HD 110113
HD 110113, also known as TOI-755, is a star with a pair of orbiting exoplanets in the Centaurus constellation. With an apparent visual magnitude of 10.063, it is much too faint to be viewed with the naked eye. The system is located at a distance from the Solar System of about 346.5 light-years (106.2 parsecs). It is drifting further away with a heliocentric radial velocity of 17 km/s. A planetary system was discovered orbiting this star in 2021.
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Centaurus |
| Right ascension | 12h 40m 08.781s |
| Declination | −44° 18′ 43.27″ |
| Apparent magnitude (V) | 10.063 |
| Characteristics | |
| Evolutionary stage | main-sequence |
| Spectral type | G8V |
| B−V color index | 0.697±0.041 |
| Astrometry | |
| Radial velocity (Rv) | 17.46 km/s |
| Proper motion (μ) | RA: −3.723 mas/yr Dec.: −13.766 mas/yr |
| Parallax (π) | 9.4499 ± 0.0158 mas |
| Distance | 345.1 ± 0.6 ly (105.8 ± 0.2 pc) |
| Details | |
| Mass | 0.997±0.08 M☉ |
| Radius | 0.968 R☉ |
| Luminosity | 0.91 L☉ |
| Surface gravity (log g) | 4.46±0.05 cgs |
| Temperature | 5,732±16 K |
| Metallicity [Fe/H] | −0.004 dex |
| Rotation | 20.8±1.2 d |
| Rotational velocity (v sin i) | 1.74 km/s |
| Age | 4.0 Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
The spectrum of HD 110113 presents as a G-type main-sequence star, or yellow dwarf, with a stellar classification of G8V. It has an estimated age of four billion years and is spinning slowly with a rotation period of 20.8 days. The star is considered a solar analog, having nearly the same mass and size as the Sun. It radiating 91% of the Sun's luminosity from its photosphere at an effective temperature of 5,732 K. The star displays rotationally-modulated variability that is indicative of star spots.