Beta Doradus
E483242
Beta Doradus is a bright classical Cepheid variable star in the southern constellation Dorado, notable as an important standard candle for measuring cosmic distances.
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
Cepheid variable star
ⓘ
classical Cepheid variable ⓘ standard candle ⓘ star ⓘ |
| absoluteMagnitudeV | about −4.0 ⓘ |
| apparentMagnitudeV | 3.46 ⓘ |
| apparentMagnitudeVRange | 3.45–3.72 ⓘ |
| BayerDesignation | β Doradus NERFINISHED ⓘ |
| belongsTo | Dorado constellation NERFINISHED ⓘ |
| constellation | Dorado NERFINISHED ⓘ |
| coordinateSystem | equatorial coordinate system (J2000) ⓘ |
| declination | −62° 29′ 23″ ⓘ |
| discoveredAsVariableBy | Henrietta Swan Leavitt NERFINISHED ⓘ |
| distanceFromEarth |
about 1,000 light-years
ⓘ
about 300 parsecs ⓘ |
| effectiveTemperature | about 5,500–6,000 K ⓘ |
| evolutionaryStage | post-main-sequence supergiant ⓘ |
| galacticPopulation | Population I ⓘ |
| HDNumber | HD 37350 NERFINISHED ⓘ |
| hemisphere | southern celestial hemisphere ⓘ |
| HIPNumber | HIP 26311 NERFINISHED ⓘ |
| hostGalaxy | Milky Way NERFINISHED ⓘ |
| HRNumber | HR 1577 NERFINISHED ⓘ |
| luminosity | about 3,000 times solar luminosity ⓘ |
| mass | about 5 solar masses ⓘ |
| metallicity | near solar ⓘ |
| notableFor |
being a bright nearby Cepheid standard candle
ⓘ
helping to calibrate extragalactic distance measurements ⓘ |
| parallax | about 3.3 mas ⓘ |
| properMotionDec | about +3 mas/yr ⓘ |
| properMotionRA | about −6 mas/yr ⓘ |
| pulsationMode | fundamental mode ⓘ |
| radialVelocity | about 7 km/s ⓘ |
| radius | about 65 solar radii ⓘ |
| rightAscension | 05h 33m 37s ⓘ |
| spectralType |
F7Ib
ⓘ
G3Ib ⓘ |
| usedAs |
calibrator for the Cepheid period–luminosity relation
ⓘ
distance indicator ⓘ |
| usedIn |
Hubble constant determinations
ⓘ
cosmic distance scale calibration ⓘ |
| variabilityPeriod | 9.84 days ⓘ |
| variableStarDesignation | Beta Dor NERFINISHED ⓘ |
| variableType | Classical Cepheid ⓘ |
| visibility | best seen from southern latitudes ⓘ |
| visibleToNakedEye | true ⓘ |
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Dorado