HD 128333
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Boötes |
Right ascension | 14h 34m 39.62086s[2] |
Declination | +49° 22′ 06.0731″[2] |
Apparent magnitude (V) | 5.74[3] |
Characteristics | |
Spectral type | M1III[4] |
U−B color index | +1.88[3] |
B−V color index | +1.56[3] |
R−I color index | 0.72 |
Variable type | Lb[5] |
Astrometry | |
Radial velocity (Rv) | -23.93[6] km/s |
Proper motion (μ) | RA: -45.50[2] mas/yr Dec.: 50.15[2] mas/yr |
Parallax (π) | 3.81 ± 0.26[2] mas |
Distance | 860 ± 60 ly (260 ± 20 pc) |
Details | |
Luminosity | 917[7] L☉ |
Temperature | 3,945[7] 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.[4]
References[]
- ^ "Hipparcos Tools Interactive Data Access". Hipparcos. ESA. Retrieved 8 December 2021.
- ^ a b c d e 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, S2CID 18759600.
- ^ a b c Mermilliod, J.-C. (1986), "Compilation of Eggen's UBV data, transformed to UBV (unpublished)", Catalogue of Eggen's UBV Data. SIMBAD, Bibcode:1986EgUBV........0M.
- ^ a b 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 (2): 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, S2CID 17804304.
- ^ a b 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, S2CID 118665352.
External links[]
Categories:
- Boötes
- Henry Draper Catalogue objects
- Hipparcos objects
- M-type giants
- HR objects
- Objects with variable star designations
- Slow irregular variables
- Durchmusterung objects
- Giant-star stubs
- Variable star stubs