GCl 117
E507132
GCl 117 is a dense globular star cluster in the constellation Sagittarius, better known as Messier 75 in the Messier catalog.
All labels observed (1)
| Label | Occurrences |
|---|---|
| GCl 117 canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5240896 — 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: GCl 117 Context triple: [Messier 75, otherName, GCl 117]
-
A.
GCl 111
GCl 111 is a globular star cluster in the constellation Sagittarius, better known as Messier 55 in the Messier catalog of deep-sky objects.
-
B.
GCl 104
GCl 104 is the catalog designation for Messier 70, a dense globular star cluster located in the constellation Sagittarius.
-
C.
GCl 99
GCl 99, also known as Messier 28, is a bright globular star cluster located in the constellation Sagittarius.
-
D.
GCLP
GCLP is the ICAO airport code for Gran Canaria Airport, a major international airport serving the island of Gran Canaria in Spain’s Canary Islands.
-
E.
Gla
Gla is a large fortified Mycenaean archaeological site in Boeotia, Greece, notable for its massive walls and strategic position overlooking the former Lake Kopais.
- 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: GCl 117 Target entity description: GCl 117 is a dense globular star cluster in the constellation Sagittarius, better known as Messier 75 in the Messier catalog.
-
A.
GCl 111
GCl 111 is a globular star cluster in the constellation Sagittarius, better known as Messier 55 in the Messier catalog of deep-sky objects.
-
B.
GCl 104
GCl 104 is the catalog designation for Messier 70, a dense globular star cluster located in the constellation Sagittarius.
-
C.
GCl 99
GCl 99, also known as Messier 28, is a bright globular star cluster located in the constellation Sagittarius.
-
D.
GCLP
GCLP is the ICAO airport code for Gran Canaria Airport, a major international airport serving the island of Gran Canaria in Spain’s Canary Islands.
-
E.
Gla
Gla is a large fortified Mycenaean archaeological site in Boeotia, Greece, notable for its massive walls and strategic position overlooking the former Lake Kopais.
- F. None of above. chosen
Statements (39)
| Predicate | Object |
|---|---|
| instanceOf | globular star cluster ⓘ |
| absoluteMagnitudeV | about −8.5 ⓘ |
| addedToMessierCatalogueBy | Charles Messier NERFINISHED ⓘ |
| age | ~13 billion years ⓘ |
| angularSize | 6.8 arcminutes ⓘ |
| apparentMagnitudeV | 8.6 ⓘ |
| belongsToGalaxy | Milky Way NERFINISHED ⓘ |
| bestViewingHemisphere |
Southern Hemisphere
NERFINISHED
ⓘ
low southern skies from Northern Hemisphere ⓘ |
| bestViewingSeason | summer ⓘ |
| catalogCode | GCl 117 ⓘ |
| concentrationClass | I ⓘ |
| contains | old, metal-poor stars ⓘ |
| declination | −21° 55′ 17″ ⓘ |
| discoveredBy | Pierre Méchain NERFINISHED ⓘ |
| discoveryYear | 1780 ⓘ |
| distanceFromEarth |
~20.7 kiloparsecs
ⓘ
~67,500 light-years ⓘ |
| distanceFromGalacticCenter | ~14.7 kiloparsecs ⓘ |
| galacticLatitude | −25.75° ⓘ |
| galacticLongitude | 12.19° ⓘ |
| hasAlternativeName |
M75
ⓘ
Messier 75 NERFINISHED ⓘ NGC 6864 NERFINISHED ⓘ |
| hasColorIndexBminusV | about 0.76 ⓘ |
| hasMorphology | highly concentrated core ⓘ |
| isCoreCollapsed | true ⓘ |
| isPartOf |
Messier catalogue
NERFINISHED
ⓘ
New General Catalogue NERFINISHED ⓘ |
| locatedIn | Milky Way halo NERFINISHED ⓘ |
| locatedInConstellation | Sagittarius NERFINISHED ⓘ |
| messierNumber | 75 ⓘ |
| metallicityFeH | about −1.3 ⓘ |
| ngcNumber | 6864 ⓘ |
| notes | one of the most centrally concentrated globular clusters known ⓘ |
| radialVelocity | ~−186 km/s ⓘ |
| rightAscension | 20h 06m 04s ⓘ |
| shapleySawyerClass | I ⓘ |
| visibility | best seen with medium to large amateur telescopes ⓘ |
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: GCl 117 Description of subject: GCl 117 is a dense globular star cluster in the constellation Sagittarius, better known as Messier 75 in the Messier catalog.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.