Kappa Pavonis
 
| |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Pavo |
| Right ascension | 18h 56m 57.02788s[1] |
| Declination | −67° 14′ 00.5831″[1] |
| Apparent magnitude (V) | 4.35[2] (3.91 - 4.78[3]) |
| Characteristics | |
| Spectral type | F5 to G5I-II[3] |
| B−V color index | +0.63[2] |
| Variable type | W Vir[3] |
| Astrometry | |
| Radial velocity (Rv) | 37.80[4] km/s |
| Proper motion (μ) | RA: −8.46[1] mas/yr Dec.: 16.47[1] mas/yr |
| Parallax (π) | 6.52 ± 0.77[1] mas |
| Distance | approx. 500 ly (approx. 150 pc) |
| Absolute magnitude (MV) | −2.25[2] |
| Details | |
| Radius | 19[5] R☉ |
| Luminosity | 565[5] L☉ |
| Temperature | 6,100[5] K |
| Metallicity [Fe/H] | −0.5[5] dex |
| Other designations | |
| Database references | |
| SIMBAD | data |
Kappa Pavonis (κ Pav) is a star in the constellation Pavo. It ranges between apparent magnitudes 3.91 and 4.78, and spectral types F5 to G5, over a period of 9.1 days.[3] It is a W Virginis variable—a subtype of type II Cepheid, and is the brightest of its class in the night sky.
References
- 1 2 3 4 5 Van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics 474 (2): 653. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357.
- 1 2 3 Feast, Michael W.; Laney, Clifton D.; Kinman, Thomas D.; Van Leeuwen, Floor; Whitelock, Patricia A. (2008). "The luminosities and distance scales of type II Cepheid and RR Lyrae variables". Monthly Notices of the Royal Astronomical Society 386 (4): 2115. arXiv:0803.0466. Bibcode:2008MNRAS.386.2115F. doi:10.1111/j.1365-2966.2008.13181.x.
- 1 2 3 4 Samus, N. N.; Durlevich, O. V.; et al. (2009). "VizieR Online Data Catalog: General Catalogue of Variable Stars (Samus+ 2007-2013)". VizieR On-line Data Catalog: B/gcvs. Originally published in: 2009yCat....102025S 1. Bibcode:2009yCat....102025S.
- ↑ Gontcharov, G. A. (2006). "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system". Astronomy Letters 32 (11): 759. Bibcode:2006AstL...32..759G. doi:10.1134/S1063773706110065.
- 1 2 3 4 Balog, Z.; Vinko, J.; Kaszas, G. (1997). "Baade-Wesselink Radius Determination of Type II Cepheids". Astronomical Journal v.113 113: 1833. Bibcode:1997AJ....113.1833B. doi:10.1086/118394.
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