S Doradus
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Star S Doradus |
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| AladinLite | |||||||||||
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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 | ||||||||||
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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 .