 K |
| Other designations | |
| κ Nor, CD−54° 6604, FK5 600, HD 145397, HIP 79509, HR 6024, SAO 243454, WDS J16135-5438A | |
| Database references | |
| SIMBAD | data |
Kappa Normae, Latinized from κ Normae, is a solitary, yellow hued star in the southern constellation of Norma. Its apparent magnitude is 4.94, which is bright enough to be faintly visible to the naked eye. Based upon an annual parallax shift of 7.44 mas as seen from Earth, the system is located about 440 light years from the Sun. It is drifting closer with a radial velocity of 13.5 km/s.
This is an evolved giant star with a stellar classification of G8III that has swollen and cooled off the main sequence. At present it has 22 times the radius of the Sun. It shines with a luminosity approximately 226 times that of the Sun and has an effective temperature of 4,787 K.
References
- ^ Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
- ^ Lodén, L. O.; Nordström, B. (1969), "Photometric standard sequences in Norma i = 320° − 340°", Arkiv för Astronomi, 5: 231–239, Bibcode:1969ArA.....5..231L.
- ^ Houk, Nancy (1978), Michigan catalogue of two-dimensional spectral types for the HD stars, vol. 1, Ann Arbor: Dept. of Astronomy, University of Michigan, Bibcode:1975mcts.book.....H.
- ^ 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, S2CID 59451347, A61.
- 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, S2CID 119257644.
- "kap Nor". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2017-08-11.
{{cite web}}: CS1 maint: postscript (link) - 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, S2CID 14878976.
- 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, S2CID 18759600.
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