Rho1 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 | A5 V[3] |
| U−B color index | +0.03[4] |
| B−V color index | +0.28[4] |
| 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 mas[1] |
| Distance | 270 ± 20 ly (83 ± 5 pc) |
| Absolute magnitude (MV) | +2.43[5] |
| Details | |
| Luminosity | 8.85[5] L☉ |
| Other designations | |
| Database references | |
| SIMBAD | data |
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. It is a white-hued A5 main sequence star.
References
- ^ a b c d e f 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, S2CID 18759600.
- ^ a b c 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, arXiv:1606.08053, Bibcode:2006AstL...32..759G, doi:10.1134/S1063773706110065, S2CID 119231169.
- ^ Andersson, B.-G.; Idzi, R.; Uomoto, Alan; Wannier, P. G.; Chen, B.; Jorgensen, A. M. (2002). "A Spectroscopic and Photometric Survey of Stars in the Field of L1457: A New Distance Determination". The Astronomical Journal. 124 (4): 2164. Bibcode:2002AJ....124.2164A. doi:10.1086/342541.
- ^ a b Oja, T. (1987). "UBV photometry of stars whose positions are accurately known". Astronomy and Astrophysics Supplement Series. 71: 561. Bibcode:1987A&AS...71..561O.
- ^ a b Anderson, E.; Francis, Ch. (2012), "XHIP: An extended hipparcos compilation", Astronomy Letters, 38 (5): 331, arXiv:1108.4971, Bibcode:2012AstL...38..331A, doi:10.1134/S1063773712050015, S2CID 119257644.
- ^ "44 Ari -- Star", SIMBAD Astronomical Database, Centre de Données astronomiques de Strasbourg, retrieved 2012-08-08.
External links
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