60 Herculis

60 Herculis is a single^[12] star located 134^[1] light years away from the Sun in the northern constellation of Hercules,^[11] and is positioned just seven^[13] degrees away from Rasalgethi (Alpha Herculis). It is visible to the naked eye as a faint, white-hued star with an apparent visual magnitude of 4.871.^[2] This star is moving closer to the Earth with a heliocentric radial velocity of −4 km/s.^[8]

60 Herculis

Observation data Epoch J2000      Equinox J2000
Constellation	Hercules
Right ascension	17h 05m 22.69066s[1]
Declination	+12° 44′ 26.9816″[1]
Apparent magnitude (V)	4.871[2]
Characteristics
Evolutionary stage	main sequence[3]
Spectral type	A3V[4] or A4IV[5]
U−B color index	+0.12[6]
B−V color index	+0.125±0.006[7]
Astrometry
Radial velocity (Rv)	−4.2±2[8] km/s
Proper motion (μ)	RA: +49.805[1] mas/yr Dec.: −12.030[1] mas/yr
Parallax (π)	24.3967±0.2232 mas[1]
Distance	134 ± 1 ly (41.0 ± 0.4 pc)
Absolute magnitude (MV)	1.83[7]
Details
Mass	2.04±0.31[9] M☉
Radius	1.89[9] R☉
Luminosity	15.2[9] L☉
Surface gravity (log g)	4.20[9] cgs
Temperature	8,299[9] K
Rotational velocity (v sin i)	117[3] km/s
Age	327[10] Myr
Other designations
60 Her, BD+12°3142, FK5 635, HD 154494, HIP 83613, HR 6355, SAO 102584[11]
Database references
SIMBAD	data

Abt and Morrell (1995) assigned this star a stellar classification of A3V,^[4] matching an ordinary A-type main-sequence star. However, earlier studies gave it a luminosity class of IV,^[5] which suggested it is a subdwarf star. It has a projected rotational velocity of 117 km/s,^[3] which is creating an equatorial bulge that is 5% larger than the star's polar radius.^[14] The star is 327 million years old^[10] with 2.0 times the Sun's mass.^[9] It is radiating 15 times the luminosity of the Sun from its photosphere at an effective temperature of 8,299 K.^[9]