29 Herculis

29 Herculis is a single^[11] star located around 351^[1] light years away from the Sun in the northern constellation of Hercules, a few degrees away from Omega Herculis. It has the Bayer designation h Herculis, while 29 Herculis is the Flamsteed designation.^[10] This star is visible to the naked eye as a faint, orange-hued point of light with an apparent visual magnitude of 4.84.^[2] It is moving further from the Earth with a heliocentric radial velocity of +3 km/s.^[2] The star has a relatively high proper motion, traversing the celestial sphere at the rate of 0.195 arc seconds per annum.^[12]

29 Herculis

Observation data Epoch J2000      Equinox J2000
Constellation	Hercules
Right ascension	16h 32m 36.29190s[1]
Declination	+11° 29′ 16.9479″[1]
Apparent magnitude (V)	4.84[2]
Characteristics
Evolutionary stage	giant
Spectral type	K4.5 III[3]
B−V color index	1.495±0.002[2]
Variable type	suspected[4]
Astrometry
Radial velocity (Rv)	+2.92±0.20[2] km/s
Proper motion (μ)	RA: -178.84[1] mas/yr Dec.: −79.27[1] mas/yr
Parallax (π)	9.29±0.26 mas[1]
Distance	351 ± 10 ly (108 ± 3 pc)
Absolute magnitude (MV)	−0.17[5]
Details
Mass	1.19[6] M☉
Radius	42.05+0.45 −1.81[7] R☉
Luminosity	384±19[7] L☉
Surface gravity (log g)	1.79±0.28[8] cgs
Temperature	3,958±25[6] K
Metallicity [Fe/H]	−0.18±0.09[8] dex
Rotational velocity (v sin i)	5.4[9] km/s
Age	6.53[6] Gyr
Other designations
h Her, 29 Her, NSV 7812, BD+11°3008, FK5 3310, GC 22250, HD 149161, HIP 81008, HR 6159, SAO 102234, LTT 14915[10]
Database references
SIMBAD	data

This is an aging giant star with a stellar classification of K4.5 III.^[3] It displays an enhanced abundance of elements generated through the alpha process, and, in particular, has a strong enhancement of silicon.^[13] 29 Herculis is a suspected variable star of unknown type, and has been measured ranging in visual magnitude from 4.82 down to 4.85.^[4] It is an estimated 6.53^[6] billion years old with 1.19^[6] times the mass of the Sun. Having exhausted the supply of hydrogen at its core, it has expanded to 42^[7] times the Sun's radius. The star is radiating 384^[7] times the luminosity of the Sun from its swollen photosphere at an effective temperature of 3,958 K.^[6]