HD 221148
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Aquarius |
| Right ascension | 23h 29m 32.0813s |
| Declination | −04° 31′ 57.89″ |
| Apparent magnitude (V) | 6.25 |
| Characteristics | |
| Spectral type | K3IIIv |
| U−B color index | 1.16 |
| B−V color index | 1.09 |
| R−I color index | 1.41 |
| Variable type | Variable star |
| Astrometry | |
| Radial velocity (Rv) | -25.0 km/s |
| Proper motion (μ) | RA: 179.73 mas/yr Dec.: -231.95 mas/yr |
| Parallax (π) | 20.44 ± 0.86 mas |
| Distance | 160 ± 7 ly (49 ± 2 pc) |
| Absolute magnitude (MV) | 7.34 |
| Details | |
| Mass | 0.8 M☉ |
| Radius | 0.9 R☉ |
| Luminosity | 0.4 L☉ |
| Temperature | 3,500–5,000 K |
| Other designations | |
| Database references | |
| SIMBAD | data |
| Data sources: | |
| Hipparcos Catalogue, CCDM (2002), Bright Star Catalogue (5th rev. ed.) | |
HD 221148 is variable star, variable radial velocity.
References
- HR 8924 Catalog
- Image HD 221148
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