1 Boötis
| 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 at 327 light years away.[4] in the constellation Boötes.
References
- 1 2 3 4 5 van Leeuwen, F. (November 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
- 1 2 3 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 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
- 1 2 3 4 5 6 7 8 9 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
External links
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
This article is issued from Wikipedia - version of the Friday, June 26, 2015. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.