| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Boötes |
| Right ascension | 14h 41m 43.52071s[1] |
| Declination | +11° 39′ 38.3820″[1] |
| Apparent magnitude (V) | 5.55[2] |
| Characteristics | |
| Evolutionary stage | red clump[3] |
| Spectral type | G8 III[4] |
| B−Vcolor index | 0.941±0.002[2] |
| Astrometry | |
| Radial velocity (Rv) | −23.3±0.3[2] km/s |
| Proper motion (μ) | RA: −159.787[1]mas/yr Dec.: −112.732[1]mas/yr |
| Parallax (π) | 9.0120±0.2578 mas[1] |
| Distance | 360 ± 10 ly (111 ± 3 pc) |
| Absolute magnitude (MV) | 0.09[2] |
| Details | |
| Mass | 2.15[5] M☉ |
| Radius | 12.06+0.09 −0.24[1] R☉ |
| Luminosity | 79.14±2.57[1] L☉ |
| Surface gravity (log g) | 2.6±0.3[3] cgs |
| Temperature | 4,957.5+50.0 −17.5[1] K |
| Metallicity[Fe/H] | −23.3±0.3[2] dex |
| Rotational velocity (v sin i) | 2.6[6] km/s |
| Age | 1.46[5] Gyr |
| Other designations | |
| 32 Boo,BD+12°2729,FK5 1382,HD 129336,HIP 71837,HR 5481,SAO 120601,LTT 14344[7] | |
| Database references | |
| SIMBAD | data |
32 Boötis is a single[8]star in the northernconstellation ofBoötes,[7] located 360 light years away from the Sun.[1] It is visible to the naked eye as a faint, yellow-hued star with anapparent visual magnitude of 5.55.[2] This object is moving closer to the Earth with a heliocentricradial velocity of −23 km/s.[2] It has a relatively highproper motion, traversing thecelestial sphere at the rate of 0.195 arc seconds per annum.[9]
This is an aginggiant star with astellar classification of G8 III.[4] It is most likely on thehorizontal branch and is a candidatered clump giant.[3] The star is an estimated 1.46[5] billion years old with 2.15[5] times themass of the Sun. With the hydrogen at its core exhausted, it has expanded to 12[1] times theSun's radius. 32 Boötis is radiating 79[1] times theluminosity of the Sun from its swollenphotosphere at aneffective temperature of 4958 K.[1]
