V744 Centauri

V744 Centauri, is a semi-regular variable pulsating star in the constellation Centaurus. Located 3 degrees north north east of Epsilon Centauri, It ranges from apparent magnitude 5.1 to 6.7 over 90 days.[2] It is unusual in that it is a red star with a high proper motion (greater than 50 milliarcseconds a year).[3]

V744 Centauri
Observation data
Epoch J2000      Equinox J2000
Constellation Centaurus
Right ascension  13h 39m 59.80667s[1]
Declination –49° 56′ 59.8395″[1]
Apparent magnitude (V) 5.1-6.7
Characteristics
Spectral type M5III
U−B color index ?
B−V color index ?
Variable type Semiregular variable
Astrometry
Radial velocity (Rv)–10.7 km/s
Proper motion (μ) RA: –100.11 ± 0.24[1] mas/yr
Dec.: 18.74 ± 0.29[1] mas/yr
Parallax (π)6.35 ± 0.33[1] mas
Distance510 ± 30 ly
(157 ± 8 pc)
Details
Mass? M☉
Radius? R☉
Luminosity? L☉
Temperature? K
Metallicity?
Rotation?
Age? years
Other designations
HR 5134, CD-49° 8095, CPC 0 11528, GSC 08269-01422, TYC 8269-1422-1, CPD-49° 6265, HD 118767, HIP 66666, SAO 224317.
Database references
SIMBADdata

References
  1. 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.Vizier catalog entry
  2. Simpson, Phil (2012). Guidebook to the Constellations: Telescopic Sights, Tales, and Myths. New York, New York: Springer Science & Business Media. p. 252. ISBN 978-1-4419-6941-5.
  3. Jiménez-Esteban, F. M.; Caballero, J. A.; Dorda, R.; Miles-Páez, P. A.; Solano, E. (2012). "Identification of red high proper-motion objects in Tycho-2 and 2MASS catalogues using Virtual Observatory tools". Astronomy & Astrophysics. 539: 12. arXiv:1201.5315. Bibcode:2012A&A...539A..86J. doi:10.1051/0004-6361/201118375.


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