HD 128333

HD 128333
	; A light curve for CH Boötes, plotted from Hipparcos data
Observation data; Epoch J2000 Equinox J2000
Constellation	Boötes
Right ascension	14h 34m 39.62069s
Declination	+49° 22′ 06.0729″
Apparent magnitude (V)	5.74
Characteristics
Evolutionary stage	AGB
Spectral type	M1III
U−B color index	+1.88
B−V color index	+1.56
Variable type	Lb
Astrometry
Radial velocity (Rv)	−23.93 km/s
Proper motion (μ)	RA: −45.517 mas/yr ; Dec.: +49.940 mas/yr
Parallax (π)	4.6569 ± 0.0526 mas
Distance	700 ± 8 ly ; (215 ± 2 pc)
Absolute magnitude (MV)	−0.32
Details
Mass	1.13 M☉
Radius	67 R☉
Luminosity	869 L☉
Surface gravity (log g)	1.00 cgs
Temperature	3,734 K
Metallicity [Fe/H]	+0.10 dex
Other designations
	CH Boötis, BD+50 2095, FK5 3155, HD 128333, HIP 71280, HR 5452, SAO 45121.
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 Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.
^ ^a ^b ^c Mermilliod, J.-C. (1986), "Compilation of Eggen's UBV data, transformed to UBV (unpublished)", Catalogue of Eggen's UBV Data.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 ^c 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.
^ Gontcharov, G. A. (2017). "VizieR Online Data Catalog: Tycho-2 red giant branch and carbon stars (Gontcharov, 2011)". VizieR On-Line Data Catalog. Bibcode:2017yCat..90370769G.
^ ^a ^b ^c ^d Anders, F.; Khalatyan, A.; Chiappini, C.; Queiroz, A. B.; Santiago, B. X.; Jordi, C.; Girardi, L.; Brown, A. G. A.; Matijevic, G.; Monari, G.; Cantat-Gaudin, T. (2019-08-01). "Photo-astrometric distances, extinctions, and astrophysical parameters for Gaia DR2 stars brighter than G = 18". Astronomy and Astrophysics. 628: A94. arXiv:1904.11302. Bibcode:2019A&A...628A..94A. doi:10.1051/0004-6361/201935765. ISSN 0004-6361.
^ ^a ^b McDonald, I.; Zijlstra, A. A.; Watson, R. A. (15 June 2017). "Fundamental parameters and infrared excesses of Tycho–Gaia stars". Monthly Notices of the Royal Astronomical Society. 471 (1): 770–791. arXiv:1706.02208. Bibcode:2017MNRAS.471..770M. doi:10.1093/mnras/stx1433. eISSN 1365-2966. ISSN 0035-8711.