Eta Carinae
E290079
Eta Carinae is a highly luminous and unstable massive stellar system in the constellation Carina, famous for its 19th-century "Great Eruption" and its surrounding Homunculus Nebula.
All labels observed (5)
| Label | Occurrences |
|---|---|
| Eta Carinae canonical | 6 |
| η Carinae | 2 |
| Eta Carinae Great Eruption | 1 |
| V382 Carinae | 1 |
| α Carinae | 1 |
Statements (55)
| Predicate | Object |
|---|---|
| instanceOf |
binary star system
ⓘ
luminous blue variable star ⓘ massive star system ⓘ stellar system ⓘ |
| apparentMagnitude | about +4.5 (current) ⓘ |
| apparentMagnitudeRange | +1.5 to +8.0 ⓘ |
| approximateDistanceFromEarth |
2300 parsecs
ⓘ
7500 light-years ⓘ |
| binaryOrbitEccentricity | highly eccentric (e ≈ 0.9, estimated) ⓘ |
| constellation | Carina ⓘ |
| declination | −59° 41′ 04″ ⓘ |
| emitsStronglyIn |
X-rays
ⓘ
infrared ⓘ radio wavelengths ⓘ ultraviolet ⓘ |
| evolutionaryStage | late-stage massive star ⓘ |
| futureEvolution | expected to end as a core-collapse supernova or hypernova ⓘ |
| GreatEruptionEnd | circa 1858 ⓘ |
| GreatEruptionPeakMagnitude | about −1 ⓘ |
| GreatEruptionPeakYear | 1843 ⓘ |
| GreatEruptionStart | circa 1837 ⓘ |
| hasFeature |
Weigelt blobs
ⓘ
colliding-wind region between components ⓘ dense stellar wind ⓘ |
| HomunculusNebulaComposition | gas and dust ⓘ |
| HomunculusNebulaMass | several solar masses of material (estimated) ⓘ |
| HomunculusNebulaOrigin | ejecta from the Great Eruption ⓘ |
| HomunculusNebulaShape | bipolar nebula ⓘ |
| locatedIn | Carina Nebula ⓘ |
| luminosity | over 5 million times solar luminosity (estimated) ⓘ |
| mass |
about 30 solar masses (secondary, estimated)
ⓘ
over 100 solar masses (primary, estimated) ⓘ |
| notableEvent | Great Eruption ⓘ |
| observedBy |
Chandra X-ray Observatory
ⓘ
Hubble Space Telescope ⓘ Space Telescope Imaging Spectrograph ⓘ
surface form:
Hubble Space Telescope Imaging Spectrograph
Very Large Telescope ⓘ |
| orbitalPeriod | about 5.54 years ⓘ |
| otherName |
Eta Argus
ⓘ
HD 93308 ⓘ HIP 52085 ⓘ HR 4210 ⓘ Eta Carinae ⓘ
surface form:
η Carinae
|
| radialVelocityVariations | linked to 5.5-year orbital cycle ⓘ |
| rightAscension | 10h 45m 03.6s ⓘ |
| riskToEarth | no significant threat due to distance ⓘ |
| scientificSignificance |
key laboratory for studying massive star evolution
ⓘ
prototype of giant luminous blue variable eruptions ⓘ |
| spectralType |
LBV (primary component)
ⓘ
O-type (secondary component, probable) ⓘ |
| surroundedBy | Homunculus Nebula ⓘ |
| variabilityType |
eruptive variable
ⓘ
irregular variable ⓘ |
| variableStarDesignation |
Eta Carinae
self-linksurface differs
ⓘ
surface form:
V382 Carinae
|
| windMassLossRate | extremely high (orders of magnitude above Sun) ⓘ |
Referenced by (11)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
SN 1954J
this entity surface form:
Eta Carinae Great Eruption
this entity surface form:
α Carinae
subject surface form:
Carina
subject surface form:
Carina
this entity surface form:
η Carinae
this entity surface form:
V382 Carinae
this entity surface form:
η Carinae