HD 128093
(Redirected from HR 5445)
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Boötes |
| Right ascension | 14h 34m 11.70723s[1] |
| Declination | +32° 32′ 04.1218″[1] |
| Apparent magnitude (V) | 6.33[2] |
| Characteristics | |
| Spectral type | F5V[3] |
| U−B color index | −0.01[4] |
| B−V color index | +0.40[4] |
| Astrometry | |
| Radial velocity (Rv) | −8.1[5] km/s |
| Proper motion (μ) | RA: +106.12[1] mas/yr Dec.: +6.34[1] mas/yr |
| Parallax (π) | 24.65 ± 0.37 mas[1] |
| Distance | 132 ± 2 ly (40.6 ± 0.6 pc) |
| Absolute magnitude (MV) | 3.29[2] |
| Details | |
| Luminosity | 3.9[6] L☉ |
| Surface gravity (log g) | 4.13[7] cgs |
| Temperature | 6,463[7] K |
| Metallicity [Fe/H] | −0.27±0.03[7] dex |
| Rotational velocity (v sin i) | 15[7] km/s |
| Age | 3.1[2] Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
HD 128093 is a double star in the constellation Boötes. The brighter component is an F-type main-sequence star with a stellar classification of F5V[3] and an apparent magnitude of 6.33.[2] It has a magnitude 11.33 companion at an angular separation of 28.1 along a position angle of 318°.[8]
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 Holmberg, J.; Nordström, B.; Andersen, J. (July 2009), "The Geneva-Copenhagen survey of the solar neighbourhood. III. Improved distances, ages, and kinematics", Astronomy and Astrophysics, 501 (3): 941–947, arXiv:0811.3982, Bibcode:2009A&A...501..941H, doi:10.1051/0004-6361/200811191, S2CID 118577511.
- ^ a b Hoffleit, D.; Warren Jr, W. H. (1991), Bright Star Catalogue (5th Revised (Preliminary Version) ed.), Astronomical Data Center, NSSDC/ADC, retrieved 2015-08-17
- ^ a b Mermilliod, J.-C. (1986), "Compilation of Eggen's UBV data, transformed to UBV (unpublished)", Catalogue of Eggen's UBV Data.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
- ^ Wilson, R. E. (1953), "General Catalogue of Stellar Radial Velocities", Carnegie Institute Washington D.C. Publication, Carnegie Institute of Washington, D.C., Bibcode:1953GCRV..C......0W.
- ^ 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
- ^ a b c d Balachandran, Suchitra (May 1, 1990), "Lithium depletion and rotation in main-sequence stars", Astrophysical Journal, Part 1, 354: 310–332, Bibcode:1990ApJ...354..310B, doi:10.1086/168691.
- ^ Mason, B. D.; et al. (2014), "The Washington Visual Double Star Catalog", The Astronomical Journal, 122 (6): 3466, Bibcode:2001AJ....122.3466M, doi:10.1086/323920, retrieved 2015-07-22
External links
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