variable star UY Scuti
E481663
UY Scuti is an extremely luminous red supergiant and one of the largest known stars in the Milky Way galaxy.
Observed surface forms (1)
| Surface form | Occurrences |
|---|---|
| UY Scuti | 0 |
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
cool supergiant
ⓘ
pulsating variable star ⓘ red supergiant star ⓘ semiregular variable star ⓘ variable star ⓘ |
| hasAlternativeName |
2MASS J18351297−1254228
NERFINISHED
ⓘ
BD−12°5055 NERFINISHED ⓘ TYC 5691-1092-1 NERFINISHED ⓘ |
| hasApparentMagnitudeV |
8.0–10.0
ⓘ
8.29 ⓘ |
| hasCircumstellarEnvironment | extended dust envelope ⓘ |
| hasColor | red ⓘ |
| hasDeclination | −12° 30′ (approx) ⓘ |
| hasDiscoveryStatus | identified as variable in 19th century ⓘ |
| hasDistanceFromEarth |
~2.9 kiloparsecs
ⓘ
~9500 light-years ⓘ |
| hasEffectiveTemperature | ~3300 K ⓘ |
| hasEvolutionaryStage | late-stage massive star ⓘ |
| hasGalacticLatitude | ~−0.7° ⓘ |
| hasGalacticLongitude | ~18° ⓘ |
| hasLuminosity | ~3.5×10^5 solar luminosities ⓘ |
| hasLuminosityRange | ~3×10^5–5×10^5 solar luminosities ⓘ |
| hasMass | ~7–10 solar masses (estimated) ⓘ |
| hasObservationMethod |
photometry
ⓘ
spectroscopy ⓘ |
| hasParallax | ~0.4 milliarcseconds (very uncertain) ⓘ |
| hasPeriod | ~740 days ⓘ |
| hasPhotometricBand |
J band
ⓘ
K band ⓘ V band ⓘ |
| hasPhotometricVariabilityAmplitude | ~1–2 magnitudes in V ⓘ |
| hasRadialVelocity | ~+26 km/s (approx) ⓘ |
| hasRadius | ~1700 solar radii ⓘ |
| hasRadiusRange | ~1050–1700 solar radii ⓘ |
| hasRightAscension | 18h 35m (approx) ⓘ |
| hasSecondaryPeriod | ~1700 days ⓘ |
| hasSpectralType |
M4I
ⓘ
M4Ia ⓘ |
| hasSurfaceGravity | very low surface gravity ⓘ |
| hasVariableType | SRc ⓘ |
| isAmong |
largest known stars by radius
ⓘ
most luminous red supergiants in the Milky Way ⓘ |
| isUsedAs | example of extreme stellar radius in astronomy education ⓘ |
| locatedIn |
Milky Way
ⓘ
constellation Scutum NERFINISHED ⓘ |
| memberOf | Galactic disk NERFINISHED ⓘ |
| undergoes | significant mass loss ⓘ |
| wasCataloguedIn | Bonner Durchmusterung NERFINISHED ⓘ |
| willEndAs | core-collapse supernova (expected) ⓘ |
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Scutum