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] |
| Characteristics | |
| Spectral type | M7III[1] |
| U−B color index | +0.27[3] |
| B−V color index | +1.66[3] |
| Variable type | M[2] |
| Astrometry | |
| 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 mas[1] |
| Distance | approx. 1,300 ly (approx. 400 pc) |
| Absolute magnitude (MV) | 2[4] |
| Details | |
| Radius | 300[5] R☉ |
| Other designations | |
| Database references | |
| SIMBAD | data |
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]
References
- ^ a b c d e f g h i "V* R Aur". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved November 10, 2009.
- ^ 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.
- ^ 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.
- ^ From apparent magnitude and parallax.
- ^ 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.
