NGC 6809
E525476
NGC 6809 is a bright, relatively nearby globular star cluster in the constellation Sagittarius, notable for its loose structure and rich population of ancient stars.
All labels observed (1)
| Label | Occurrences |
|---|---|
| NGC 6809 canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5075148 — 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 6809 Context triple: [Messier 55, otherName, NGC 6809]
-
A.
NGC 6705
NGC 6705 is a rich, compact open star cluster in the constellation Scutum, notable for its high stellar density and brightness, making it one of the most impressive open clusters in the Milky Way.
-
B.
NGC 6868
NGC 6868 is an elliptical galaxy located in the southern constellation Telescopium, notable for its membership in a small galaxy group and its relatively bright, smooth stellar profile.
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C.
NGC 6845
NGC 6845 is a compact group of interacting galaxies located in the southern constellation Telescopium.
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D.
NGC 6604
NGC 6604 is a young, compact open star cluster associated with the Serpens OB2 association, located near the Eagle Nebula in the constellation Serpens.
-
E.
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.
- 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 6809 Target entity description: NGC 6809 is a bright, relatively nearby globular star cluster in the constellation Sagittarius, notable for its loose structure and rich population of ancient stars.
-
A.
NGC 6705
NGC 6705 is a rich, compact open star cluster in the constellation Scutum, notable for its high stellar density and brightness, making it one of the most impressive open clusters in the Milky Way.
-
B.
NGC 6868
NGC 6868 is an elliptical galaxy located in the southern constellation Telescopium, notable for its membership in a small galaxy group and its relatively bright, smooth stellar profile.
-
C.
NGC 6845
NGC 6845 is a compact group of interacting galaxies located in the southern constellation Telescopium.
-
D.
NGC 6604
NGC 6604 is a young, compact open star cluster associated with the Serpens OB2 association, located near the Eagle Nebula in the constellation Serpens.
-
E.
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.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf | globular star cluster ⓘ |
| absoluteMagnitudeV | about −7.6 ⓘ |
| age | about 12.5 billion years ⓘ |
| alsoKnownAs |
M55
NERFINISHED
ⓘ
Messier 55 NERFINISHED ⓘ |
| angularSize | 19 arcminutes ⓘ |
| apparentMagnitudeV | 6.3 ⓘ |
| belongsTo | Local Group NERFINISHED ⓘ |
| bestSeenFrom | Southern Hemisphere NERFINISHED ⓘ |
| bestViewingSeason | northern summer ⓘ |
| catalog | New General Catalogue NERFINISHED ⓘ |
| contains |
RR Lyrae variable stars
NERFINISHED
ⓘ
blue horizontal branch stars ⓘ red giant branch stars ⓘ |
| coreConcentration | low ⓘ |
| declination | −30° 58′ ⓘ |
| discoveredBy | Nicolas-Louis de Lacaille NERFINISHED ⓘ |
| discoveryYear | 1752 ⓘ |
| distanceFromEarth |
about 17,600 light-years
ⓘ
about 5.4 kiloparsecs ⓘ |
| galacticLatitude | −23.3 degrees ⓘ |
| galacticLongitude | 9.0 degrees ⓘ |
| galacticSystem | Sagittarius region of the Milky Way ⓘ |
| halfLightRadius | about 9 parsecs ⓘ |
| hasColorIndexBminusV | about 0.78 ⓘ |
| horizontalBranchMorphology | blue ⓘ |
| includedInCatalogue | Messier catalogue NERFINISHED ⓘ |
| locatedIn |
Milky Way
ⓘ
Milky Way halo NERFINISHED ⓘ |
| locatedInConstellation | Sagittarius NERFINISHED ⓘ |
| messierCatalogueNumber | 55 ⓘ |
| messierNumber | M55 NERFINISHED ⓘ |
| metallicityFeH | about −1.9 ⓘ |
| notableFor |
loose structure
ⓘ
rich population of ancient stars ⓘ |
| observationalType | non-core-collapsed globular cluster ⓘ |
| observedFrom | Cape of Good Hope NERFINISHED ⓘ |
| orbitalComponent | outer halo of the Milky Way ⓘ |
| rightAscension | 19h 40m ⓘ |
| spectralTypeDominant | G and K giants ⓘ |
| stellarPopulation |
Population II stars
ⓘ
old stars ⓘ |
| structuralConcentrationClass | XI ⓘ |
| structure | loose ⓘ |
| surfaceBrightness | low ⓘ |
| visibility | visible in binoculars under dark skies ⓘ |
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 6809 Description of subject: NGC 6809 is a bright, relatively nearby globular star cluster in the constellation Sagittarius, notable for its loose structure and rich population of ancient stars.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.