LTT 9779

LTT 9779 / Uúba
Observation data
Epoch J2000      Equinox J2000
Constellation Sculptor[1]
Right ascension 23h 54m 40.20731s[2]
Declination −37° 37′ 40.5244″[2]
Apparent magnitude (V) 9.76±0.03[3]
Characteristics
Evolutionary stage Main sequence
Spectral type G7V[3]
Apparent magnitude (B) 10.55±0.04[3]
Apparent magnitude (V) 9.76±0.03[3]
Apparent magnitude (G) 9.606±0.003[2]
Apparent magnitude (J) 8.45±0.02[3]
Apparent magnitude (H) 8.15±0.02[3]
Apparent magnitude (K) 8.02±0.03[3]
Astrometry
Radial velocity (Rv)−10.72±0.22[2] km/s
Proper motion (μ) RA: 247.634 mas/yr[2]
Dec.: −69.752 mas/yr[2]
Parallax (π)12.3381 ± 0.0166 mas[2]
Distance264.3 ± 0.4 ly
(81.0 ± 0.1 pc)
Absolute magnitude (MV)5.30±0.07[3]
Details[3]
Mass1.00+0.02
−0.03
 M
Radius0.949±0.006 R
Luminosity (bolometric)0.71±0.01 L
Surface gravity (log g)4.51±0.01 cgs
Temperature5443+14
−13
 K
Metallicity [Fe/H]0.27±0.03 dex
Rotation45 d
Rotational velocity (v sin i)1.06±0.37 km/s
Age1.9+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[4]
Database references
SIMBADdata

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.[3] LTT 9779 is orbited by one known exoplanet.

  1. ^ "Finding the constellation which contains given sky coordinates". djm.cc. 2 August 2008. Retrieved 30 August 2022.
  2. ^ a b c d e f Cite error: The named reference GaiaDR3 was invoked but never defined (see the help page).
  3. ^ a b c d e f g h i j Cite error: The named reference Jenkins2020 was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).