HD 125351 or A Boötis (A Boo) is spectroscopic binary[6] in the constellation Boötes. The system has an apparent magnitude of +4.97, with a spectrum matching a K-type giant star. It is approximately 233 light-years from Earth.
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Boötes |
| Right ascension | 14h 17m 59.81955s[1] |
| Declination | +35° 30′ 34.2208″[1] |
| Apparent magnitude (V) | 4.9660±0.0007[2] |
| Characteristics | |
| Spectral type | K1III[3] |
| Astrometry | |
| Radial velocity (Rv) | −21.6±0.3[2] km/s |
| Proper motion (μ) | RA: 4.87[1] mas/yr Dec.: 14.40[1] mas/yr |
| Parallax (π) | 13.97 ± 0.39 mas[1] |
| Distance | 233 ± 7 ly (72 ± 2 pc) |
| Orbit[4] | |
| Primary | A Boötis B |
| Companion | A Boötis B |
| Period (P) | 212.085 days |
| Semi-major axis (a) | 2.3 mas |
| Eccentricity (e) | 0.570 |
| Inclination (i) | 83.5° |
| Longitude of the node (Ω) | 195.2° |
| Periastron epoch (T) | 2,440,286.002 |
| Argument of periastron (ω) (secondary) | 224.9° |
| Details | |
| Surface gravity (log g) | 2.25[5] cgs |
| Temperature | 4,650[5] K |
| Metallicity [Fe/H] | −0.03[5] 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.
- ^ Griffin, R. F. (1961), "Photoelectric measurements of the lambda5250A Fe I triplet and the D lines in G and K stars", Monthly Notices of the Royal Astronomical Society, 122: 181, Bibcode:1961MNRAS.122..181G, doi:10.1093/mnras/122.3.181.
- ^ Ren, Shulin (2013). "Hipparcos Photocentric Orbits of 72 Single-lined Spectroscopic Binaries". The Astronomical Journal. 145 (3): 81. Bibcode:2013AJ....145...81R. doi:10.1088/0004-6256/145/3/81. S2CID 120199240.
- ^ a b c Luck, R. Earle; Challener, Sharon L. (December 1995), "Chemical Abundances for Very Strong-Lined Giants", Astronomical Journal, 110: 2968, Bibcode:1995AJ....110.2968L, doi:10.1086/117741.
- ^ Pourbaix, D.; Boffin, H. M. J. (February 2003), "Reprocessing the Hipparcos Intermediate Astrometric Data of spectroscopic binaries. II. Systems with a giant component", Astronomy and Astrophysics, 398 (3): 1163–1177, arXiv:astro-ph/0211483, Bibcode:2003A&A...398.1163P, doi:10.1051/0004-6361:20021736, S2CID 12361870.
External links
edit
 | This binary or multiple star system-related article is a stub. You can help Wikipedia by expanding it. |