HD 64484
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Volans |
| Right ascension | 07h 49m 40.9911s |
| Declination | −66° 11′ 45.5045″ |
| Apparent magnitude (V) | 5.76±0.01 |
| Characteristics | |
| Evolutionary stage | main sequence |
| Spectral type | B9 V |
| U−B color index | −0.16 |
| B−V color index | −0.04 |
| Astrometry | |
| Radial velocity (Rv) | 11±4.3 km/s |
| Proper motion (μ) | RA: −2.037 mas/yr Dec.: −0.411 mas/yr |
| Parallax (π) | 7.1191±0.0628 mas |
| Distance | 458 ± 4 ly (140 ± 1 pc) |
| Absolute magnitude (MV) | −0.11 |
| Details | |
| Mass | 2.80±0.13 M☉ |
| Radius | 3.3±0.3 R☉ |
| Luminosity | 140±8 L☉ |
| Surface gravity (log g) | 3.86±0.06 cgs |
| Temperature | 10,544±48 K |
| Metallicity [Fe/H] | 0.00 dex |
| Rotational velocity (v sin i) | 154 km/s |
| Age | 339+50 −44 Myr |
| Other designations | |
| 19 G. Volantis, CPD−65°827, FK5 2610, GC 10628, HD 64484, HIP 38210, HR 3081, SAO 249978 | |
| Database references | |
| SIMBAD | data |
HD 64484 (HR 3081) is a solitary star in the southern circumpolar constellation Volans. With an apparent magnitude of 5.76, it is faintly visible to the naked eye under dark skies. Parallax measurements place it at a distance of 458 light years but is receding with a heliocentric radial velocity of 11 km/s.
HD 64484 has a stellar classification of B9 V, indicating that it is an ordinary B-type main-sequence star. It has 2.8 times the mass of the Sun and an effective temperature of 10,544 K, giving it a bluish white hue. However, a slightly enlarged radius of 3.3 R☉ yields a luminosity 140 times that of the Sun. This is due to HD 64484 completing 80.6% of its main sequence lifetime at an age of 339 million years. The star has a solar metallicity and like many hot stars — spins rapidly with a projected rotational velocity of 154 km/s.