AR Aurigae
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Auriga |
| Right ascension | 05h 18m 18.900s[1] |
| Declination | +33° 46′ 02.45″[1] |
| Apparent magnitude (V) | 6.143 |
| Characteristics | |
| Spectral type | B9.5V |
| U−B color index | -0.18 |
| B−V color index | -0.06 |
| Variable type | Algol variable |
| Astrometry | |
| Radial velocity (Rv) | 25.4 km/s |
| Proper motion (μ) | RA: 16.44 ± 0.47[1] mas/yr Dec.: -29.23 ± 0.20[1] mas/yr |
| Parallax (π) | 8.19 ± 0.47[1] mas |
| Distance | 400 ± 20 ly (122 ± 7 pc) |
| Absolute magnitude (MV) | 6.099 |
| Details | |
| Mass | 18 M☉ |
| Radius | 7 R☉ |
| Luminosity | 20,000 L☉ |
| Temperature | 10,000–30,000 K |
| Rotation | 58 km/s 0,0167514 Year |
| Other designations | |
| Database references | |
| SIMBAD | data |
| Data sources: | |
| Hipparcos Catalogue, CCDM (2002), Bright Star Catalogue (5th rev. ed.) | |
AR Aurigae (AR Aur) is an eclipsing binary in the constellation Auriga. It is approximately 400 light-years from Earth.[1]
Both components are blue-white B-type or main sequence dwarfs which do not fill their Roche lobes. The system has a with a mean apparent magnitude of +6.15 but because of the eclipses, AR Aurigae is a variable star and its brightness varies from magnitude +6.15 to +6.82 with a period of 4.13 days.
References
- 1 2 3 4 5 6 van Leeuwen, F. (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. Vizier catalog entry
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