Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Boötes |
Right ascension | 14h 34m 39.62069s [2] |
Declination | +49° 22′ 06.0729″ [2] |
Apparent magnitude (V) | 5.74 [3] |
Characteristics | |
Evolutionary stage | AGB [4] |
Spectral type | M1III [4] |
U−B color index | +1.88 [3] |
B−V color index | +1.56 [3] |
Variable type | Lb [5] |
Astrometry | |
Radial velocity (Rv) | −23.93 [6] km/s |
Proper motion (μ) |
RA: −45.517
[2]
mas/
yr Dec.: +49.940 [2] mas/ yr |
Parallax (π) | 4.6569 ± 0.0526 mas [2] |
Distance | 700 ± 8
ly (215 ± 2 pc) |
Absolute magnitude (MV) | −0.32 [7] |
Details | |
Mass | 1.13 [8] M☉ |
Radius | 67 [9] R☉ |
Luminosity | 869 [9] L☉ |
Surface gravity (log g) | 1.00 [8] cgs |
Temperature | 3,734 [8] K |
Metallicity [Fe/H] | +0.10 [8] dex |
Other designations | |
Database references | |
SIMBAD | data |
HD 128333 or CH Boötis is an irregular variable star in the northern constellation of Boötes. It is currently on the asymptotic giant branch of the HR diagram. [4]
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Boötes |
Right ascension | 14h 34m 39.62069s [2] |
Declination | +49° 22′ 06.0729″ [2] |
Apparent magnitude (V) | 5.74 [3] |
Characteristics | |
Evolutionary stage | AGB [4] |
Spectral type | M1III [4] |
U−B color index | +1.88 [3] |
B−V color index | +1.56 [3] |
Variable type | Lb [5] |
Astrometry | |
Radial velocity (Rv) | −23.93 [6] km/s |
Proper motion (μ) |
RA: −45.517
[2]
mas/
yr Dec.: +49.940 [2] mas/ yr |
Parallax (π) | 4.6569 ± 0.0526 mas [2] |
Distance | 700 ± 8
ly (215 ± 2 pc) |
Absolute magnitude (MV) | −0.32 [7] |
Details | |
Mass | 1.13 [8] M☉ |
Radius | 67 [9] R☉ |
Luminosity | 869 [9] L☉ |
Surface gravity (log g) | 1.00 [8] cgs |
Temperature | 3,734 [8] K |
Metallicity [Fe/H] | +0.10 [8] dex |
Other designations | |
Database references | |
SIMBAD | data |
HD 128333 or CH Boötis is an irregular variable star in the northern constellation of Boötes. It is currently on the asymptotic giant branch of the HR diagram. [4]