HD 215456
HD 215456 is a star in the southern constellation Grus. It is a dim, yellow-hued star that lies just below the normal limit for visibility to the naked eye with an apparent visual magnitude of 6.63. The distance to this star is 129 light years based on parallax, and it has an absolute magnitude of 3.73. It is drifting closer with a radial velocity of −18.9 km/s.
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Grus |
| Right ascension | 22h 46m 08.03428s |
| Declination | −48° 58′ 43.7624″ |
| Apparent magnitude (V) | 6.63 |
| Characteristics | |
| Evolutionary stage | Main sequence |
| Spectral type | G0.5V |
| B−V color index | 0.636±0.006 |
| Astrometry | |
| Radial velocity (Rv) | −18.923±0.0003 km/s |
| Proper motion (μ) | RA: +207.608 mas/yr Dec.: −47.958 mas/yr |
| Parallax (π) | 25.2196 ± 0.0484 mas |
| Distance | 129.3 ± 0.2 ly (39.65 ± 0.08 pc) |
| Absolute magnitude (MV) | 3.73 |
| Details | |
| Mass | 1.207±0.060 M☉ |
| Radius | 1.71±0.03 R☉ |
| Luminosity | 3.020±0.008 L☉ |
| Surface gravity (log g) | 4.12 cgs |
| Temperature | 5,818+45 −46 K |
| Metallicity [Fe/H] | −0.07±0.03 dex |
| Rotational velocity (v sin i) | 2.3±0.2 km/s |
| Age | 7.5+0.7 −0.8 Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
This object is a solar-type main-sequence star with a stellar classification of G0.5V. It is about 7.5 billion years old with a projected rotational velocity of 2.3 km/s. The star has 1.2 times the mass of the Sun and 1.7 times the Sun's radius. The metallicity, or abundance of elements with higher atomic numbers than helium, is slightly below solar. The star is radiating triple the luminosity of the Sun from its photosphere at an effective temperature of 5,818 K.