| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Hercules |
| Right ascension | 17h 03m 07.87177s[1] |
| Declination | +14° 05′ 31.0117″[1] |
| Apparent magnitude (V) | 4.97[2] |
| Characteristics | |
| Spectral type | M3−III[3] |
| B−V color index | 1.600±0.007[2] |
| Astrometry | |
| Radial velocity (Rv) | +43.15±0.15[2] km/s |
| Proper motion (μ) | RA: +24.628[1] mas/yr Dec.: −62.492[1] mas/yr |
| Parallax (π) | 7.9057 ± 0.2050 mas[1] |
| Distance | 410 ± 10 ly (126 ± 3 pc) |
| Absolute magnitude (MV) | −0.44[2] |
| Details | |
| Mass | 1.60+1.38 −0.75[4] M☉ |
| Radius | 59.92+4.78 −13.93[1] R☉ |
| Luminosity | 614.4±18.2[1] L☉ |
| Temperature | 3,712+525 −140[1] K |
| Metallicity [Fe/H] | 0.00[4] dex |
| Other designations | |
| Database references | |
| SIMBAD | data |
32 Ophiuchi[6] is a single[7] star located 410[1] light years away from the Sun in the constellation Hercules. It is visible to the naked eye as a dim, red-hued star with an apparent visual magnitude of 4.97.[2] This is an aging red giant star on the asymptotic giant branch[8] with a stellar classification of M3−III.[3] Having exhausted the supply of hydrogen at its core it has expanded to 60[1] times the girth of the Sun. The star is radiating 614[1] times the luminosity of the Sun from its swollen photosphere at an effective temperature of around 3,712 K.[1] It is moving further away from the Sun with a heliocentric radial velocity of +43 km/s.[2]
GaiaDR2 was invoked but never defined (see the help page).Anderson2012 was invoked but never defined (see the help page).Keenan1989 was invoked but never defined (see the help page).Charbonnel_et_al_2020 was invoked but never defined (see the help page).SIMBAD was invoked but never defined (see the help page).Eggleton2008 was invoked but never defined (see the help page).Eggen1992 was invoked but never defined (see the help page).