EO Aurigae
| Observation data Epoch J2000 Equinox J2000 |
|
|---|---|
| Constellation | Auriga |
| Right ascension | 05h 18m 21.06592s[1] |
| Declination | +36° 37′ 55.3517″[1] |
| Apparent magnitude (V) | 7.71[2] |
| Characteristics | |
| Spectral type | B3V + B3V[3] |
| U−B color index | −0.63[2] |
| B−V color index | 0.08[2] |
| Variable type | Algol variable |
| Astrometry | |
| Radial velocity (Rv) | -1.1[4] km/s |
| Proper motion (μ) | RA: −1.67±1.71[1] mas/yr Dec.: −3.33±0.75[1] mas/yr |
| Parallax (π) | 2.12 ± 1.15[1] mas |
| Distance | approx. 1,500 ly (approx. 500 pc) |
| Details | |
| EO Aur A | |
| Mass | 6.22±0.73[5] M☉ |
| Luminosity (bolometric) | 2,784[5] L☉ |
| Temperature | 13,360[5] K |
| Age | 23.6±8.0[3] Myr |
| EO Aur B | |
| Mass | 5.00±2.57[5] M☉ |
| Luminosity (bolometric) | 1377[5] L☉ |
| Temperature | 11,650[5] K |
| Other designations | |
| Database references | |
| SIMBAD | data |
| Data sources: | |
| Hipparcos Catalogue, CCDM (2002), Bright Star Catalogue (5th rev. ed.) |
|
EO Aurigae is an eclipsing binary of Algol type in the northern constellation of Auriga. With a combined apparent magnitude of 7.71,[2] it is too faint to be seen with the unaided eye.
The eclipsing binary nature of the star was detected in 1943 by Sergei Gaposchkin at Harvard College Observatory.[6] It consists of a pair of B-type main sequence stars orbiting each other with a period of 4.0656 days. During the eclipse of the primary star, the combined magnitude drops by 0.57; the eclipse of the secondary component drops the magnitude by 0.33.[7]
References
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- ↑ 1.0 1.1 1.2 1.3 1.4 Lua error in package.lua at line 80: module 'strict' not found. Vizier catalog entry
- ↑ 2.0 2.1 2.2 2.3 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 3.0 3.1 Lua error in package.lua at line 80: module 'strict' not found.
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- ↑ 5.0 5.1 5.2 5.3 5.4 5.5 Lua error in package.lua at line 80: module 'strict' not found.
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