NGC 6681
E526108
NGC 6681 is a compact globular star cluster located in the constellation Sagittarius, notable for its richness and proximity to the Galactic center.
All labels observed (2)
How this entity was disambiguated
This entity first appeared as the object of triple T5219600 — 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 6681 Context triple: [Messier 70, catalogCode, NGC 6681]
-
A.
NGC 6611
NGC 6611 is a young, massive open star cluster embedded within the Eagle Nebula, notable for illuminating and shaping its surrounding interstellar gas and dust.
-
B.
NGC 6664
NGC 6664 is an open star cluster located in the constellation Scutum, notable for its grouping of young stars within the Milky Way.
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C.
NGC 6626
NGC 6626 is a bright globular star cluster in the constellation Sagittarius, notable for its dense concentration of ancient stars and its inclusion in Charles Messier’s catalog as Messier 28.
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D.
NGC 6656
NGC 6656 is a bright globular star cluster in the constellation Sagittarius, notable as one of the closest and most easily observed globular clusters from Earth.
-
E.
NGC 6637
NGC 6637 is a dense globular star cluster located in the constellation Sagittarius, notable for its high metallicity and inclusion in Charles Messier’s catalog as Messier 69.
- 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 6681 Target entity description: NGC 6681 is a compact globular star cluster located in the constellation Sagittarius, notable for its richness and proximity to the Galactic center.
-
A.
NGC 6611
NGC 6611 is a young, massive open star cluster embedded within the Eagle Nebula, notable for illuminating and shaping its surrounding interstellar gas and dust.
-
B.
NGC 6664
NGC 6664 is an open star cluster located in the constellation Scutum, notable for its grouping of young stars within the Milky Way.
-
C.
NGC 6626
NGC 6626 is a bright globular star cluster in the constellation Sagittarius, notable for its dense concentration of ancient stars and its inclusion in Charles Messier’s catalog as Messier 28.
-
D.
NGC 6656
NGC 6656 is a bright globular star cluster in the constellation Sagittarius, notable as one of the closest and most easily observed globular clusters from Earth.
-
E.
NGC 6637
NGC 6637 is a dense globular star cluster located in the constellation Sagittarius, notable for its high metallicity and inclusion in Charles Messier’s catalog as Messier 69.
- F. None of above. chosen
Statements (44)
| Predicate | Object |
|---|---|
| instanceOf | globular cluster ⓘ |
| age | on the order of 10–13 billion years ⓘ |
| angularSize | ~11 arcminutes ⓘ |
| apparentMagnitudeV | 7.2 ⓘ |
| bestViewingSeason |
northern summer
ⓘ
southern winter ⓘ |
| catalog | New General Catalogue ⓘ |
| clusterType | globular ⓘ |
| constellation | Sagittarius ⓘ |
| coreConcentration | high ⓘ |
| declination | −32° 17′ 31″ ⓘ |
| discoveredBy | James Dunlop ⓘ |
| discoveryMethod | telescopic observation ⓘ |
| discoveryYear | 1826 ⓘ |
| distanceFromEarth |
~10,000 parsecs
ⓘ
~32,600 light-years ⓘ |
| equatorialCoordinateSystem | J2000 ⓘ |
| galacticComponent | inner halo or bulge ⓘ |
| galacticLatitude | low ⓘ |
| galacticSystem | Milky Way globular cluster system ⓘ |
| hasColorMagnitudeDiagram | well-studied ⓘ |
| hasMemberStars | hundreds of thousands of stars ⓘ |
| hostGalaxy | Milky Way ⓘ |
| locatedIn |
Galactic bulge
ⓘ
linked to:
Milky Way center
Milky Way ⓘ |
| mass | on the order of 10^5 solar masses ⓘ |
| metallicity | metal-poor ⓘ |
| metallicity[Fe/H] | about −1.6 ⓘ |
| near | Galactic center ⓘ |
| notableFor |
proximity to Galactic center
ⓘ
richness ⓘ |
| observedIn |
infrared wavelengths
ⓘ
optical wavelengths ⓘ |
| otherName | M70-like cluster ⓘ |
| rightAscension | 18h 43m 12.7s ⓘ |
| shows |
horizontal branch
ⓘ
main sequence ⓘ red giant branch ⓘ |
| stellarPopulation | old ⓘ |
| structure | compact ⓘ |
| subjectOf |
Hubble Space Telescope observations
ⓘ
dynamical evolution studies ⓘ proper motion studies ⓘ |
| visibility | best seen from 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: NGC 6681 Description of subject: NGC 6681 is a compact globular star cluster located in the constellation Sagittarius, notable for its richness and proximity to the Galactic center.
Referenced by (6)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: NGC 6681