| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Hercules |
| Right ascension | 17h05m 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 | 1.93±0.01[3] M☉ |
| Radius | 1.9[9] R☉ |
| Luminosity | 17.159[3] L☉ |
| Surface gravity (log g) | 4.19±0.03[10] cgs |
| Temperature | 8,299[3] K |
| Rotational velocity (v sin i) | 117[3] km/s |
| Age | 327[11] Myr |
| Other designations | |
60 Her, BD+12° 3142, FK5 635, HD 154494, HIP 83613, HR 6355, SAO 102584[12] | |
| Database references | |
| SIMBAD | data |
60 Herculis is a single[13] star located 134[1] light years away from the Sun in the northern constellationofHercules,[12] and is positioned just seven[14] 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]
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.[15] The star is 327[11] million years old with 1.9[3] times the Sun's mass. It is radiating 17[3] times the luminosity of the Sun from its photosphere at an effective temperature of 8,299 K.[3]
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