S Doradus

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**S Doradus**
Observation data Epoch J2000
S Doradus
Constellation (pronunciation)	Dorado
Right ascension	05h 18m 14.35s
Declination	-69° 15' 01.1"'
Apparent magnitude (V)	9.721
Characteristics
Spectral type	A0
U-B color index	?
B-V color index	?
Variable type	Variable Star of irregular type
Astrometry
Radial velocity (R_v)	228 km/s
Absolute magnitude (M_V)	9.882
Distance	169.000 Ly (51815.06 pc)
Details
Mass	60 M_☉
Radius	390 R_☉
Surface gravity (log g)	?
Luminosity	500.000 L_☉
Temperature	10.000 K
Metallicity	?
Rotation	40 year
Age	? years
Visual binary orbit
Other designations
RMC 88, CD-69° 295, GSC 09162-00057, SK -69° 94, CPC 21.1 778, HD 35343, CPD-69° 356, IRAS 05182-6918, TYC 9162-57-1, AAVSO 0518-69, JP11 1060, UBV M 10914, GCRV 56122, LHA 120-S 96, UCAC2 1799310.
Database references
SIMBAD	data

S Doradus is the brightest star in the Large Magellanic Cloud, a satellite galaxy of the Milky Way. A hypergiant, it is one of the most luminous stars known (sometimes more luminous than −10 absolute magnitude), but so far away that it is invisible to the naked eye.

Some have speculated that S Doradus may be a binary star. However, the data present has proved to be inconclusive.^{[citation needed]}

This star belongs to its own eponymous S Doradus class of variable stars (these classes are usually named after their prototypes); also designated as the class luminous blue variable or LBV. S Doradus exhibits long, slow changes in brightness, punctuated by occasional outbursts.