TOI-5788
Location of TOI-5788 in the night sky. The star is marked within the red rectangle. | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Lyra |
| Right ascension | 19h 09m 41.95531s |
| Declination | +31° 45′ 39.6489″ |
| Apparent magnitude (V) | 10.15 |
| Characteristics | |
| Evolutionary stage | Main sequence |
| Spectral type | G4 V |
| Astrometry | |
| Radial velocity (Rv) | −59.36 km/s |
| Proper motion (μ) | RA: +17.353 mas/yr Dec.: +119.563 mas/yr |
| Parallax (π) | 10.2688±0.0123 mas |
| Distance | 317.6 ± 0.4 ly (97.4 ± 0.1 pc) |
| Details | |
| Mass | 0.87±0.04 M☉ |
| Radius | 0.87±0.006 R☉ |
| Luminosity | 0.712±0.018 L☉ |
| Surface gravity (log g) | 4.42±0.01 cgs |
| Temperature | 5,615±25 K |
| Metallicity [Fe/H] | −0.32±0.04 dex |
| Rotational velocity (v sin i) | ≤ 2 km/s |
| Age | 5.72+3.37 −2.65 Gyr |
| Other designations | |
| BD+31 3477, TOI-5788, TIC 42883782, TYC 2640-273-1, 2MASS J19094195+3145395, Gaia DR3 2042653052618584960 | |
| Database references | |
| SIMBAD | data |
TOI-5788 (also known as TIC 42883782) is a metal-poor yellow dwarf of spectral class G4, located approximately 318 light-years away from us in the zodiacal constellation Lyra. Its apparent visual magnitude is 10.15, making it invisible to the naked eye but observable with a standard telescope. Two exoplanets orbit it, designated as TOI-5788 b and TOI-5788 c, where the former is classified as a rocky planet and the latter is a mini-Neptune.
The object's parameters are close to those of the Sun, but it possesses a significantly lower metallicity of -0.32, a mass and radius of 0.87, with an effective surface temperature reaching 5615 K. The star's age is estimated to be approximately 5.7 billion years, making it somewhat older than the Sun.