HIP 11915
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Cetus |
| Right ascension | 02h 33m 49.026s |
| Declination | −19° 36′ 42.500″ |
| Apparent magnitude (V) | 8.58 |
| Characteristics | |
| Evolutionary stage | Main sequence |
| Spectral type | G5V |
| Astrometry | |
| Radial velocity (Rv) | 14.45±0.14 km/s |
| Proper motion (μ) | RA: +223.559 mas/yr Dec.: +35.513 mas/yr |
| Parallax (π) | 18.6292±0.0224 mas |
| Distance | 175.1 ± 0.2 ly (53.68 ± 0.06 pc) |
| Absolute magnitude (MV) | 4.83 |
| Details | |
| Mass | 0.991±0.003 M☉ |
| Radius | 0.974±0.001 R☉ |
| Luminosity | 1.0+0.13 −0.12 L☉ |
| Surface gravity (log g) | 4.47±0.008 cgs |
| Temperature | 5773±2 K |
| Metallicity [Fe/H] | −0.057±0.003 dex |
| Rotation | 27.4+1.2 −7.9 days |
| Rotational velocity (v sin i) | 0.99±0.15 km/s |
| Age | 3.87±0.39 Gyr |
| Other designations | |
| BD−20°481, HD 16008, HIP 11915, SAO 148468 | |
| Database references | |
| SIMBAD | data |
HIP 11915 is a G-type main-sequence star located about 175 light-years from Earth in the constellation Cetus. It is considered a solar twin, having very similar characteristics to those of the Sun, including mass, radius, temperature, metallicity and age. It has a planetary companion, HIP 11915 b, which has a mass and orbital distance similar to that of Jupiter.
With an apparent magnitude of 8.6, it cannot be seen with the unaided eye, but can be observed with binoculars.