LTT 9779
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Sculptor |
| Right ascension | 23h 54m 40.20731s |
| Declination | −37° 37′ 40.5244″ |
| Apparent magnitude (V) | 9.76±0.03 |
| Characteristics | |
| Evolutionary stage | Main sequence |
| Spectral type | G7V |
| Apparent magnitude (B) | 10.55±0.04 |
| Apparent magnitude (V) | 9.76±0.03 |
| Apparent magnitude (G) | 9.606±0.003 |
| Apparent magnitude (J) | 8.45±0.02 |
| Apparent magnitude (H) | 8.15±0.02 |
| Apparent magnitude (K) | 8.02±0.03 |
| Astrometry | |
| Radial velocity (Rv) | −10.72±0.22 km/s |
| Proper motion (μ) | RA: 247.634 mas/yr Dec.: −69.752 mas/yr |
| Parallax (π) | 12.3381±0.0166 mas |
| Distance | 264.3 ± 0.4 ly (81.0 ± 0.1 pc) |
| Absolute magnitude (MV) | 5.30±0.07 |
| Details | |
| Mass | 1.00+0.02 −0.03 M☉ |
| Radius | 0.949±0.006 R☉ |
| Luminosity (bolometric) | 0.71±0.01 L☉ |
| Surface gravity (log g) | 4.51±0.01 cgs |
| Temperature | 5443+14 −13 K |
| Metallicity [Fe/H] | 0.27±0.03 dex |
| Rotation | ≤45 d |
| Rotational velocity (v sin i) | 1.06±0.37 km/s |
| Age | 1.9+1.7 −1.2 Gyr |
| Other designations | |
| Uúba, CD−38 15670, CPD−38 8578, HIP 117883, SAO 214854, PPM 304331, LTT 9779, NLTT 58368, TOI-193, TIC 183985250, TYC 8015-1162-1, 2MASS J23544020-3737408, WISEA J235440.43-373741.2 | |
| Database references | |
| SIMBAD | data |
| Exoplanet Archive | data |
LTT 9779 (or Uúba) is a G-type main-sequence star located 264 light-years (81 parsecs) away from the Solar System in the constellation of Sculptor. The star is about 95% the radius and about the same mass as the Sun, but younger than the Sun at 1.7 billion years old, hence its lower luminosity (about 0.7 L☉). It has a temperature of 5,443 K (5,170 °C; 9,338 °F) and a rotation period of 45 days. LTT 9779 is orbited by one known exoplanet.