Theta Sculptoris

θ Sculptoris, Latinized as Theta Sculptoris, is a star in the southern constellation of Sculptor. This object is visible to the naked eye as a dim, yellow-white hued star with an apparent visual magnitude of +5.24.^[2] It is located 71 light years from the Sun based on parallax.^[1] The object is drifting closer with a radial velocity of −21 km/s, and may come to within 49 light-years in half a million years.^[4]

Theta Sculptoris

Location of θ Sculptoris (circled)
Observation data Epoch J2000.0      Equinox J2000.0
Constellation	Sculptor
Right ascension	00h 11m 44.02079s[1]
Declination	−35° 07′ 59.2320″[1]
Apparent magnitude (V)	+5.236±0.005[2]
Characteristics
Evolutionary stage	main sequence
Spectral type	F5V[3]
B−V color index	0.459±0.002[4]
Astrometry
Radial velocity (Rv)	−21.1±0.3[4] km/s
Proper motion (μ)	RA: +171.529[1] mas/yr Dec.: +126.670[1] mas/yr
Parallax (π)	46.1936±0.1565 mas[1]
Distance	70.6 ± 0.2 ly (21.65 ± 0.07 pc)
Absolute magnitude (MV)	3.52[2]
Details[2]
Mass	1.25 M☉
Radius	1.40±0.05 R☉
Luminosity	3.09[4] L☉
Surface gravity (log g)	4.25±0.10 cgs
Temperature	6,395±80 K
Metallicity [Fe/H]	−0.07±0.07 dex
Rotational velocity (v sin i)	1.0±1.0 km/s
Age	1.6+2.4 −0.5[4] Gyr
Other designations
θ Scl, CD−35°4, FK5 6, GC 202, GJ 3013, HD 739, HIP 950, HR 35, SAO 192388, LTT 79, GSC 06995-01262[5]
Database references
SIMBAD	data

This is an astrometric binary system.^[6] The visible component is an ordinary F-type main-sequence star with a stellar classification of F5V.^[3] It is around 1.6^[4] billion years old with 1.25 times the mass of the Sun and 1.40 times the Sun's radius. The star is radiating three^[4] times the luminosity of the Sun from its photosphere at an effective temperature of 6,395 K.^[2]