HIP 21432
E587867
HIP 21432 is a star listed in the Hipparcos Catalogue, known as a visual companion to the nearby star HIP 21421.
All labels observed (1)
| Label | Occurrences |
|---|---|
| HIP 21432 canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T6287288 — 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: HIP 21432 Context triple: [HIP 21421, visualCompanion, HIP 21432]
-
A.
HIP 21421
HIP 21421 is the Hipparcos catalog designation for Aldebaran, the bright orange giant star that marks the eye of the constellation Taurus.
-
B.
HIP 21421
HIP 21421 is a star listed in the Hipparcos Catalogue, also known by its Bright Star Catalogue designation HR 1457.
-
C.
HIP 25930
HIP 25930 is the Hipparcos catalog designation for Mintaka, a bright multiple star system that forms the westernmost star in Orion’s Belt.
-
D.
HIP 25336
HIP 25336 is the Hipparcos catalog designation for Bellatrix, a prominent blue giant star in the constellation Orion.
-
E.
HIP 20889
HIP 20889 is the Hipparcos catalog designation for 87 Tauri, a star located in the constellation Taurus.
- 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: HIP 21432 Target entity description: HIP 21432 is a star listed in the Hipparcos Catalogue, known as a visual companion to the nearby star HIP 21421.
-
A.
HIP 21421
HIP 21421 is the Hipparcos catalog designation for Aldebaran, the bright orange giant star that marks the eye of the constellation Taurus.
-
B.
HIP 21421
HIP 21421 is a star listed in the Hipparcos Catalogue, also known by its Bright Star Catalogue designation HR 1457.
-
C.
HIP 25930
HIP 25930 is the Hipparcos catalog designation for Mintaka, a bright multiple star system that forms the westernmost star in Orion’s Belt.
-
D.
HIP 25336
HIP 25336 is the Hipparcos catalog designation for Bellatrix, a prominent blue giant star in the constellation Orion.
-
E.
HIP 20889
HIP 20889 is the Hipparcos catalog designation for 87 Tauri, a star located in the constellation Taurus.
- F. None of above. chosen
Statements (25)
| Predicate | Object |
|---|---|
| instanceOf |
Hipparcos star
ⓘ
star ⓘ |
| catalog | Hipparcos Catalogue NERFINISHED ⓘ |
| hasApparentMagnitudeV | about 9.7 ⓘ |
| hasAstrometricSource | Hipparcos mission NERFINISHED ⓘ |
| hasBayerFlamsteedDesignation | none ⓘ |
| hasCatalogIdentifier | HIP 21432 NERFINISHED ⓘ |
| hasColorIndexBminusV | about 0.9 ⓘ |
| hasCompanionRelationshipType | optical or wide visual companion to HIP 21421 ⓘ |
| hasCoordinateEpoch | J2000.0 ⓘ |
| hasDeclination | +22° 06′ 30″ ⓘ |
| hasDistanceFromEarth | about 71 light-years ⓘ |
| hasEquatorialCoordinateSystem | ICRS NERFINISHED ⓘ |
| hasObservationMission | Hipparcos NERFINISHED ⓘ |
| hasParallax | about 46 mas ⓘ |
| hasProperMotionInDec | about −202 mas/yr ⓘ |
| hasProperMotionInRA | about +154 mas/yr ⓘ |
| hasRightAscension | 04h 35m 55.9s ⓘ |
| hasSpectralType | K-type main-sequence star (approximate) ⓘ |
| hasVisualCompanion | HIP 21432 NERFINISHED ⓘ |
| isCompanionOf | HIP 21421 NERFINISHED ⓘ |
| isInConstellation | Taurus NERFINISHED ⓘ |
| isInGalaxy | Milky Way NERFINISHED ⓘ |
| isNearbyStar | Milky Way NERFINISHED ⓘ |
| isVisualCompanionOf | HIP 21421 ⓘ |
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: HIP 21432 Description of subject: HIP 21432 is a star listed in the Hipparcos Catalogue, known as a visual companion to the nearby star HIP 21421.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.