8 Aquarii
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Aquarius |
| Right ascension | 20h 59m 54.826s |
| Declination | −13° 03′ 05.87″ |
| Apparent magnitude (V) | 6.60 |
| Characteristics | |
| Spectral type | A3/4 IV |
| B−V color index | 0.177±0.007 |
| Astrometry | |
| Proper motion (μ) | RA: −31.787 mas/yr Dec.: −6.566 mas/yr |
| Parallax (π) | 10.9478±0.1472 mas |
| Distance | 298 ± 4 ly (91 ± 1 pc) |
| Absolute magnitude (MV) | 1.91 |
| Details | |
| Mass | 1.9 M☉ |
| Radius | 2.27 R☉ |
| Luminosity | 19 L☉ |
| Surface gravity (log g) | 4.06 cgs |
| Temperature | 8,008 K |
| Metallicity [Fe/H] | 0.11 dex |
| Other designations | |
| BD−13°5813, HD 199828, HIP 103640, SAO 164046 | |
| Database references | |
| SIMBAD | data |
8 Aquarii (abbreviated 8 Aqr) is a blue-white sub-giant of the spectral class A4IV in the constellation Aquarius. 8 Aquarii is the Flamsteed designation. It is approximately 298 light-years away from Earth, based on parallax. It is approximately 1.7 solar masses and about 3 times hotter than the Sun and thus allows lines of ionized metals with an abundance of metals.