LTT 9779

LTT 9779 / Uúba
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

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.

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

[1] "Finding the constellation which contains given sky coordinates". djm.cc. 2 August 2008. Retrieved 30 August 2022.

[GaiaDR3-2] ^ ^a ^b ^c ^d ^e ^f Cite error: The named reference GaiaDR3 was invoked but never defined (see the help page).

[Jenkins2020-3] ^ ^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).

[SIMBAD-4] Cite error: The named reference SIMBAD was invoked but never defined (see the help page).

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Observation data Epoch J2000 Equinox J2000
Constellation	Sculptor^[1]
Right ascension	23^h 54^m 40.20731^s^[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 (R_v)	−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]
Distance	264.3 ± 0.4 ly (81.0 ± 0.1 pc)
Absolute magnitude (M_V)	5.30±0.07^[3]

Details^[3]

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^[4]
Database references
SIMBAD	data