IX Carinae
IX Carinae (IX Car) is a red supergiant and pulsating variable star of spectral type M2Iab in the constellation Carina. It is a member of the Carina OB1 association along the Carina Nebula. It is one of the largest stars with a radius of 566 R☉ (394,000,000 km; 2.63 au).[4] If placed at the center of the Solar System, it would extend close to the orbit of the outer Asteroid Belt Jupiter.
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Carina |
| Right ascension | 10h 50m 26.3s[1] |
| Declination | 59° 58′ 56.57″[1] |
| Apparent magnitude (V) | 7.2 - 8.5[2] |
| Characteristics | |
| Spectral type | M2Iab[2] |
| Variable type | SRc[2] |
| Astrometry | |
| Radial velocity (Rv) | 0.90±1.8[3] km/s |
| Proper motion (μ) | RA: –6.054[1] mas/yr Dec.: 2.311[1] mas/yr |
| Parallax (π) | 0.4493 ± 0.0460[1] mas |
| Distance | approx. 7,300 ly (approx. 2,200 pc) |
| Details | |
| Radius | 566[4] R☉ |
| Luminosity | 52,000[4] L☉ |
| Temperature | 3,660±170[4] K |
| Other designations | |
IX Car, CD-59°3368, CPD-59°2775, GSC 08626-01670, HD 94096, HIP 52991, IRAS 10484-5943, 2MASS J10502630-5958563, PPM 339497, SAO 238523, TYC 8626-1670-1 | |
| Database references | |
| SIMBAD | data |
IX Car is a semiregular variable star with a maximum brightness range of magnitude 7.2 - 8.5[2] and a period of 408[2] or 4,400[2] days.
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.
- "GCVS Query=IX Car". General Catalogue of Variable Stars @ Sternberg Astronomical Institute, Moscow, Russia. Retrieved 2018-01-14.
- Gontcharov, G. A.; Massey, Philip; Olsen, K. A. G.; Plez, Bertrand; Josselin, Eric; Maeder, Andre; Meynet, Georges (2006). "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system". Astronomy Letters. 32 (11): 759–771. arXiv:1606.08053. Bibcode:2006AstL...32..759G. doi:10.1134/S1063773706110065. S2CID 119231169.
- Messineo, M.; Brown, A. G. A. (2019). "A Catalog of Known Galactic K-M Stars of Class I Candidate Red Supergiants in Gaia DR2". The Astronomical Journal. 158 (1): 20. arXiv:1905.03744. Bibcode:2019AJ....158...20M. doi:10.3847/1538-3881/ab1cbd. S2CID 148571616.
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