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 |
How this entity was disambiguated
This entity first appeared as the object of triple T2706371 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Eta Carinae Context triple: [Carina Nebula, contains, Eta Carinae]
-
A.
Baade’s star
Baade’s star is a luminous, variable star in the Andromeda Galaxy notable for its role in Walter Baade’s work refining the cosmic distance scale.
-
B.
Betelgeuse
Betelgeuse is a massive red supergiant star in the constellation Orion, notable for its brightness and status as a likely future supernova.
-
C.
30 Doradus
30 Doradus, also known as the Tarantula Nebula, is a vast and intensely active star-forming region and emission nebula in the Large Magellanic Cloud.
-
D.
Cepheid
Cepheid is a molecular diagnostics company known for its rapid, automated PCR-based testing systems used in clinical and research settings.
-
E.
Betelgeuse Five
Betelgeuse Five is the fictional home planet of Zaphod Beeblebrox in Douglas Adams' "The Hitchhiker's Guide to the Galaxy" series.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Eta Carinae Target entity description: 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.
-
A.
Baade’s star
Baade’s star is a luminous, variable star in the Andromeda Galaxy notable for its role in Walter Baade’s work refining the cosmic distance scale.
-
B.
Betelgeuse
Betelgeuse is a massive red supergiant star in the constellation Orion, notable for its brightness and status as a likely future supernova.
-
C.
30 Doradus
30 Doradus, also known as the Tarantula Nebula, is a vast and intensely active star-forming region and emission nebula in the Large Magellanic Cloud.
-
D.
Cepheid
Cepheid is a molecular diagnostics company known for its rapid, automated PCR-based testing systems used in clinical and research settings.
-
E.
Betelgeuse Five
Betelgeuse Five is the fictional home planet of Zaphod Beeblebrox in Douglas Adams' "The Hitchhiker's Guide to the Galaxy" series.
- F. None of above. chosen
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) ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Eta Carinae Description of subject: 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.
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