| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Pictor |
| Right ascension | 05 22 22.14661 |
| Declination | −56° 08′ 03.8409″ |
| Apparent magnitude (V) | +6.11 |
| Characteristics | |
| Spectral type | B8/9 V |
| B−V color index | −0.10 |
| Astrometry | |
| Radial velocity (Rv) | −5.0±7.4 km/s |
| Proper motion (μ) | RA: −5.03 mas/yr Dec.: +22.01 mas/yr |
| Parallax (π) | 5.14 ± 0.25 mas |
| Distance | 630 ± 30 ly (195 ± 9 pc) |
| Absolute magnitude (MV) | +0.34 |
| Details | |
| Mass | 3.42±0.07 M☉ |
| Luminosity | 210 L☉ |
| Temperature | 11,641 K |
| Rotational velocity (v sin i) | 264 km/s |
| Age | 256 Myr |
| Other designations | |
| κ Pic, CPD−56° 840, FK5 2403, HD 35580, HIP 25098, HR 1801, SAO 233952 | |
| Database references | |
| SIMBAD | data |
κ Pictoris, Latinised as Kappa Pictoris, is a star in the constellation Pictor. It is close to the lower limit of stars that are visible to the naked eye having an apparent visual magnitude of +6.11. Based upon an annual parallax shift of 5.14 mas as seen from Earth, this star is located around 630 light years from the Sun. At that distance, the visual magnitude is diminished by an extinction factor of 0.10 due to interstellar dust.
This is a B-type main sequence star with a stellar classification of B8/9 V. It is about 76.4% of the way through its main sequence lifespan. The star is spinning rapidly with a projected rotational velocity of 264 km/s. It has an estimated 3.4 times the mass of the Sun and is radiating 210 times the Sun's luminosity from its photosphere at an effective temperature of 11,641 K.
References
- ^ 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.
- ^ Johnson, H. L.; et al. (1966), "UBVRIJKL photometry of the bright stars", Communications of the Lunar and Planetary Laboratory, 4 (99): 99, Bibcode:1966CoLPL...4...99J.
- ^ Houk, Nancy (1979), Michigan catalogue of two-dimensional spectral types for the HD stars, vol. 1, Ann Arbor, Michigan: Dept. of Astronomy, University of Michigan, Bibcode:1978mcts.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.
- ^ Gontcharov, G. A. (November 2012), "Spatial distribution and kinematics of OB stars", Astronomy Letters, 38 (11): 694–706, arXiv:1606.09028, Bibcode:2012AstL...38..694G, doi:10.1134/S1063773712110035, S2CID 119108982.
- ^ Zorec, J.; Royer, F. (January 2012), "Rotational velocities of A-type stars. IV. Evolution of rotational velocities", Astronomy & Astrophysics, 537: A120, arXiv:1201.2052, Bibcode:2012A&A...537A.120Z, doi:10.1051/0004-6361/201117691, S2CID 55586789.
- "kap Pic". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2017-06-21.
{{cite web}}: CS1 maint: postscript (link)
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