31 Aquilae
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Aquila |
| Right ascension | 19h 24m 58.20027s |
| Declination | +11° 56′ 39.8862″ |
| Apparent magnitude (V) | 5.16 |
| Characteristics | |
| Spectral type | G8 IV |
| U−B color index | +0.42 |
| B−V color index | +0.77 |
| Astrometry | |
| Radial velocity (Rv) | −100.5 km/s |
| Proper motion (μ) | RA: +721.02 mas/yr Dec.: +642.49 mas/yr |
| Parallax (π) | 65.89±0.26 mas |
| Distance | 49.5 ± 0.2 ly (15.18 ± 0.06 pc) |
| Absolute magnitude (MV) | +4.26 |
| Details | |
| Mass | 1.16±0.07 M☉ |
| Radius | 1.379±0.042 R☉ |
| Luminosity | 1.904±0.045 L☉ |
| Surface gravity (log g) | 4.18±0.03 cgs |
| Temperature | 5,510±90 K |
| Metallicity [Fe/H] | +0.37 dex |
| Age | 4.5±0.2 Gyr |
| Other designations | |
| BD+11 3833, FK5 1503, HD 182572, GJ 759, NLTT 47763, HIP 95447, HR 7373, LFT 1477, LHS 3463, LTT 15668, NSV 11994, SAO 104807. | |
| Database references | |
| SIMBAD | data |
31 Aquilae (abbreviated 31 Aql) is a star in the equatorial constellation of Aquila. 31 Aquilae is its Flamsteed designation though it also bears the Bayer designation b Aquilae. This star has an apparent visual magnitude of 5.16 and is 49.5 light years from Earth. It has no known companions.