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 | |
Spectral type | G8 III [3] |
B−V color 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 [4] 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 [5] 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 [4] Gyr |
Other designations | |
Database references | |
SIMBAD | data |
32 Boötis is a single [8] star in the northern constellation of Boötes, [7] located 360 light years away from the Sun. [1] It is visible to the naked eye as a faint, yellow-hued star with an apparent visual magnitude of 5.55. [2] This object is moving closer to the Earth with a heliocentric radial velocity of −23 km/s. [2] It has a relatively high proper motion, traversing the celestial sphere at the rate of 0.195 arc seconds per annum. [9]
This is an aging giant star with a stellar classification of G8 III. [3] It is most likely on the horizontal branch and is a candidate red clump giant. [5] The star is an estimated 1.46 [4] billion years old with 2.15 [4] times the mass of the Sun. With the hydrogen at its core exhausted, it has expanded to 12 [1] times the Sun's radius. 32 Boötis is radiating 79 [1] times the luminosity of the Sun from its swollen photosphere at an effective temperature of 4958 K. [1]