1 Boötis
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| Observation data Epoch J2000 Equinox J2000 |
|
|---|---|
| Constellation | Boötes |
| Right ascension | 13h 40m 40.46962s[1] |
| Declination | +19° 57′ 20.5859″[1] |
| Apparent magnitude (V) | 5.71[2] |
| Characteristics | |
| Spectral type | A1 V |
| U−B color index | +0.02[2] |
| B−V color index | +0.02[2] |
| Astrometry | |
| Radial velocity (Rv) | -26[3] km/s |
| Proper motion (μ) | RA: -45.88[1] mas/yr Dec.: +22.71[1] mas/yr |
| Parallax (π) | 9.94 ± 0.54[1] mas |
| Distance | 330 ± 20 ly (101 ± 5 pc) |
| Absolute magnitude (MV) | +0.79[4] |
| Details | |
| 1 Boö A | |
| Mass | 2.54 ± 0.09[4] M☉ |
| Luminosity | 56[4] L☉ |
| Temperature | 9,863[4] K |
| Rotational velocity (v sin i) | 60[5] km/s |
| Age | 323[4] Myr |
| 1 Boö B | |
| Mass | 1.02[4] M☉ |
| Luminosity | 0.76[4] L☉ |
| Temperature | 5,370[4] K |
| Other designations | |
| Database references | |
| SIMBAD | data |
| Data sources: | |
| Hipparcos Catalogue, CCDM (2002), Bright Star Catalogue (5th rev. ed.) |
|
1 Boötis (1 Boo) is a binary star[4] in the constellation Boötes.
[edit] References
- ^ a b c d e van Leeuwen, F. (November 2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics 474 (2): 653–664, Bibcode 2007A&A...474..653V, doi:10.1051/0004-6361:20078357
- ^ a b c Lutz, T. E.; Lutz, J. H. (June 1977), "Spectral classification and UBV photometry of bright visual double stars", Astronomical Journal 82: 431–434, Bibcode 1977AJ.....82..431L, doi:10.1086/112066
- ^ Evans, D. S. (June 20–24, 1966), Batten, Alan Henry; Heard, John Frederick, eds., The Revision of the General Catalogue of Radial Velocities, University of Toronto: International Astronomical Union, Bibcode 1967IAUS...30...57E
- ^ a b c d e f g h i Hubrig, S. et al. (June 2001), "Search for low-mass PMS companions around X-ray selected late B stars", Astronomy and Astrophysics 372: 152-164, arXiv:astro-ph/0103201, Bibcode 2001A&A...372..152H, doi:10.1051/0004-6361:20010452
- ^ 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
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