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.[3] It is unusual in that it is a red star with a high proper motion (greater than 50 milliarcseconds a year).[4] When it is near its maximum brightness, it is visible to the naked eye under good observing conditions.
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Centaurus |
| Right ascension | 13h 39m 59.80667s[2] |
| Declination | −49° 56′ 59.8395″[2] |
| Apparent magnitude (V) | 5.1-6.7 |
| Characteristics | |
| Spectral type | M5III |
| Variable type | Semiregular variable |
| Astrometry | |
| Radial velocity (Rv) | −10.7 km/s |
| Proper motion (μ) | RA: −100.11±0.24[2] mas/yr Dec.: +18.74±0.29[2] mas/yr |
| Parallax (π) | 6.35±0.33 mas[2] |
| Distance | 510 ± 30 ly (157 ± 8 pc) |
| Other designations | |
| CD−49°8095, CPD−49°6265, HD 118767, HIP 66666, HR 5134, SAO 224317, TYC 8269-1422-1, GSC 08269-01422 | |
| Database references | |
| SIMBAD | data |
In 1964, Wolfgang Strohmeier et al. announced the discovery that the star is a variable star.[5] It was given its variable star designation, V744 Centauri, in 1968.[6]
References
edit- ↑ "ASAS All Star Catalogue". The All Sky Automated Survey. Retrieved 8 December 2021.
- 1 2 3 4 5 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. S2CID 18759600.Vizier catalog entry
- ↑ 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.
- ↑ 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. S2CID 53404166.
- ↑ Strohmeier, W.; Knigge, R.; Ott, H. (November 1964). "Bright Southern BV-Stars" (PDF). Information Bulletin on Variable Stars. 74. Bibcode:1964IBVS...74....1S. Retrieved 16 January 2025.
- ↑ Kukarkin, B. V.; Efremov, Yu. N.; Frolov, M. S.; Medvedeva, G. I.; Kholopov, P. N.; Kurochkin, N. E.; Kukarkina, N. P.; Perova, N. B.; Fedorovich, V. P. (November 1968). "Identification List of the New Variable Stars Nominated in 1968" (PDF). Information Bulletin on Variable Stars. 311. Bibcode:1968IBVS..311....1K. Retrieved 16 January 2025.
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