HD 117618
Star in the Centaurus constellation / From Wikipedia, the free encyclopedia
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HD 117618, named Dofida by the IAU,[8] is a single,[9] yellow-hued star in the southern constellation of Centaurus. With an apparent visual magnitude of 7.17,[2] 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,[1] is about 124 light years. It is moving further away with a heliocentric radial velocity of around +1.6 km/s.[2]
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Centaurus |
Right ascension | 13h 32m 25.55543s[1] |
Declination | –47° 16′ 16.9091″[1] |
Apparent magnitude (V) | 7.17[2] |
Characteristics | |
Spectral type | G0 V[3] |
B−V color index | 0.603±0.010[2] |
Astrometry | |
Radial velocity (Rv) | +1.60±0.76[2] km/s |
Proper motion (μ) | RA: +24.87[1] mas/yr Dec.: −125.01[1] mas/yr |
Parallax (π) | 26.34 ± 0.60 mas[1] |
Distance | 124 ± 3 ly (38.0 ± 0.9 pc) |
Absolute magnitude (MV) | 4.27[2] |
Details[4] | |
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[5] dex |
Rotational velocity (v sin i) | 3.67[6] 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.[3] It is about 10% more massive and 17% larger than the Sun, with an estimated age of roughly four billion years[4] and a projected rotational velocity of 3.67 km/s.[6] The star is radiating 1.6 times the Sun's luminosity from its photosphere at an effective temperature of 6,019 K.[4]