HD 152843
HD 152843 (also designated as TOI-2319) is a single star with a pair of close-orbiting exoplanets, located in the northern constellation of Hercules. It is positioned at a distance of 356 light years from the Sun based on parallax measurements, and at that range is too faint to be viewed with the naked eye, having an apparent visual magnitude of 8.85. The system is receding further away with a radial velocity of 10 km/s.
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Hercules |
| Right ascension | 16h 55m 08.35611s |
| Declination | +20° 29′ 28.7945″ |
| Apparent magnitude (V) | 8.85 |
| Characteristics | |
| Evolutionary stage | Main sequence |
| Spectral type | G0 |
| B−V color index | 0.53 |
| Astrometry | |
| Radial velocity (Rv) | 10.06±0.15 km/s |
| Proper motion (μ) | RA: 14.838 mas/yr Dec.: 44.635 mas/yr |
| Parallax (π) | 9.1607 ± 0.0152 mas |
| Distance | 356.0 ± 0.6 ly (109.2 ± 0.2 pc) |
| Details | |
| Mass | 1.15±0.04 M☉ |
| Radius | 1.43±0.02 R☉ |
| Surface gravity (log g) | 4.19±0.03 cgs |
| Temperature | 6,310±100 K |
| Metallicity [Fe/H] | −0.16±0.05 dex |
| Rotation | 5.0±0.9 days |
| Rotational velocity (v sin i) | 8.38±0.50 km/s |
| Age | 3.97±0.75 Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
This is a G-type main-sequence star with a stellar classification of G0. It has 1.15 times the mass and 1.43 times the girth of the Sun. Around four billion years of age, HD 152843 is a quiet star, showing very little magnetic activity in its chromosphere. The abundance of iron, a measure of the star's metallicity, is somewhat lower than in the Sun. It is spinning with a projected rotational velocity of 8.4 km/s.