T Antliae
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Antlia |
| Right ascension | 09h 33m 50.85888s[1] |
| Declination | −36° 36′ 56.7458″[1] |
| Apparent magnitude (V) | 9.26[2] |
| Characteristics | |
| Spectral type | F6 Iab |
| Variable type | Cepheid |
| Astrometry | |
| Parallax (π) | 1.02 ± 1.49[1] mas |
| Distance | 7498 ly (2300 pc) |
| Details | |
| Mass | 3? / 0.7 M☉ |
| Rotation | ~9 km/s |
| Age | ~79 Million years |
| Other designations | |
| Database references | |
| SIMBAD | data |
T Antliae (also abbreviated T Ant) is a Cepheid variable star 2.3 kiloparsecs away from the Sun in the constellation of Antlia. A yellow-white supergiant with a spectral type of F6Iab, it ranges between apparent magnitude 8.88 and 9.82 over a period of 5.89820 days.[3]
Stellar system
The F-type supergiant also forms a binary system with an unseen stellar companion with putative mass of 70% Solar mass. Such a stellar component could likely take 42.4 years to complete its orbit around the Cepheid (semimajor axis around 10.8 Astronomical Units).[4]
References
- 1 2 3 van Leeuwen, F.; et al. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. Bibcode:2007A&A...474..653V. arXiv:0708.1752
. doi:10.1051/0004-6361:20078357. - ↑ Høg, E.; et al. (2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics. 355: L27–L30. Bibcode:2000A&A...355L..27H.
- ↑ Watson, Christopher (4 January 2010). "T Antliae". AAVSO Website. American Association of Variable Star Observers. Retrieved 25 July 2014.
- ↑ Turner, D. G. & Berdnikov, L. N. (2003). "The nature of the Cepheid T Antliae". Astronomy and Astrophysics. 407 (1): 325–34. Bibcode:2003A&A...407..325T. doi:10.1051/0004-6361:20030835.
Coordinates: 
09h 33m 50.86s, −36° 36′ 56.8″
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