HD 93905
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Antlia |
| Right ascension | 10h 49m 57.0188s |
| Declination | −34° 03′ 29.451″ |
| Apparent magnitude (V) | 5.61 |
| Characteristics | |
| Evolutionary stage | main sequence |
| Spectral type | A1 V |
| U−B color index | +0.05 |
| B−V color index | +0.04 |
| Astrometry | |
| Radial velocity (Rv) | −9.5±1.3 km/s |
| Proper motion (μ) | RA: −41.069 mas/yr Dec.: +5.845 mas/yr |
| Parallax (π) | 8.7989±0.1617 mas |
| Distance | 371 ± 7 ly (114 ± 2 pc) |
| Absolute magnitude (MV) | 0.00 |
| Details | |
| Mass | 2.78±0.05 M☉ |
| Radius | 3.89 R☉ |
| Luminosity | 101±9 L☉ |
| Surface gravity (log g) | 3.77 cgs |
| Temperature | 8995+125 −123 K |
| Rotational velocity (v sin i) | 85 km/s |
| Age | 256±6 Myr |
| Other designations | |
| 80 G. Antliae, CD−33°7288, CPD−33°2973, HD 93905, HIP 52965, HR 4238, SAO 201805 | |
| Database references | |
| SIMBAD | data |
HD 93905 (HR 4238) is a solitary star located in the southern constellation Antlia. The star has an absolute magnitude of 0 and an apparent magnitude of 5.61, making it faintly visible to the naked eye under ideal conditions. The star is located 371 light years away based on its parallax shift and is drifting closer with a helocentric radial velocity of −9.6 km/s.
This star has a classification of A1 V, which indicates that it is an ordinary A-type main-sequence star that is fusing hydrogen at its core. At present it has 2.78 times the mass of the Sun but is large and over luminous for its class with 3.89 times and 101 times the radius and luminosity of the Sun respectively. This is because HD 93905 has already completed most of its main sequence lifetime at an age of 256 million years. HD 93905 has a surface temperature of 8,895 K and spins quickly with a projected rotational velocity of 85 km/s.