Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Auriga |
Right ascension | 05h 18m 21.06592s [2] |
Declination | +36° 37′ 55.3517″ [2] |
Apparent magnitude (V) | 7.71 [3] |
Characteristics | |
Spectral type | B3V + B3V [4] |
U−B color index | −0.63 [3] |
B−V color index | 0.08 [3] |
Variable type | Algol variable |
Astrometry | |
Radial velocity (Rv) | -1.1 [5] km/s |
Proper motion (μ) |
RA: −1.67±1.71
[2]
mas/
yr Dec.: −3.33±0.75 [2] mas/ yr |
Parallax (π) | 2.12 ± 1.15 mas [2] |
Distance | approx. 1,500
ly (approx. 500 pc) |
Details | |
EO Aur A | |
Mass | 6.22±0.73 [6] M☉ |
Luminosity (bolometric) | 2,784 [6] L☉ |
Temperature | 13,360 [6] K |
Age | 23.6±8.0 [4] Myr |
EO Aur B | |
Mass | 5.00±2.57 [6] M☉ |
Luminosity (bolometric) | 1377 [6] L☉ |
Temperature | 11,650 [6] K |
Other designations | |
Database references | |
SIMBAD | data |
EO Aurigae is an eclipsing binary of Algol type in the northern constellation of Auriga. With a combined apparent magnitude of 7.71, [3] 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. [7] 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. [8]
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Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Auriga |
Right ascension | 05h 18m 21.06592s [2] |
Declination | +36° 37′ 55.3517″ [2] |
Apparent magnitude (V) | 7.71 [3] |
Characteristics | |
Spectral type | B3V + B3V [4] |
U−B color index | −0.63 [3] |
B−V color index | 0.08 [3] |
Variable type | Algol variable |
Astrometry | |
Radial velocity (Rv) | -1.1 [5] km/s |
Proper motion (μ) |
RA: −1.67±1.71
[2]
mas/
yr Dec.: −3.33±0.75 [2] mas/ yr |
Parallax (π) | 2.12 ± 1.15 mas [2] |
Distance | approx. 1,500
ly (approx. 500 pc) |
Details | |
EO Aur A | |
Mass | 6.22±0.73 [6] M☉ |
Luminosity (bolometric) | 2,784 [6] L☉ |
Temperature | 13,360 [6] K |
Age | 23.6±8.0 [4] Myr |
EO Aur B | |
Mass | 5.00±2.57 [6] M☉ |
Luminosity (bolometric) | 1377 [6] L☉ |
Temperature | 11,650 [6] K |
Other designations | |
Database references | |
SIMBAD | data |
EO Aurigae is an eclipsing binary of Algol type in the northern constellation of Auriga. With a combined apparent magnitude of 7.71, [3] 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. [7] 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. [8]
bkkv