R Aurigae
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| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Auriga |
| Right ascension | Template:RA[2] |
| Declination | Template:DEC[2] |
| Apparent magnitude (V) | 6.7 to 13.9[3] |
| Characteristics | |
| Spectral type | M7IIIe[4] (M6e - M9e)[3] |
| U−B Template:Engvar | +0.27[5] |
| B−V Template:Engvar | +1.66[5] |
| Variable type | Mira[3] |
| Astrometry | |
| Radial velocity (Rv) | 7.8 ± 2[6] km/s |
| Proper motion (μ) | RA: 14.708[2] mas/yr Dec.: −14.685[2] mas/yr |
| Parallax (π) | 3.4958±0.1327 mas[2] |
| Distance | Template:Rnd ± Template:Rnd ly (Template:Rnd ± Template:Rnd pc) |
| Details | |
| Radius | 300[7] Template:Solar radius |
| Luminosity | 11,530[8] Template:Solar luminosity |
| Temperature | 2,385[8] K |
| Metallicity [Fe/H] | {{{metal_fe2}}} dex |
| 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[6] | |
| Database references | |
| SIMBAD | data |
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R Aurigae (R Aur) is a Mira variable, a pulsating red giant star in the constellation of Auriga, at a distance of Script error: No such module "val"..
In 1862 R Aurigae was found to be a variable star at Bonn Observatory.[9] It was widely observed in the late 19th century and its spectrum was described in 1890.[10] In 1907 it appeared with its variable star designation in Annie Jump Cannon's Second Catalogue of Variable Stars.[9] R Aurigae has an apparent visual magnitude which varies between 6.7 and 13.9 with a period of 450 days.[3] The light curve varies strongly from cycle to cycle, sometimes having a pronounced hump on the ascending branch and usually having rise and fall times approximately equal. The cycle period has oscillated slowly between about 450 and 465 days.
R Aurigae is catalogued as a component of a double star, with the 10th magnitude HD 233095, although the two stars are unrelated.[11]
References
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- ↑ Script error: No such module "citation/CS1".
- ↑ a b c d e Template:Cite Gaia EDR3
- ↑ a b c d R Aur, database entry, The combined table of GCVS Vols I-III and NL 67-78 with improved coordinates, General Catalogue of Variable Stars Template:Webarchive, Sternberg Astronomical Institute, Moscow, Russia. Accessed on line November 10, 2009.
- ↑ Script error: No such module "Citation/CS1".
- ↑ 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.
- ↑ a b Template:Cite simbad
- ↑ 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.
- ↑ a b Script error: No such module "Citation/CS1".
- ↑ a b Script error: No such module "Citation/CS1".
- ↑ Script error: No such module "citation/CS1".
- ↑ Script error: No such module "Citation/CS1".
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