34 Boötis
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Boötes |
Right ascension | 14h 43m 25.3632s |
Declination | +26° 31′ 40.261″ |
Apparent magnitude (V) | 4.827 |
Characteristics | |
Spectral type | M3III |
U−B color index | 1.94 |
B−V color index | 1.66 |
R−I color index | 1.22 |
Variable type | Semi-regular |
Astrometry | |
Radial velocity (Rv) | 5.6 km/s |
Proper motion (μ) | RA: -13.29 mas/yr Dec.: -16.68 mas/yr |
Parallax (π) | 3.67 ± 0.94 mas |
Distance | approx. 900 ly (approx. 270 pc) |
Absolute magnitude (MV) | -2.5 |
Details | |
Mass | 4.4 M☉ |
Radius | 110 R☉ |
Luminosity | 830 L☉ |
Temperature | 3300 K |
Other designations | |
Database references | |
SIMBAD | data |
Data sources: | |
Hipparcos Catalogue, CCDM (2002), Bright Star Catalogue (5th rev. ed.) |
34 Boötis or W Boötis is a star in the constellation Boötes.
34 Boötis is a M-type red giant with a mean apparent magnitude of +4.80. It is approximately 890 light years from Earth. It is classified as a semiregular variable star and its brightness varies from magnitude +4.73 to +5.4 with a period of 450 days.
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