S Doradus
E487449
S Doradus is a luminous blue variable star and one of the most massive and brightest known stars, located in the Large Magellanic Cloud within the constellation Dorado.
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
astronomical object
ⓘ
blue supergiant ⓘ luminous blue variable star ⓘ massive star ⓘ variable star ⓘ |
| absoluteMagnitudeV | around −9.5 ⓘ |
| apparentMagnitudeV | about 8.6 to 11.5 ⓘ |
| catalogDesignation |
HD 35343
NERFINISHED
ⓘ
RMC 84 NERFINISHED ⓘ Sk −69° 94 NERFINISHED ⓘ |
| celestialHemisphere | Southern celestial hemisphere ⓘ |
| declinationEpochJ2000 | approximately −69° 15′ ⓘ |
| discoveredBy | Henrietta Swan Leavitt NERFINISHED ⓘ |
| discoveryCentury | early 20th century ⓘ |
| distanceFromEarth |
approximately 160000 light-years
ⓘ
approximately 49 kiloparsecs ⓘ |
| effectiveTemperature |
cooler in outburst
ⓘ
hotter in quiescence ⓘ |
| eponymOf | S Doradus variable class ⓘ |
| evolutionaryFuture | likely core-collapse supernova or direct collapse to black hole ⓘ |
| evolutionaryStage |
near Eddington luminosity limit
ⓘ
post-main-sequence massive star ⓘ |
| galacticEnvironment | star-forming region in the Large Magellanic Cloud ⓘ |
| hasStellarWind | strong stellar wind ⓘ |
| hostGalaxy | Large Magellanic Cloud NERFINISHED ⓘ |
| hostGalaxyType | irregular dwarf galaxy ⓘ |
| locatedIn | Large Magellanic Cloud NERFINISHED ⓘ |
| locatedInConstellation | Dorado NERFINISHED ⓘ |
| luminosity |
around 1 million to several million L☉
ⓘ
over 1000000 times solar luminosity ⓘ |
| mass |
estimated roughly 20–60 M☉
ⓘ
on the order of several tens of solar masses ⓘ |
| massLossRate | high mass-loss rate typical of luminous blue variables ⓘ |
| memberOf | Milky Way satellite galaxy system NERFINISHED ⓘ |
| namedAfter | constellation Dorado ⓘ |
| notableFor |
being prototype of S Doradus-type luminous blue variables
ⓘ
extreme luminosity variations at nearly constant bolometric luminosity ⓘ one of the brightest stars in the Large Magellanic Cloud ⓘ |
| partOf | LMC bar region NERFINISHED ⓘ |
| radius |
tens to over 100 solar radii depending on state
ⓘ
variable stellar radius ⓘ |
| rightAscensionEpochJ2000 | approximately 05h 18m ⓘ |
| spectralType |
B-type
ⓘ
B8Ia to A-type during outburst ⓘ |
| variabilityMechanism | instabilities in outer stellar envelope ⓘ |
| variableType | S Doradus variable ⓘ |
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Dorado