HIP 21421
E583971
HIP 21421 is a star listed in the Hipparcos Catalogue, also known by its Bright Star Catalogue designation HR 1457.
All labels observed (1)
| Label | Occurrences |
|---|---|
| HIP 21421 canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T6287173 — 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 21421 Context triple: [HR 1457, catalogDesignation, 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 25336
HIP 25336 is the Hipparcos catalog designation for Bellatrix, a prominent blue giant star in the constellation Orion.
-
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 26311
HIP 26311 is the Hipparcos catalog designation for Alnilam, the bright blue supergiant star forming the central point of Orion’s Belt.
-
E.
HIP 26727
HIP 26727 is the Hipparcos catalog designation for Alnitak, a bright multiple star system forming the easternmost star of Orion’s Belt.
- 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 21421 Target entity description: HIP 21421 is a star listed in the Hipparcos Catalogue, also known by its Bright Star Catalogue designation HR 1457.
-
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 25336
HIP 25336 is the Hipparcos catalog designation for Bellatrix, a prominent blue giant star in the constellation Orion.
-
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 26311
HIP 26311 is the Hipparcos catalog designation for Alnilam, the bright blue supergiant star forming the central point of Orion’s Belt.
-
E.
HIP 26727
HIP 26727 is the Hipparcos catalog designation for Alnitak, a bright multiple star system forming the easternmost star of Orion’s Belt.
- F. None of above. chosen
Statements (11)
| Predicate | Object |
|---|---|
| instanceOf | star ⓘ |
| catalogue |
Bright Star Catalogue
ⓘ
Hipparcos Catalogue ⓘ |
| catalogueIdentifier |
HIP 21421
ⓘ
HR 1457 ⓘ |
| hasDesignation |
HIP 21421
ⓘ
HR 1457 ⓘ |
| hasHIPNumber | 21421 ⓘ |
| hasHRNumber | HR 1457 ⓘ |
| isListedIn |
Bright Star Catalogue
ⓘ
Hipparcos Catalogue ⓘ |
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 21421 Description of subject: HIP 21421 is a star listed in the Hipparcos Catalogue, also known by its Bright Star Catalogue designation HR 1457.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.