HD 128198 is a giant star in the northern constellation of Boötes.
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Boötes |
| Right ascension | 14h 34m 38.5001s[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 mas[1] |
| 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 | |
| Database references | |
| SIMBAD | data |
References
edit- ^ 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 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.
- ^ 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.
- ^ a b 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.
- ^ 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.
- ^ Taylor, B.J. (February 1999), "Catalogs of temperatures and [Fe/H] averages for evolved G and K stars", Astronomy and Astrophysics Supplement, 134 (3): 523–524, Bibcode:1999A&AS..134..523T, doi:10.1051/aas:1999153.
External links
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