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.

IX Carinae
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
Distanceapprox. 7,300 ly
(approx. 2,200 pc)
Details
Radius566[4] R☉
Luminosity52,000[4] L☉
Temperature3,660±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
SIMBADdata

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.

See also

References
  1. 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.
  2. "GCVS Query=IX Car". General Catalogue of Variable Stars @ Sternberg Astronomical Institute, Moscow, Russia. Retrieved 2018-01-14.
  3. 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.
  4. 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.



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