Theta Pavonis

θ Pavonis

Location of θ Pavonis (circled)
Observation data Epoch J2000      Equinox J2000
Constellation	Pavo
Right ascension	18h 48m 37.90451s[1]
Declination	−65° 04′ 39.6498″[1]
Apparent magnitude (V)	5.71[2]
Characteristics
Evolutionary stage	main sequence
Spectral type	A8V[3]
B−V color index	+0.268±0.004[2]
Astrometry
Radial velocity (Rv)	−0.7±4.3[4] km/s
Proper motion (μ)	RA: −38.266[1] mas/yr Dec.: −78.246[1] mas/yr
Parallax (π)	15.3252 ± 0.0741 mas[1]
Distance	213 ± 1 ly (65.3 ± 0.3 pc)
Absolute magnitude (MV)	1.56[2]
Details
Mass	1.56[5] M☉
Radius	2.51+0.09 −0.13[1] R☉
Luminosity	17.4±0.1[1] L☉
Surface gravity (log g)	3.94±0.14[5] cgs
Temperature	7,453+199 −136[1] K
Metallicity [Fe/H]	+0.01[6] dex
Rotational velocity (v sin i)	245[7] km/s
Age	425[5] Myr
Other designations
θ Oct, CPD−65°3754, GC 25706, HD 173168, HIP 92294, HR 7036, SAO 254374[8]
Database references
SIMBAD	data

θ Pavonis, Latinized as Theta Pavonis, is a single^[9] star in the southern constellation of Pavo. It is just visible to the naked eye as a dim, white-hued star, having an apparent visual magnitude of 5.71.^[2] This star is located 213 light years from the Sun based on parallax.^[1]

This object is an A-type main-sequence star with a stellar classification of A8V,^[3] which indicates it is generating energy through hydrogen fusion at its core. It displays little to no detectable X-ray emission, suggesting a weak corona^[10] and, at best, a shallow convection zone.^[11] Theta Pavonis is 425^[5] million years old and is spinning rapidly with a projected rotational velocity of 245 km/s.^[7] The star has 1.56^[5] times the mass of the Sun and 2.51^[1] times the Sun's radius. It is radiating 17.4^[1] times the luminosity of the Sun from its photosphere at an effective temperature of 7,453 K.^[1]

It lies six arc-minutes north of the barred lenticular galaxy NGC 6684.^{[citation needed]}