Astronomy:Rho1 Arietis

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Short description: Star in the constellation Aries


For other stars with this Bayer designation, see ρ Arietis.
Rho1 Arietis
Observation data
Equinox J2000.0]] (ICRS)
Constellation Aries[1]
Right ascension  02h 54m 55.205s[2]
Declination +17° 44′ 05.08″[2]
Apparent magnitude (V) 7.01[3]
Characteristics
Spectral type A5 V[4]
U−B color index +0.03[5]
B−V color index +0.28[5]
Astrometry
Radial velocity (Rv)+3.2±3.6[3] km/s
Proper motion (μ) RA: +28.985[6] mas/yr
Dec.: −15.890[6] mas/yr
Parallax (π)12.5263 ± 0.1441[6] mas
Distance260 ± 3 ly
(79.8 ± 0.9 pc)
Absolute magnitude (MV)+2.43[1]
Details
Mass1.65±0.28[7] M☉
Radius1.76±0.06[7] R☉
Luminosity7.86±0.29[7] L☉
Surface gravity (log g)4.17±0.08[7] cgs
Temperature7,289±126[7] K
Other designations
Rho1 Ari, 44 Arietis, BD+17°454, GC 3492, HD 18091, HIP 13579, SAO 93178, PPM 118656[8]
Database references
SIMBADdata

Rho1 Arietis is a star in the northern constellation of Aries, the ram. Its name is a Bayer designation that is Latinized from ρ1 Arietis, and abbreviated Rho1 Ari or ρ1 Ari. This star has an apparent visual magnitude of 7.01,[3] making it a challenge to see with the naked eye even under ideal dark-sky conditions. Based upon an annual parallax shift measurement of 12.53 mas,[6] it is approximately 260 light-years (80 parsecs) distant from the Earth.

This is a white-hued A-type main-sequence star with a stellar classification of A5 V.[4] It has 1.7 times the mass of the Sun and 1.8 times the Sun's radius. The star is radiating nearly 8 times the luminosity of the Sun from its photosphere at an effective temperature of 7,289 K.[7]

References

  1. ↑ 1.0 1.1 Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters 38 (5): 331. doi:10.1134/S1063773712050015. Bibcode: 2012AstL...38..331A.  XHIP record for this object at VizieR.
  2. ↑ 2.0 2.1 Vallenari, A. et al. (2022). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy & Astrophysics. doi:10.1051/0004-6361/202243940.  Gaia DR3 record for this source at VizieR.
  3. ↑ 3.0 3.1 3.2 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, doi:10.1134/S1063773706110065, Bibcode: 2006AstL...32..759G. 
  4. ↑ 4.0 4.1 Andersson, B.-G. et al. (2002), "A Spectroscopic and Photometric Survey of Stars in the Field of L1457: A New Distance Determination", The Astronomical Journal 124 (4): 2164, doi:10.1086/342541, Bibcode: 2002AJ....124.2164A. 
  5. ↑ 5.0 5.1 Oja, T. (1987), "UBV photometry of stars whose positions are accurately known", Astronomy and Astrophysics Supplement Series 71: 561, Bibcode: 1987A&AS...71..561O. 
  6. ↑ 6.0 6.1 6.2 van Leeuwen, F. (November 2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics 474 (2): 653–664, doi:10.1051/0004-6361:20078357, Bibcode: 2007A&A...474..653V. 
  7. ↑ 7.0 7.1 7.2 7.3 7.4 7.5 Stassun, Keivan G. et al. (October 2019), "The Revised TESS Input Catalog and Candidate Target List", The Astronomical Journal 158 (4): 138, doi:10.3847/1538-3881/ab3467, ISSN 0004-6256, Bibcode: 2019AJ....158..138S. 
  8. ↑ "rho01 Ari". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=rho01+Ari. 



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