NGC2547
E1031876
NGC 2547 is a young open star cluster located in the constellation Vela, notable for its bright, hot stars and relatively close distance to Earth.
All labels observed (2)
How this entity was disambiguated
This entity first appeared as the object of triple T12315930 — 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: NGC2547 Context triple: [Vela, contains, NGC2547]
-
A.
NGC 2345
NGC 2345 is an open star cluster located in the constellation Monoceros, notable for its young, massive stars and rich stellar population.
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B.
NGC 2343
NGC 2343 is an open star cluster located in the constellation Monoceros.
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C.
NGC 2251
NGC 2251 is an open star cluster located in the constellation Monoceros, observed as a loose grouping of stars within the Milky Way.
-
D.
NGC 2024
NGC 2024, also known as the Flame Nebula, is a bright emission nebula and active star-forming region located in the constellation Orion near the Horsehead Nebula.
-
E.
NGC 2207
NGC 2207 is a large spiral galaxy in the constellation Canis Major, notable for its dramatic gravitational interaction and ongoing collision with the nearby galaxy IC 2163.
- 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: NGC2547 Target entity description: NGC 2547 is a young open star cluster located in the constellation Vela, notable for its bright, hot stars and relatively close distance to Earth.
-
A.
NGC 2345
NGC 2345 is an open star cluster located in the constellation Monoceros, notable for its young, massive stars and rich stellar population.
-
B.
NGC 2343
NGC 2343 is an open star cluster located in the constellation Monoceros.
-
C.
NGC 2251
NGC 2251 is an open star cluster located in the constellation Monoceros, observed as a loose grouping of stars within the Milky Way.
-
D.
NGC 2024
NGC 2024, also known as the Flame Nebula, is a bright emission nebula and active star-forming region located in the constellation Orion near the Horsehead Nebula.
-
E.
NGC 2207
NGC 2207 is a large spiral galaxy in the constellation Canis Major, notable for its dramatic gravitational interaction and ongoing collision with the nearby galaxy IC 2163.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
open star cluster
ⓘ
young stellar cluster ⓘ |
| age | about 30 million years ⓘ |
| ageRange | 20–40 million years ⓘ |
| angularSize | about 20 arcminutes ⓘ |
| apparentMagnitudeV | 4.7 ⓘ |
| bestSeenIn | spring months in Southern Hemisphere ⓘ |
| catalog | New General Catalogue ⓘ |
| catalogCode |
NGC 2547
ⓘ
linked to:
NGC2547
|
| contains |
A-type stars
ⓘ
B-type stars ⓘ F-type stars ⓘ G-type stars ⓘ K-type stars ⓘ M-type stars ⓘ bright hot stars ⓘ low-mass stars ⓘ pre-main-sequence stars ⓘ solar-type stars ⓘ |
| declination | −49° 12′ ⓘ |
| discoveredBy |
Nicolas-Louis de Lacaille
ⓘ
linked to:
Nicolas de Lacaille
|
| discoveryYear | 1751 ⓘ |
| distanceFromEarth |
about 1200 light-years
ⓘ
about 370 parsecs ⓘ |
| galacticLatitude | about −8 degrees ⓘ |
| galacticLongitude | about 264 degrees ⓘ |
| hasAlternativeName |
Collinder 173
ⓘ
Lacaille I.7 ⓘ |
| hasCoreRadius | a few arcminutes ⓘ |
| hasMass | a few hundred solar masses ⓘ |
| hasProperty |
low extinction
ⓘ
low interstellar reddening ⓘ nearby open cluster ⓘ rich in X-ray active stars ⓘ used to study lithium depletion in stars ⓘ used to study stellar activity ⓘ used to study stellar rotation ⓘ |
| locatedIn |
Galactic disk
ⓘ
Milky Way ⓘ |
| locatedInConstellation | Vela ⓘ |
| memberOf | local spiral arm ⓘ |
| observedWith |
binoculars
ⓘ
small telescopes ⓘ |
| rightAscension | 08h 10m ⓘ |
| usedAs |
benchmark cluster for young stellar evolution
ⓘ
benchmark for rotation–activity–age relations ⓘ |
| visibleIn | Southern Hemisphere ⓘ |
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: NGC2547 Description of subject: NGC 2547 is a young open star cluster located in the constellation Vela, notable for its bright, hot stars and relatively close distance to Earth.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject linked to:
Vela constellation