Eta Volantis
Star in the constellation Volans
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Eta Volantis, Latinized from η Volantis, is a single star[12] in the southern constellation of Volans. It has an apparent visual magnitude of 5.28,[13] 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.[4]
 | |
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Volans |
| Right ascension | 08h 22m 04.45155s[1] |
| Declination | −73° 23′ 59.9258″[1] |
| Apparent magnitude (V) | 5.28±0.01 |
| Characteristics | |
| Spectral type | A0/1 IV/V[2] |
| B−V color index | +0.01[3] |
| Astrometry | |
| Radial velocity (Rv) | +20.0±3.7[4] km/s |
| Proper motion (μ) | RA: −29.432[1] mas/yr Dec.: +29.926[1] mas/yr |
| Parallax (π) | 8.4310±0.0887 mas[1] |
| Distance | 387 ± 4 ly (119 ± 1 pc) |
| Absolute magnitude (MV) | −0.06[5] |
| Details | |
| Mass | 2.73±0.08[6] M☉ |
| Radius | 3.78±0.12[7] R☉ |
| Luminosity | 84[8] L☉ |
| Surface gravity (log g) | 3.81±0.04[6] cgs |
| Temperature | 9,789±427[9] K |
| Rotational velocity (v sin i) | 214[10] km/s |
| Age | 347[6] Myr |
| Other designations | |
| η Vol, CPD−72°694, FK5 2653, HD 71576, HIP 41003, HR 3334, SAO 256505[11] | |
| Database references | |
| SIMBAD | data |
This is an A-type star with a stellar classification of A0/1 IV/V,[2] 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[6] and is spinning rapidly with a projected rotational velocity of 214 km/s.[10] It has 2.73 times the mass of the Sun[6] and 3.43 times the Sun's radius.[7] Eta Volantis is radiating 84[8] times the luminosity of the Sun from its photosphere at an effective temperature of 9,789 K.[9]
Eta Volantis has two 12th magnitude optical companions at angular separations of 26.8 and 48.1 arcseconds.[14]