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HD 199442 
Summary
HD 199442 is a giant star situated in the Aquarius constellation. It is located about 310 light years from the Solar System.
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Aquarius |
| Right ascension | 20h 57m 10.57663s[1] |
| Declination | +00° 27′ 49.6073″[1] |
| Apparent magnitude (V) | 6.065[2] |
| Characteristics | |
| Spectral type | K2III[2] |
| U−B color index | +1.29[3] |
| B−V color index | +1.22[3] |
| Astrometry | |
| Radial velocity (Rv) | −26.47[2] km/s |
| Proper motion (μ) | RA: +10.70[1] mas/yr Dec.: −62.77[1] mas/yr |
| Parallax (π) | 10.64 ± 0.44 mas[1] |
| Distance | 310 ± 10 ly (94 ± 4 pc) |
| Details | |
| Mass | 1.20[2] M☉ |
| Luminosity | 1.65[2] L☉ |
| Surface gravity (log g) | 2.49[2] cgs |
| Temperature | 4,605[2] K |
| Metallicity [Fe/H] | 0.19[2] dex |
| Rotational velocity (v sin i) | 2.7[4] km/s |
| 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 c d e f g h Luck, R. Earle; Heiter, Ulrike (June 2007), "Giants in the Local Region", The Astronomical Journal, 133 (6): 2464–2486, Bibcode:2007AJ....133.2464L, doi:10.1086/513194
- ^ a b Mermilliod, J.-C. (1986), "Compilation of Eggen's UBV data, transformed to UBV (unpublished)", Catalogue of Eggen's UBV Data. SIMBAD, Bibcode:1986EgUBV........0M
- ^ Massarotti, Alessandro; et al. (January 2008), "Rotational and radial velocities for a sample of 761 HIPPARCOS giants and the role of binarity", The Astronomical Journal, 135 (1): 209–231, Bibcode:2008AJ....135..209M, doi:10.1088/0004-6256/135/1/209, S2CID 121883397
External links edit
- Image HD 199442