HD 117618
HD 117618, named Dofida by the IAU, is a single, yellow-hued star in the southern constellation of Centaurus. With an apparent visual magnitude of 7.17, it is too faint to be visible to the naked eyes of a typical observer. The distance to this star, as determined from its annual parallax shift of 26.34±0.60 mas as seen from Earth's orbit, is about 124 light years. It is moving further away with a heliocentric radial velocity of around +1.6 km/s.
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Centaurus |
| Right ascension | 13h 32m 25.55543s |
| Declination | –47° 16′ 16.9091″ |
| Apparent magnitude (V) | 7.17 |
| Characteristics | |
| Spectral type | G0 V |
| B−V color index | 0.603±0.010 |
| Astrometry | |
| Radial velocity (Rv) | +1.60±0.76 km/s |
| Proper motion (μ) | RA: +24.87 mas/yr Dec.: −125.01 mas/yr |
| Parallax (π) | 26.34 ± 0.60 mas |
| Distance | 124 ± 3 ly (38.0 ± 0.9 pc) |
| Absolute magnitude (MV) | 4.27 |
| Details | |
| Mass | 1.10±0.02 M☉ |
| Radius | 1.17±0.04 R☉ |
| Luminosity | 1.6±0.1 L☉ |
| Surface gravity (log g) | 4.34±0.03 cgs |
| Temperature | 6,019±50 K |
| Metallicity [Fe/H] | +0.03±0.01 dex |
| Rotational velocity (v sin i) | 3.67 km/s |
| Age | 4.0±1.3 Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
This star is similar to the Sun, being a G-type main-sequence star with a stellar classification of G0 V. It is about 10% more massive and 17% larger than the Sun, with an estimated age of roughly four billion years and a projected rotational velocity of 3.67 km/s. The star is radiating 1.6 times the Sun's luminosity from its photosphere at an effective temperature of 6,019 K.