Eta Volantis
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Volans |
| Right ascension | 08h 22m 04.45155s |
| Declination | −73° 23′ 59.9258″ |
| Apparent magnitude (V) | 5.28±0.01 |
| Characteristics | |
| Spectral type | A0/1 IV/V |
| B−V color index | +0.01 |
| Astrometry | |
| Radial velocity (Rv) | +20.0±3.7 km/s |
| Proper motion (μ) | RA: −29.432 mas/yr Dec.: +29.926 mas/yr |
| Parallax (π) | 8.4310±0.0887 mas |
| Distance | 387 ± 4 ly (119 ± 1 pc) |
| Absolute magnitude (MV) | −0.06 |
| Details | |
| Mass | 2.73±0.08 M☉ |
| Radius | 3.78±0.12 R☉ |
| Luminosity | 84 L☉ |
| Surface gravity (log g) | 3.81±0.04 cgs |
| Temperature | 9,789±427 K |
| Rotational velocity (v sin i) | 214 km/s |
| Age | 347 Myr |
| Other designations | |
| η Vol, CPD−72°694, FK5 2653, HD 71576, HIP 41003, HR 3334, SAO 256505 | |
| Database references | |
| SIMBAD | data |
Eta Volantis, Latinized from η Volantis, is a single star in the southern constellation of Volans. It has an apparent visual magnitude of 5.28, which is bright enough to be seen with the naked eye as a dim, white-hued star. Based upon parallax measurements, it is approximately 387 light years from the Sun. The star is moving further away from the Sun with a radial velocity of 20 km/s.
This is an A-type star with a stellar classification of A0/1 IV/V, displaying blended spectrum that shows aspects of a main sequence star and a subgiant. Stellar evolution models from Zorec and Royer (2012) place it near the main sequence turnoff, having completed 90.7% of its time on the main sequence. The star is estimated to be 347 million years old and is spinning rapidly with a projected rotational velocity of 214 km/s. It has 2.73 times the mass of the Sun and 3.43 times the Sun's radius. Eta Volantis is radiating 84 times the luminosity of the Sun from its photosphere at an effective temperature of 9,789 K.
Eta Volantis has two 12th magnitude optical companions at angular separations of 26.8 and 48.1 arcseconds.