S Doradus
Star S Doradus |
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AladinLite | |||||||||||
Observation dates equinox : J2000.0 , epoch : J2000.0 |
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Constellation | Swordfish | ||||||||||
Right ascension | 05 h 18 m 14.36 s | ||||||||||
declination | −69 ° 15 ′ 1.1 ″ | ||||||||||
Apparent brightness | 10.25 (8.8 to 10.83) mag | ||||||||||
Typing | |||||||||||
B − V color index | (0.14) | ||||||||||
U − B color index | (−1.29) | ||||||||||
R − I index | (0.60) | ||||||||||
Spectral class | B8eq to F0 Iae | ||||||||||
Variable star type | SDOR | ||||||||||
Astrometry | |||||||||||
Radial velocity | (706 ± 65) km / s | ||||||||||
distance | 169000 Lj 51.800 pc |
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Visual absolute brightness M vis | −9.8 mag | ||||||||||
Proper movement | |||||||||||
Rec. Share: | (1.73 ± 0.06) mas / a | ||||||||||
Dec. portion: | (0.28 ± 0.08) mas / a | ||||||||||
Physical Properties | |||||||||||
Dimensions | ≥ 50 M ☉ | ||||||||||
radius | 390 R ☉ | ||||||||||
Luminosity |
approx. 10 6 L ☉ |
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Effective temperature | 8510 K | ||||||||||
Other names and catalog entries |
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S Doradus is one of the brightest stars in the Large Magellanic Cloud , a companion galaxy to the Milky Way . It can be found in the constellation swordfish (lat. Dorado, hence its name), which is located in the southern hemisphere. S Doradus is a luminous blue variable , so he belongs to the hypergiant . Its brightness varies from +8 to +11 mag .