red supergiant V399 Carinae (within field, often associated observationally)
E753982
Red supergiant V399 Carinae is a highly luminous, evolved massive star in the constellation Carina, notable for its extreme size and brightness and its frequent inclusion in observations of nearby star clusters.
All labels observed (1)
| Label | Occurrences |
|---|---|
| red supergiant V399 Carinae (within field, often associated observationally) canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T8717213 — 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: red supergiant V399 Carinae (within field, often associated observationally) Context triple: [Jewel Box cluster, containsNotableStar, red supergiant V399 Carinae (within field, often associated observationally)]
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A.
variable star VY Scuti
Variable star VY Scuti is a highly luminous red supergiant located in the constellation Scutum and is among the largest known stars by radius.
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B.
redSupergiant Stephenson 2-18
Stephenson 2-18 is an extremely luminous red supergiant star, considered one of the largest known stars in the Milky Way.
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C.
Eta Carinae
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.
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D.
variable star UY Scuti
UY Scuti is an extremely luminous red supergiant and one of the largest known stars in the Milky Way galaxy.
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E.
Cepheid
Cepheid is a molecular diagnostics company known for its rapid, automated PCR-based testing systems used in clinical and research settings.
- 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: red supergiant V399 Carinae (within field, often associated observationally) Target entity description: Red supergiant V399 Carinae is a highly luminous, evolved massive star in the constellation Carina, notable for its extreme size and brightness and its frequent inclusion in observations of nearby star clusters.
-
A.
variable star VY Scuti
Variable star VY Scuti is a highly luminous red supergiant located in the constellation Scutum and is among the largest known stars by radius.
-
B.
redSupergiant Stephenson 2-18
Stephenson 2-18 is an extremely luminous red supergiant star, considered one of the largest known stars in the Milky Way.
-
C.
Eta Carinae
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.
-
D.
variable star UY Scuti
UY Scuti is an extremely luminous red supergiant and one of the largest known stars in the Milky Way galaxy.
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E.
Cepheid
Cepheid is a molecular diagnostics company known for its rapid, automated PCR-based testing systems used in clinical and research settings.
- F. None of above. chosen
Statements (29)
| Predicate | Object |
|---|---|
| instanceOf |
cool luminous supergiant
ⓘ
red supergiant star ⓘ |
| associatedWith | nearby star clusters in Carina ⓘ |
| brightnessCategory | supergiant luminosity ⓘ |
| celestialObjectType | star ⓘ |
| color | red ⓘ |
| constellation | Carina ⓘ |
| energySource | nuclear fusion in stellar core ⓘ |
| evolution | late stage of massive star evolution ⓘ |
| evolutionaryFuture | likely core-collapse supernova progenitor ⓘ |
| evolutionaryStage | evolved massive star ⓘ |
| galaxy | Milky Way ⓘ |
| hemisphere | southern celestial hemisphere ⓘ |
| locatedIn |
Milky Way galaxy
ⓘ
linked to:
Milky Way
constellation Carina ⓘ |
| luminosity | highly luminous ⓘ |
| luminosityClass | I ⓘ |
| massCategory | massive star ⓘ |
| notableFor |
being a red supergiant
ⓘ
extreme size ⓘ high brightness ⓘ |
| observationalContext |
frequently included in photometric studies of Carina region
ⓘ
often observed in fields containing nearby star clusters ⓘ |
| population | Population I star ⓘ |
| radiusCategory | very large stellar radius ⓘ |
| spectralClass | M-type supergiant ⓘ |
| surfaceTemperatureCategory | low effective temperature compared to Sun ⓘ |
| temperatureCategory | cool star ⓘ |
| variability | variable brightness ⓘ |
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: red supergiant V399 Carinae (within field, often associated observationally) Description of subject: Red supergiant V399 Carinae is a highly luminous, evolved massive star in the constellation Carina, notable for its extreme size and brightness and its frequent inclusion in observations of nearby star clusters.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.
Jewel Box cluster
→
containsNotableStar
→
red supergiant V399 Carinae (within field, often associated observationally)
ⓘ