variable star R Scuti

E459138

R Scuti is a luminous RV Tauri-type pulsating variable star in the constellation Scutum, notable for its large, irregular brightness variations and advanced evolutionary stage.

All labels observed (1)

Label Occurrences
variable star R Scuti canonical 3

How this entity was disambiguated

Statements (48)

Predicate Object
instanceOf RV Tauri variable ⓘ
pulsating variable star ⓘ
variable star ⓘ
apparentMagnitudeRange 4.2–8.6 ⓘ
belongsTo Milky Way ⓘ
brightnessVariation irregular ⓘ
large ⓘ
canBeObservedWithNakedEye yes ⓘ
catalogDesignation BD−05°4573 ⓘ
HD 173819 ⓘ
HIP 92175 ⓘ
HR 7065 ⓘ
R Sct ⓘ
linked to: R Scuti
colorIndex variable ⓘ
constellation Scutum ⓘ
declination −05° 42′ (approx) ⓘ
displaysPeriodChanges yes ⓘ
distanceFromEarth ~1.5 kiloparsecs ⓘ
~4900 light-years ⓘ
effectiveTemperature ~4500 K ⓘ
energySource shell hydrogen and helium burning ⓘ
evolutionaryStage highly evolved star ⓘ
post-asymptotic giant branch star ⓘ
futureEvolution will evolve into white dwarf ⓘ
galacticPopulation Population II ⓘ
hasCircumstellarEnvelope yes ⓘ
hasDustShell yes ⓘ
hasInfraredExcess yes ⓘ
hasPhotometricVariability yes ⓘ
isPrototypeOf RV Tauri variables with irregular minima ⓘ
lightCurveShape alternating deep and shallow minima ⓘ
luminosity several thousand times solar ⓘ
luminosityClass Ib ⓘ
mass ~0.6–0.8 solar masses ⓘ
metallicity subsolar ⓘ
minimumBrightnessRequiresBinoculars yes ⓘ
observedBy AAVSO ⓘ
parallax ~0.66 mas ⓘ
pulsationMode radial ⓘ
radialVelocity ~+44 km/s ⓘ
radius ~150–200 solar radii ⓘ
rightAscension 18h 47m (approx) ⓘ
showsEmissionLines yes ⓘ
spectralType G5Ib ⓘ
K2Ib ⓘ
variabilityPeriod ~140 days ⓘ
variableStarDesignation R Scuti ⓘ
variableType RV Tauri ⓘ

How these facts were elicited

Referenced by (3)

Full triples — surface form annotated when it differs from this entity's canonical label.

Scutum → contains → variable star R Scuti ⓘ
Scutum → contains → variable star R Scuti ⓘ
subject linked to: Scutum constellation
Sobieski’s Shield → contains → variable star R Scuti ⓘ