HD 128333
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Boötes |
| Right ascension | 14h 34m 39.6205s |
| Declination | +49° 22′ 06.075″ |
| Apparent magnitude (V) | 5.754 |
| Characteristics | |
| Spectral type | M1IIIab |
| U−B color index | 1.88 |
| B−V color index | 1.56 |
| R−I color index | 0.72 |
| Variable type | Variable star |
| Astrometry | |
| Radial velocity (Rv) | -20.1 km/s |
| Proper motion (μ) | RA: -45.83 mas/yr Dec.: 50.41 mas/yr |
| Parallax (π) | 4.17 ± 0.6 mas |
| Distance | approx. 800 ly (approx. 240 pc) |
| Absolute magnitude (MV) | 7.348 |
| Details | |
| Mass | 0.4 M☉ |
| Radius | 0.5 R☉ |
| Luminosity | 0.04 L☉ |
| Temperature | 2,000–3,500 K |
| Other designations | |
| Database references | |
| SIMBAD | data |
| Data sources: | |
| Hipparcos Catalogue, CCDM (2002), Bright Star Catalogue (5th rev. ed.) | |
HD 128333 or CH Boötis is a variable star in the constellation Boötes.
References
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