HD 126128
HD 126128/9 is a triple star in the northern constellation of Boötes. Two of the components (HD 126128) form a binary star system with an orbital period of 39.5 years and an eccentricity of 0.25. The third component (HD 126129), and the brightest member of the trio, lies at an angular separation of 6.250″ from the other two.[3]
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Boötes |
| Right ascension | 14h 23m 22.69526s[1] |
| Declination | +08° 26′ 47.8351″[1] |
| Apparent magnitude (V) | 6.86 + 5.14[2] |
| Characteristics | |
| HD 126128 | |
| Spectral type | F0V + F2V[3] |
| U−B color index | -0.01[2] |
| B−V color index | +0.43[2] |
| HD 126129 | |
| Spectral type | A0V[4] |
| U−B color index | −0.01[2] |
| B−V color index | +0.01[2] |
| Astrometry | |
| Radial velocity (Rv) | −23.0±1.6[5] km/s |
| Proper motion (μ) | RA: -75.89[1] mas/yr Dec.: -8.13[1] mas/yr |
| Parallax (π) | 15.17 ± 0.53[1] mas |
| Distance | 215 ± 8 ly (66 ± 2 pc) |
| Details | |
| HD 126129 | |
| Rotational velocity (v sin i) | 133[4] km/s |
| Other designations | |
ADS 9247 ABC, WDS J14234+0827A,BC | |
| HD 126128: HR 5385 | |
| HD 126129: BD+09 2882, HIP 70327, HR 5386, SAO 120426 | |
| Database references | |
| HD 126128 | |
| SIMBAD | data |
| HD 126129 | |
| SIMBAD | data |
References
- 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.
- Mermilliod, J.-C. (1986), "Compilation of Eggen's UBV data, transformed to UBV (unpublished)", Catalogue of Eggen's UBV Data. SIMBAD, Bibcode:1986EgUBV........0M
- Eggleton, P. P.; Tokovinin, A. A. (September 2008). "A catalogue of multiplicity among bright stellar systems". Monthly Notices of the Royal Astronomical Society. 389 (2): 869–879. arXiv:0806.2878. Bibcode:2008MNRAS.389..869E. doi:10.1111/j.1365-2966.2008.13596.x.
- Royer, F.; Zorec, J.; Gómez, A. E. (February 2007), "Rotational velocities of A-type stars. III. Velocity distributions", Astronomy and Astrophysics, 463 (2): 671–682, arXiv:astro-ph/0610785, Bibcode:2007A&A...463..671R, doi:10.1051/0004-6361:20065224
- Gontcharov, G. A. (November 2006). "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system". Astronomy Letters. 32 (11): 759–771. arXiv:1606.08053. Bibcode:2006AstL...32..759G. doi:10.1134/S1063773706110065.
External links
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