Rho Scorpii
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Scorpius |
Right ascension | 15h 56m 53.07624s [1] |
Declination | −29° 12′ 50.6612″ [1] |
Apparent magnitude (V) | 3.86 [2] |
Characteristics | |
Spectral type | B2IV [3] |
U−B color index | -0.82 [2] |
B−V color index | -0.20 [2] |
Astrometry | |
Radial velocity (Rv) | -0.40[4] km/s |
Proper motion (μ) | RA: -15.68[1] mas/yr Dec.: -24.88[1] mas/yr |
Parallax (π) | 6.91 ± 0.19[1] mas |
Distance | 470 ± 10 ly (145 ± 4 pc) |
Absolute magnitude (MV) | -1.94 [5] |
Other designations | |
Database references | |
SIMBAD | data |
Rho Scorpii (ρ Sco, ρ Scorpii) is a binary star in the constellation Scorpius. It is approximately 472 light years from Earth.[1]
The primary component, Rho Scorpii A, is a blue-white B-type subgiant with an apparent magnitude of +3.87. Orbiting it with a separation of 38 arcseconds is the magnitude +12.8 Rho Scorpii B.[6]
References
- 1 2 3 4 5 6 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. Vizier catalog entry
- 1 2 3 Ducati, J. R. (2002). "VizieR Online Data Catalog: Catalogue of Stellar Photometry in Johnson's 11-color system". CDS/ADC Collection of Electronic Catalogues 2237: 0. Bibcode:2002yCat.2237....0D.
- 1 2 "Rho Scorpii". SIMBAD Astronomical Database. Retrieved 2015-10-17.
- ↑ Evans, D. S. (June 20–24, 1966), "The Revision of the General Catalogue of Radial Velocities", in Batten, Alan Henry; Heard, John Frederick, Determination of Radial Velocities and their Applications, Proceedings from IAU Symposium no. 30, University of Toronto: International Astronomical Union, Bibcode:1967IAUS...30...57E
- ↑ Absolute magnitude calculated as , where is the star's absolute magnitude, is the star's apparent magnitude, and is the star's measured parallax in arcseconds.
- ↑ Dommanget, J.; et al. (2002), "Catalog of Components of Double & Multiple stars", Observations et Travaux 54 (5), Bibcode:2002yCat.1274....0D Vizier result
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