HD 128333
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Boötes |
| Right ascension | 14h 34m 39.62086s[1] |
| Declination | +49° 22′ 06.0731″[1] |
| Apparent magnitude (V) | 5.74[2] |
| Characteristics | |
| Spectral type | M1III[3] |
| U−B color index | +1.88[2] |
| B−V color index | +1.56[2] |
| R−I color index | 0.72 |
| Variable type | Irregular[4] |
| Astrometry | |
| Radial velocity (Rv) | -23.93[5] km/s |
| Proper motion (μ) | RA: -45.50[1] mas/yr Dec.: 50.15[1] mas/yr |
| Parallax (π) | 3.81 ± 0.26[1] mas |
| Distance | 860 ± 60 ly (260 ± 20 pc) |
| Details | |
| Luminosity | 917[6] L☉ |
| Temperature | 3,945[6] K |
| 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.[3]
References
- 1 2 3 4 5 van Leeuwen, F. (2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics 474 (2): 653–664, arXiv:0708.1752, Bibcode:2007A&A...474..653V, doi:10.1051/0004-6361:20078357.
- 1 2 3 Mermilliod, J.-C. (1986), "Compilation of Eggen's UBV data, transformed to UBV (unpublished)", Catalogue of Eggen's UBV data. SIMBAD, Bibcode:1986EgUBV........0M.
- 1 2 Eggen, O. J. (1992). "Asymptotic giant branch stars near the sun". The Astronomical Journal 104: 275. Bibcode:1992AJ....104..275E. doi:10.1086/116239.
- ↑ Lebzelter, T.; Hinkle, K. H. (October 2002), "Velocity variability of semiregular and irregular variables", Astronomy and Astrophysics 393: 563−571, Bibcode:2002A&A...393..563L, doi:10.1051/0004-6361:20021085.
- ↑ Famaey, B.; et al. (2005), "Local kinematics of K and M giants from CORAVEL/Hipparcos/Tycho-2 data. Revisiting the concept of superclusters", Astronomy and Astrophysics 430: 165–186, arXiv:astro-ph/0409579, Bibcode:2005A&A...430..165F, doi:10.1051/0004-6361:20041272.
- 1 2 McDonald, I.; et al. (2012), "Fundamental Parameters and Infrared Excesses of Hipparcos Stars", Monthly Notices of the Royal Astronomical Society 427 (1): 343–57, arXiv:1208.2037, Bibcode:2012MNRAS.427..343M, doi:10.1111/j.1365-2966.2012.21873.x.
External links
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