HD 210434
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Aquarius |
| Right ascension | 22h 10m 33.74708s |
| Declination | −04° 16′ 00.6788″ |
| Apparent magnitude (V) | 5.979 |
| Characteristics | |
| Evolutionary stage | red giant branch |
| Spectral type | G8/K0III |
| U−B color index | 0.84 |
| B−V color index | 0.981 |
| Astrometry | |
| Radial velocity (Rv) | −18.1 km/s |
| Proper motion (μ) | RA: +70.600 mas/yr Dec.: +3.340 mas/yr |
| Parallax (π) | 10.3957±0.0439 mas |
| Distance | 314 ± 1 ly (96.2 ± 0.4 pc) |
| Absolute magnitude (MV) | 1.30 |
| Details | |
| Mass | 2.5 M☉ |
| Radius | 8.5 R☉ |
| Luminosity | 40 L☉ |
| Surface gravity (log g) | 2.91 cgs |
| Temperature | 4,910 K |
| Metallicity [Fe/H] | 0.090±0.090 dex |
| Rotational velocity (v sin i) | 3.3 km/s |
| Age | 557 Myr |
| Other designations | |
| BD−04°5625, HD 210434, HIP 109466, HR 8453, SAO 145916 | |
| Database references | |
| SIMBAD | data |
HD 210434 is a giant star in the equatorial constellation of Aquarius. According to the Bortle scale, an apparent magnitude of six means this star is faintly visible to the naked eye from dark rural skies. It is an estimated 557 million years old with 2.4 times the mass of the Sun.