NGC 2254
E562823
NGC 2254 is an open star cluster located in the constellation Monoceros.
All labels observed (1)
| Label | Occurrences |
|---|---|
| NGC 2254 canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T5775489 — 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: NGC 2254 Context triple: [Monoceros, contains, NGC 2254]
-
A.
NGC 2244
NGC 2244 is a young open star cluster embedded in the Rosette Nebula, located in the constellation Monoceros.
-
B.
NGC 2239
NGC 2239 is an open star cluster located in the constellation Monoceros, often associated with the Rosette Nebula region.
-
C.
NGC 2324
NGC 2324 is an open star cluster located in the constellation Monoceros.
-
D.
NGC 2261
NGC 2261, also known as Hubble's Variable Nebula, is a small, fan-shaped reflection nebula in the constellation Monoceros whose appearance changes over time due to variations in its illuminating star.
-
E.
NGC 2264
NGC 2264 is a prominent star-forming region in the constellation Monoceros that includes the Cone Nebula and the Christmas Tree Cluster.
- 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: NGC 2254 Target entity description: NGC 2254 is an open star cluster located in the constellation Monoceros.
-
A.
NGC 2244
NGC 2244 is a young open star cluster embedded in the Rosette Nebula, located in the constellation Monoceros.
-
B.
NGC 2239
NGC 2239 is an open star cluster located in the constellation Monoceros, often associated with the Rosette Nebula region.
-
C.
NGC 2324
NGC 2324 is an open star cluster located in the constellation Monoceros.
-
D.
NGC 2261
NGC 2261, also known as Hubble's Variable Nebula, is a small, fan-shaped reflection nebula in the constellation Monoceros whose appearance changes over time due to variations in its illuminating star.
-
E.
NGC 2264
NGC 2264 is a prominent star-forming region in the constellation Monoceros that includes the Cone Nebula and the Christmas Tree Cluster.
- F. None of above. chosen
Statements (20)
| Predicate | Object |
|---|---|
| instanceOf | open star cluster ⓘ |
| appearsIn | deep-sky catalogs ⓘ |
| catalog | New General Catalogue ⓘ |
| catalogType | NGC object ⓘ |
| celestialCategory | star cluster ⓘ |
| constellationType |
Monoceros constellation
ⓘ
linked to:
Monoceros
|
| declinationEpochJ2000 | +05° ⓘ |
| discoverer | John Herschel ⓘ |
| galacticLocation | Galactic disk ⓘ |
| hasComponent | stars ⓘ |
| hasDesignation | NGC 2254 ⓘ |
| isInHemisphere | celestial equator region ⓘ |
| locatedIn | Milky Way ⓘ |
| locatedInConstellation | Monoceros ⓘ |
| objectType | open cluster ⓘ |
| observedFrom | Earth ⓘ |
| partOf | Monoceros region of the Milky Way ⓘ |
| rightAscensionEpochJ2000 | 06h 32m ⓘ |
| skyPosition | equatorial coordinate system ⓘ |
| visibleIn | optical wavelengths ⓘ |
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: NGC 2254 Description of subject: NGC 2254 is an open star cluster located in the constellation Monoceros.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.