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Rho1 Arietis

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Star in the constellation Aries For other stars with this Bayer designation, see ρ Arietis.

Rho Arietis
Observation data Epoch J2000.0 Equinox J2000.0 (ICRS)
Constellation	Aries
Right ascension	02 54 55.19994
Declination	+17° 44′ 05.1102″
Apparent magnitude (V)	7.01
Characteristics
Spectral type	A5 V
U−B color index	+0.03
B−V color index	+0.28
Astrometry

Radial velocity (R_v)	+3.2 ± 3.6 km/s
Proper motion (μ)	RA: +46.18 mas/yr Dec.: −25.50 mas/yr
Parallax (π)	12.07 ± 0.70 mas
Distance	270 ± 20 ly (83 ± 5 pc)
Absolute magnitude (M_V)	+2.43

Details

Luminosity	8.85 `L`_☉

Other designations
Rho Ari, 44 Arietis, BD+17°454, GC 3492, HD 18091, HIP 13579, SAO 93178.
Database references
SIMBAD	data

Rho 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, 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, it is 270 light-years (83 parsecs) distant from the Earth. It is a white-hued A5 main sequence star.

References

^ 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.
^ 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.
^ Oja, T. (1987). "UBV photometry of stars whose positions are accurately known". Astronomy and Astrophysics Supplement Series. 71: 561. Bibcode:1987A&AS...71..561O.
^ 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

Image Rho Arietis

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Constellation of Aries

Bayer	α (Hamal) β (Sheratan) γ (Mesarthim) δ (Botein) ε ζ η θ ι κ λ μ ν ξ ο π ρ ρ ρ σ τ τ
Flamsteed	1 4 7 10 11 14 15 16 19 20 21 23 26 27 29 30 31 33 35 36 38 39 (Lilii Borea) 40 41 (Bharani) 47 49 50 51 52 53 54 55 56 59 60 62 64 65 66 54 Cet 85 Cet
Variable	TZ UX VZ (16 Tri)
HR	577 728 803 952 999
HD	12661 20367
Other	BD+20°307 HIP 14810 HAT-P-25 Teegarden's Star WASP-11/HAT-P-10 WD 0145+234

Exoplanets	α Arietis b HD 12661 b c HIP 14810 b c d Teegarden's Star b c WASP-11b/HAT-P-10b

NGC	677 680 691 694 695 716 765 770 772 781 803 817 820 821 871 877 900 901 903 904 918 935 938 972 990 992 1024 1134 1156
Other	1ES 0229+200 3C 79 4C +28.07 AO 0235+164 IC 167 IC 1801 PSO J0309+27 Segue 2 UGC 2140

Galaxy clusters	MS 0302+17

Astronomical events	GRB 060218

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