R Aurigae

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R Aurigae
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Auriga
Right ascension  05h 17m 17.6907s[1]
Declination +53° 35′ 10.042″[1]
Apparent magnitude (V) 6.7 to 13.9[2]
Spectral type M7III[1]
U−B color index +0.27[3]
B−V color index +1.66[3]
Variable type M[2]
Radial velocity (Rv)7.8 ± 2[1] km/s
Proper motion (μ) RA: 2.28[1] mas/yr
Dec.: −14.68[1] mas/yr
Parallax (π)2.42 ± 1.60[1] mas
Distanceapprox. 1,300 ly
(approx. 400 pc)
Absolute magnitude (MV)2[4]
Radius300[5] R
Other designations
R Aur, ADS 3845 A, BD+53 882, CCDM J05173+5335A, GC 6435, HD 34019, HIP 24645, HR 1707, IDS 05092+5328 A, SAO 25112.[1]
Database references

R Aurigae (R Aur) is a M-type giant star in the constellation of Auriga.[1] It has an apparent visual magnitude which varies between 6.7 and 13.9.[2]


  1. ^ a b c d e f g h i "V* R Aur". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved November 10, 2009.
  2. ^ a b c R Aur, database entry, The combined table of GCVS Vols I-III and NL 67-78 with improved coordinates, General Catalogue of Variable Stars, Sternberg Astronomical Institute, Moscow, Russia. Accessed on line November 10, 2009.
  3. ^ a b HR 1707, database entry, The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version), D. Hoffleit and W. H. Warren, Jr., CDS ID V/50. Accessed on line November 10, 2009.
  4. ^ From apparent magnitude and parallax.
  5. ^ HD 34019, database entry, Catalog of Apparent Diameters and Absolute Radii of Stars (CADARS), 3rd edition, L. E. Pasinetti-Fracassini, L. Pastori, S. Covino, and A. Pozzi, CDS ID II/224. Accessed on line November 10, 2009.