The position of υ Boötis |
|
Observation data Epoch J2000 Equinox J2000 |
|
---|---|
Constellation | Boötes |
Right ascension | 13h 49m 28.64s [1] |
Declination | +15° 47′ 52.5″ [1] |
Apparent magnitude (V) | 4.053 |
Characteristics | |
Spectral type | K5.5III |
U−B color index | 1.87 |
B−V color index | 1.52 |
R−I color index | 0.87 |
Variable type | Variable star |
Astrometry | |
Radial velocity (Rv) | -5.6 km/s |
Proper motion (μ) | RA: -94.22 ± 0.19 [1] mas/yr Dec.: 41.07 ± 0.14 [1] mas/yr |
Parallax (π) | 12.38 ± 0.23[1] mas |
Distance | 263 ± 5 ly (81 ± 2 pc) |
Absolute magnitude (MV) | -0.33 |
Details | |
Mass | 1.11 ± 0.33 [2] M☉ |
Radius | 0.9 R☉ |
Luminosity | 0.4 L☉ |
Temperature | 3,500–5,000 K |
Rotation | < 17 km/s 0,007348 Year |
Other designations | |
Database references | |
SIMBAD | data |
Data sources: | |
Hipparcos Catalogue, CCDM (2002), Bright Star Catalogue (5th rev. ed.) |
Upsilon Boötis (υ Boo, υ Boötis) is a star in the constellation Boötes.
Upsilon Boötis is an orange K-type giant with an apparent magnitude of +4.05. It is approximately 263 light years from Earth.[1]
|