V Crucis

V Crucis is a carbon star in the constellation Crux. A Mira variable, its apparent magnitude ranges from 8.7 to 11.1 over 376.5 days.[3]

V Crucis

Observation data Epoch J2000.0      Equinox J2000.0
Constellation	Crux
Right ascension	12^h 56^m 35.559^s[1]
Declination	−57° 53′ 57.02″[1]
Apparent magnitude (V)	8.74 - 11.13[2]
Characteristics
Spectral type	Ce(Ne)[3]
Variable type	Mira[3]
Astrometry
Radial velocity (Rv)	−19.90[4] km/s
Proper motion (μ)	RA: 0.507[1] mas/yr Dec.: 1.989[1] mas/yr
Parallax (π)	0.7451 ± 0.0475[1] mas
Distance	4,400 ± 300 ly (1,340 ± 90 pc)
Absolute magnitude (MV)	-4.67[5]
Details
Radius	130[1] R☉
Luminosity	7,244[6] L☉
Temperature	3,075[6] K
Other designations
V Cru, CD−57°4791, HD 112319, HIP 63175, IRAS 12536-5737, 2MASS J12563556-5753569[7]
Database references
SIMBAD	data

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. Pojmanski, G. (2002). "The All Sky Automated Survey. Catalog of Variable Stars. I. 0 h - 6 hQuarter of the Southern Hemisphere". Acta Astronomica. 52: 397–427. arXiv:astro-ph/0210283. Bibcode:2002AcA....52..397P.
3. "V Crucis". AAVSO Website. American Association of Variable Star Observers. 4 January 2010. Retrieved 2019-12-11.
4. Gontcharov, G. A. (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.
5. Guandalini, R.; Cristallo, S. (2013). "Luminosities of carbon-rich asymptotic giant branch stars in the Milky Way". Astronomy and Astrophysics. 555: A120. arXiv:1305.4203. Bibcode:2013A&A...555A.120G. doi:10.1051/0004-6361/201321225.
6. Bergeat, J.; Knapik, A.; Rutily, B. (2002). "Carbon-rich giants in the HR diagram and their luminosity function". Astronomy and Astrophysics. 390 (3): 967–986. Bibcode:2002A&A...390..967B. doi:10.1051/0004-6361:20020525.
7. "V Cru". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2019-12-11.