HD 128198

HD 128198

Observation data Epoch J2000      Equinox J2000
Constellation	Boötes
Right ascension	14^h 34^m 38.5001^s[1]
Declination	+36° 37′ 33.83″[1]
Apparent magnitude (V)	6.1657[2]
Characteristics
Spectral type	K4III[3]
U−B color index	+1.59[4]
B−V color index	+1.38[4]
Astrometry
Radial velocity (Rv)	−9.88±0.20[2] km/s
Proper motion (μ)	RA: −24.61[1] mas/yr Dec.: −46.29[1] mas/yr
Parallax (π)	6.43 ± 0.42[1] mas
Distance	510 ± 30 ly (160 ± 10 pc)
Details
Luminosity	161[5] L☉
Temperature	4,300[5] K
Metallicity [Fe/H]	−0.11±0.09 [6] dex
Other designations
BD+37° 2551, HD 128198, HIP 71277, HR 5448, SAO 64227.
Database references
SIMBAD	data

HD 128198 is a giant star in the northern constellation of Boötes.

References

1. 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.
2. 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.
3. Sato, K.; Kuji, S. (November 1990), "MK classification and photometry of stars used for time and latitude observations at Mizusawa and Washington", Astronomy and Astrophysics Supplement Series 85 (3): 1069–1087, Bibcode:1990A&AS...85.1069S.
4. Guetter, H. H.; Hewitt, A. V. (June 1984), "Photoelectric UBV photometry for 317 PZT and VZT stars", Publications of the Astronomical Society of the Pacific 96: 441−443, Bibcode:1984PASP...96..441G, doi:10.1086/131362.
5. 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.
6. Taylor, B. J. (February 1999), "Catalogs of temperatures and [Fe/H] averages for evolved G and K stars", Astronomy and Astrophysics Supplement 134: 523–524, Bibcode:1999A&AS..134..523T, doi:10.1051/aas:1999153.

External links

• HR 5448
• Image HD 128198