S Antliae
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Antlia |
| Right ascension | 09h 32m 18.38648s |
| Declination | −28° 37′ 39.9685″ |
| Apparent magnitude (V) | 6.27 to 6.83 |
| Characteristics | |
| Spectral type | A9V |
| B−V color index | 0.33 |
| Variable type | Eclipsing binary W UMa type |
| Astrometry | |
| Proper motion (μ) | RA: −89.375 mas/yr Dec.: +44.049 mas/yr |
| Parallax (π) | 12.6116±0.0203 mas |
| Distance | 258.6 ± 0.4 ly (79.3 ± 0.1 pc) |
| Absolute magnitude (MV) | 1.963 (2.25 + 3.42) |
| Orbit | |
| Period (P) | 0.59145447(30) days |
| Semi-major axis (a) | 3.82±0.02 R☉ |
| Inclination (i) | 74.02±0.14° |
| Semi-amplitude (K1) (primary) | 75±1 km/s |
| Semi-amplitude (K2) (secondary) | 234±1 km/s |
| Details | |
| A | |
| Mass | 1.66±0.10 M☉ |
| Radius | 2.09±0.11 R☉ |
| Luminosity | 10.0±2.2 L☉ |
| Surface gravity (log g) | 4.02±0.03 cgs |
| Temperature | 7,100±200 K |
| B | |
| Mass | 0.55±0.05 M☉ |
| Radius | 1.31±0.06 R☉ |
| Luminosity | 3.4±0.7 L☉ |
| Temperature | 6,859±200 K |
| Age | 1.9 Gyr |
| Other designations | |
| CD-28°7373, HD 82610, SAO 177619, HIP 46810, HR 3798. | |
| Database references | |
| SIMBAD | data |
S Antliae is a W Ursae Majoris-type eclipsing binary star in Antlia.