31 Boötis
| Observation data Epoch J2000 Equinox J2000 |
|
|---|---|
| Constellation | Boötes |
| Right ascension | 14h 41m 38.7505s |
| Declination | +08° 09′ 42.350″ |
| Apparent magnitude (V) | 4.865 |
| Characteristics | |
| Spectral type | G7+IIIHdel -0.5 |
| U−B color index | 0.76 |
| B−V color index | 1.0 |
| R−I color index | 0.48 |
| Variable type | Variable star |
| Astrometry | |
| Radial velocity (Rv) | -22.1 km/s |
| Proper motion (μ) |
RA: -10.21 mas/yr Dec.: 3.25 mas/yr |
| Parallax (π) | 5.66 ± 0.82 mas |
| Distance | approx. 580 ly (approx. 180 pc) |
| Absolute magnitude (MV) | -1.38 |
| Details | |
| Mass | 1,1 M☉ |
| Radius | 1,1 R☉ |
| Luminosity | 1,2 L☉ |
| Temperature | 5,000–6,000 K |
| Rotation | < 17 km/s 0,008981 Year |
| Other designations | |
| Database references | |
| SIMBAD | data |
31 Boötis is a star in the constellation Boötes.
31 Boötis is a yellow G-type giant with an apparent magnitude of +4.86. It is approximately 576 light years from Earth.
...
Wikipedia