Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Boötes |
Right ascension | 14h 22m 14.00070s[2] |
Declination | +29° 22′ 11.7179″[2] |
Apparent magnitude (V) | 6.6[3] |
Characteristics | |
Spectral type | M3III[4] |
U−B color index | +1.46[3] |
B−V color index | +1.60[3] |
Variable type | Irregular[5] |
Astrometry | |
Radial velocity (Rv) | −19.66±0.54[6] km/s |
Proper motion (μ) | RA: −39.980[2] mas/yr Dec.: −26.201[2] mas/yr |
Parallax (π) | 4.5229 ± 0.0973 mas[2] |
Distance | 720 ± 20 ly (221 ± 5 pc) |
Absolute magnitude (MV) | −0.268[7] |
Details | |
Mass | 1.8[2] M☉ |
Radius | 71[2] R☉ |
Luminosity | 943[2] L☉ |
Temperature | 3,227[8] K |
Age | 1.6[2] Gyr |
Other designations | |
Database references | |
SIMBAD | data |
HD 126009 or CI Boötis is a variable star[4] in the northern constellation of Boötes.