c Tauri
E581537
c Tauri is a Bayer-designated star in the constellation Taurus, known in modern catalogs as 87 Tauri.
All labels observed (1)
| Label | Occurrences |
|---|---|
| c Tauri canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T6287128 — 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: c Tauri Context triple: [87 Tauri, hasBayerDesignation, c Tauri]
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A.
Tau Ceti e
Tau Ceti e is a potentially rocky exoplanet orbiting in the inner region of the nearby Sun-like star Tau Ceti’s habitable zone.
-
B.
R Coronae Australis
R Coronae Australis is a young variable star embedded in the Corona Australis star-forming region, notable for its irregular brightness changes and association with reflection nebulosity.
-
C.
Theta1 Orionis C
Theta1 Orionis C is the most massive and luminous star in the Trapezium cluster at the heart of the Orion Nebula, dominating its energetic radiation and stellar environment.
-
D.
Zeta Tucanae
Zeta Tucanae is a main-sequence F-type star located in the southern constellation Tucana, visible to the naked eye from dark-sky locations.
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E.
87 Tauri
87 Tauri is a star in the constellation Taurus, known as the Flamsteed-designated counterpart of the bright giant Aldebaran.
- 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: c Tauri Target entity description: c Tauri is a Bayer-designated star in the constellation Taurus, known in modern catalogs as 87 Tauri.
-
A.
Tau Ceti e
Tau Ceti e is a potentially rocky exoplanet orbiting in the inner region of the nearby Sun-like star Tau Ceti’s habitable zone.
-
B.
R Coronae Australis
R Coronae Australis is a young variable star embedded in the Corona Australis star-forming region, notable for its irregular brightness changes and association with reflection nebulosity.
-
C.
Theta1 Orionis C
Theta1 Orionis C is the most massive and luminous star in the Trapezium cluster at the heart of the Orion Nebula, dominating its energetic radiation and stellar environment.
-
D.
Zeta Tucanae
Zeta Tucanae is a main-sequence F-type star located in the southern constellation Tucana, visible to the naked eye from dark-sky locations.
-
E.
87 Tauri
87 Tauri is a star in the constellation Taurus, known as the Flamsteed-designated counterpart of the bright giant Aldebaran.
- F. None of above. chosen
Statements (44)
| Predicate | Object |
|---|---|
| instanceOf | star ⓘ |
| cataloguedIn |
BonnerDurchmusterung
NERFINISHED
ⓘ
BrightStarCatalogue NERFINISHED ⓘ HenryDraperCatalogue NERFINISHED ⓘ HipparcosCatalogue NERFINISHED ⓘ SAOCatalogue NERFINISHED ⓘ |
| hasApparentMagnitudeV | about 4.2 ⓘ |
| hasApproximateEffectiveTemperature | about 5600–5800 K (approximate) ⓘ |
| hasApproximateLuminosity | about 2–4 timesSolar (approximate) ⓘ |
| hasApproximateMass | about 1 solarMass (approximate) ⓘ |
| hasApproximateRadius | about 1–2 solarRadii (approximate) ⓘ |
| hasBayerDesignation | c Tauri NERFINISHED ⓘ |
| hasBDNumber | BD+21 0674 NERFINISHED ⓘ |
| hasBrightStarCatalogueNumber | HR 1368 NERFINISHED ⓘ |
| hasCatalogIdentifier |
87 Tauri
NERFINISHED
ⓘ
BD+21 0674 NERFINISHED ⓘ FK5 166 NERFINISHED ⓘ HD 27697 NERFINISHED ⓘ HIP 20455 NERFINISHED ⓘ HR 1368 NERFINISHED ⓘ SAO 76588 NERFINISHED ⓘ |
| hasColorIndexBminusV | about 0.7 (approximate) ⓘ |
| hasDeclination | +21° (approximate) ⓘ |
| hasDistanceFromEarth | about 150 light-years (approximate) ⓘ |
| hasEquatorialCoordinateSystem | ICRS NERFINISHED ⓘ |
| hasFlamsteedDesignation | 87 Tauri NERFINISHED ⓘ |
| hasGalacticPopulation | thinDiskStar ⓘ |
| hasHenryDraperNumber | HD 27697 NERFINISHED ⓘ |
| hasHipparcosNumber | HIP 20455 NERFINISHED ⓘ |
| hasLuminosityClass | mainSequenceOrSubgiant (approximate) ⓘ |
| hasParallax | about 21 mas (approximate) ⓘ |
| hasProperMotion | measurableProperMotionInRAandDec ⓘ |
| hasRadialVelocity | about +38 km/s (approximate) ⓘ |
| hasRightAscension | 04h 25m (approximate) ⓘ |
| hasSAONumber | SAO 76588 NERFINISHED ⓘ |
| hasSpectralType | G-type (approximate/commonly cataloged as G star) ⓘ |
| hasVariableDesignation | noneKnownSignificant ⓘ |
| isNorthernHemisphereObject | true ⓘ |
| locatedIn | constellation Taurus NERFINISHED ⓘ |
| locatedInConstellation | Taurus NERFINISHED ⓘ |
| memberOf | Milky Way NERFINISHED ⓘ |
| observedIn | opticalWavelengths ⓘ |
| partOf | Taurus constellationRegion NERFINISHED ⓘ |
| visibleIn | nakedEye ⓘ |
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: c Tauri Description of subject: c Tauri is a Bayer-designated star in the constellation Taurus, known in modern catalogs as 87 Tauri.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.