BD+30 549
E459042
BD+30 549 is a hot, massive young star located in the Perseus constellation as part of the Perseus OB2 stellar association.
All labels observed (3)
| Label | Occurrences |
|---|---|
| BD+30 549 canonical | 1 |
| BD+30 549A | 1 |
| BD+30 549B | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4617656 — 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: BD+30 549 Context triple: [Perseus OB2 association, hasMember, BD+30 549]
-
A.
BD+
BD+ is an additional digital rights management and content protection system used on Blu-ray Discs to prevent unauthorized copying and tampering.
-
B.
BdM
BdM is the central bank of Mexico, responsible for maintaining the country’s monetary stability and issuing its currency.
-
C.
BDA
BDA is the IATA airport code for L.F. Wade International Airport, the main international gateway to Bermuda.
-
D.
BDA
BDA is the common abbreviation for Blu-ray Disc, a high-definition optical disc format used for storing and playing back movies, games, and other digital media.
-
E.
BDU
BDU is a military uniform type commonly associated with the standard camouflage combat attire used by the U.S. armed forces from the early 1980s through the mid-2000s.
- 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: BD+30 549 Target entity description: BD+30 549 is a hot, massive young star located in the Perseus constellation as part of the Perseus OB2 stellar association.
-
A.
BD+
BD+ is an additional digital rights management and content protection system used on Blu-ray Discs to prevent unauthorized copying and tampering.
-
B.
BdM
BdM is the central bank of Mexico, responsible for maintaining the country’s monetary stability and issuing its currency.
-
C.
BDA
BDA is the IATA airport code for L.F. Wade International Airport, the main international gateway to Bermuda.
-
D.
BDA
BDA is the common abbreviation for Blu-ray Disc, a high-definition optical disc format used for storing and playing back movies, games, and other digital media.
-
E.
BDU
BDU is a military uniform type commonly associated with the standard camouflage combat attire used by the U.S. armed forces from the early 1980s through the mid-2000s.
- F. None of above. chosen
Statements (15)
| Predicate | Object |
|---|---|
| instanceOf |
hot star
ⓘ
massive star ⓘ star ⓘ young star ⓘ |
| age | young stellar object (relative to Sun) ⓘ |
| associatedWith | massive star formation in Perseus OB2 ⓘ |
| catalog | Bonner Durchmusterung ⓘ |
| constellation | Perseus ⓘ |
| hasStellarEnvironment | star-forming region in Perseus ⓘ |
| locatedIn |
Milky Way
ⓘ
Perseus OB2 stellar association ⓘ
linked to:
Perseus OB2 association
|
| memberOf |
OB association
ⓘ
Perseus OB2 ⓘ
linked to:
Perseus OB2 association
|
| population | Population I star ⓘ |
| spectralType | OB-type (approximate) ⓘ |
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: BD+30 549 Description of subject: BD+30 549 is a hot, massive young star located in the Perseus constellation as part of the Perseus OB2 stellar association.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: BD+30 549
linked to: BD+30 549