R Scuti
E483243
R Scuti is a luminous, pulsating yellow supergiant star in the constellation Scutum, known as one of the brightest and most studied RV Tauri variable stars.
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
RV Tauri variable star
ⓘ
pulsating variable star ⓘ star ⓘ yellow supergiant ⓘ |
| apparentMagnitudeV |
4.5
ⓘ
8.9 ⓘ |
| belongsToConstellation | Scutum NERFINISHED ⓘ |
| brightnessVariationType | semiregular deep and shallow minima ⓘ |
| catalogIdentifier |
AAVSO 1829-05
NERFINISHED
ⓘ
BD−05° 4729 NERFINISHED ⓘ HD 173819 NERFINISHED ⓘ HIP 92175 NERFINISHED ⓘ HR 7065 NERFINISHED ⓘ SAO 142996 NERFINISHED ⓘ |
| colorIndex | yellow to orange ⓘ |
| constellation | Scutum NERFINISHED ⓘ |
| declination | −05° 42′ (approximate) ⓘ |
| discoverer | Edward Pigott NERFINISHED ⓘ |
| discoveryYear | 1795 ⓘ |
| distanceFromEarth_ly | approximately 1400 ⓘ |
| distanceFromEarth_pc | approximately 430 ⓘ |
| evolutionaryStage |
post-AGB object
ⓘ
post-asymptotic giant branch star ⓘ |
| galacticComponent | thick disk or halo population ⓘ |
| hasCircumstellarMaterial | yes ⓘ |
| hemisphere | celestial equator region ⓘ |
| lightCurveCharacteristic |
alternating deep and shallow minima
ⓘ
irregular cycle lengths ⓘ |
| locationInGalaxy | Milky Way NERFINISHED ⓘ |
| luminosityComparedToSun | several thousand times solar luminosity ⓘ |
| massLoss | experiences stellar wind and mass loss ⓘ |
| meanPulsationPeriod_days | about 70 ⓘ |
| metallicity | low metallicity compared to Sun ⓘ |
| notableFor |
extensively observed by amateur and professional astronomers
ⓘ
one of the brightest RV Tauri stars in the sky ⓘ prototype-like RV Tauri variability ⓘ |
| observability |
requires binoculars or small telescope at minimum
ⓘ
visible to naked eye at maximum ⓘ |
| periodRange_days | about 60 to 150 ⓘ |
| population | Population II star ⓘ |
| pulsationMechanism | radial pulsations ⓘ |
| rightAscension | 18h 47m (approximate) ⓘ |
| spectralClassRange | G–K supergiant ⓘ |
| spectralType |
G0Ib
ⓘ
K2Ib ⓘ |
| usedFor |
calibration of RV Tauri period–luminosity relations
ⓘ
studies of late stellar evolution ⓘ |
| variableStarDesignation | R Sct NERFINISHED ⓘ |
| variableStarType | RV Tauri NERFINISHED ⓘ |
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Scutum