Rho1 Arietis
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- For other star systems with this Bayer designation, see Rho Arietis.
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Aries |
| Right ascension | 02h 54m 55.19994s[1] |
| Declination | +17° 44′ 05.1102″[1] |
| Apparent magnitude (V) | 7.01[2] |
| Characteristics | |
| Spectral type | A3[3] |
| B−V color index | 0.6[3] |
| Astrometry | |
| Radial velocity (Rv) | +3.2 ± 3.6[2] km/s |
| Proper motion (μ) | RA: +46.18[1] mas/yr Dec.: −25.50[1] mas/yr |
| Parallax (π) | 12.07 ± 0.70[1] mas |
| Distance | 270 ± 20 ly (83 ± 5 pc) |
| Other designations | |
Rho1 Arietis is the Bayer designation for a star in the northern constellation of Aries, the ram. It has an apparent visual magnitude of 7.01,[2] making it a challenge to see with the naked eye even under ideal dark-sky conditions. Based upon an annual parallax shift measurement of 12.07 mas,[1] it is 270 light-years (83 parsecs) distant from the Earth. This is a white-hued, A-type star of unknown luminosity class.
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 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.
- ↑ 2.0 2.1 2.2 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, Bibcode:2006AstL...32..759G, doi:10.1134/S1063773706110065.
- ↑ 3.0 3.1 3.2 "44 Ari -- Star", SIMBAD Astronomical Database (Centre de Données astronomiques de Strasbourg), retrieved 2012-08-08.
External links
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