Theta Volantis
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Volans |
| Right ascension | 08h 39m 05.16145s |
| Declination | −70° 23′ 12.2826″ |
| Apparent magnitude (V) | 5.19 |
| Characteristics | |
| Spectral type | A0 V |
| U−B color index | −0.03 |
| B−V color index | +0.01 |
| Astrometry | |
| Radial velocity (Rv) | 13.00±4.2 km/s |
| Proper motion (μ) | RA: +19.15 mas/yr Dec.: −38.28 mas/yr |
| Parallax (π) | 13.58±0.20 mas |
| Distance | 240 ± 4 ly (74 ± 1 pc) |
| Absolute magnitude (MV) | +1.21 |
| Details | |
| Mass | 2.3 M☉ |
| Luminosity | 37 L☉ |
| Surface gravity (log g) | 4.08 cgs |
| Temperature | 8,753 K |
| Rotational velocity (v sin i) | 98 km/s |
| Age | 185−364 Myr |
| Other designations | |
| θ Vol, CPD−69°946, FK5 2683, HD 74405, HIP 42425, HR 3460, SAO 256535 | |
| Database references | |
| SIMBAD | data |
Theta Volantis, Latinized from θ Volantis, is a solitary star in the southern constellation of Volans. Based upon parallax measurements, is approximately 240 light years from the Sun. It has an apparent visual magnitude of 5.19, which is bright enough to be faintly visible to the naked eye.
Theta Volantis is an A-type main sequence star with a stellar classification of A0 V and a mass around 2.3 times that of the Sun. It is a young star with an estimated age of a few hundred million years, and is spinning rapidly with a projected rotational velocity of 98 km/s. Theta Volantis shines 37 times as brightly as the Sun, with an effective temperature of 8,753 K in its outer atmosphere.
The star has two optical companions: a magnitude 15.0 star at an angular separation of 22.10″ along a position angle of 58°, and a magnitude 10.64 star at an angular separation of 41.3″ along a position angle of 105° (both as of 2000).