U Sagittarii
E459055
U Sagittarii is a classical Cepheid variable star in the constellation Sagittarius, notable for its periodic brightness variations used to measure cosmic distances.
Statements (30)
| Predicate | Object |
|---|---|
| instanceOf |
Cepheid variable
ⓘ
classical Cepheid variable star ⓘ variable star ⓘ |
| apparentMagnitudeBand | visual ⓘ |
| belongsTo | Milky Way NERFINISHED ⓘ |
| celestialCategory | star ⓘ |
| constellation | Sagittarius NERFINISHED ⓘ |
| declinationCoordinateSystem | ICRS NERFINISHED ⓘ |
| distanceIndicator | period–luminosity relation ⓘ |
| evolutionaryStage | post-main-sequence star ⓘ |
| hasDesignation |
U Sag
NERFINISHED
ⓘ
U Sgr NERFINISHED ⓘ |
| hasPeriodicBrightnessVariations | true ⓘ |
| hemisphere | southern celestial hemisphere ⓘ |
| isLuminous | true ⓘ |
| isStandardCandle | true ⓘ |
| lightCurveType | Cepheid-type ⓘ |
| locatedIn | constellation Sagittarius ⓘ |
| observedBy |
ground-based telescopes
ⓘ
space-based observatories ⓘ |
| populationType | Population I star ⓘ |
| pulsationMode | fundamental mode ⓘ |
| rightAscensionCoordinateSystem | ICRS NERFINISHED ⓘ |
| spectralType | F-type supergiant ⓘ |
| usedIn |
studies of period–luminosity relation
ⓘ
studies of stellar pulsation ⓘ |
| uses |
cosmic distance scale calibration
ⓘ
distance measurement in astronomy ⓘ |
| variabilityMechanism | radial pulsation ⓘ |
| variableType | Classical Cepheid ⓘ |
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.