M30
E867066
M30 is a globular star cluster in the constellation Capricornus, notable for its dense core and great age.
All labels observed (1)
| Label | Occurrences |
|---|---|
| M30 canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T10489124 — 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: M30 Context triple: [Messier 30, alsoKnownAs, M30]
-
A.
M35
M35 is a bright open star cluster located in the constellation Gemini, visible with binoculars or small telescopes.
-
B.
M32
M32 is a compact dwarf elliptical galaxy that orbits the Andromeda Galaxy within the Local Group.
-
C.
M3
M3 is a boat line that operates as part of Geneva’s public transport network, providing passenger service across the city’s lake or waterways.
-
D.
M3
M3 is a circular line of the Copenhagen Metro that loops around the city center, connecting key districts and interchange stations.
-
E.
M3
M3 is a major motorway in the United Kingdom that connects London to Southampton, serving as a key route through southern England.
- 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: M30 Target entity description: M30 is a globular star cluster in the constellation Capricornus, notable for its dense core and great age.
-
A.
M35
M35 is a bright open star cluster located in the constellation Gemini, visible with binoculars or small telescopes.
-
B.
M32
M32 is a compact dwarf elliptical galaxy that orbits the Andromeda Galaxy within the Local Group.
-
C.
M3
M3 is a major motorway in the United Kingdom that connects London to Southampton, serving as a key route through southern England.
-
D.
M3
M3 is a boat line that operates as part of Geneva’s public transport network, providing passenger service across the city’s lake or waterways.
-
E.
M3
M3 is a circular line of the Copenhagen Metro that loops around the city center, connecting key districts and interchange stations.
- F. None of above. chosen
Statements (45)
| Predicate | Object |
|---|---|
| instanceOf | globular star cluster ⓘ |
| absoluteMagnitudeV | about −8.3 ⓘ |
| age | about 12.9 billion years ⓘ |
| alsoKnownAs |
Messier 30
NERFINISHED
ⓘ
NGC 7099 NERFINISHED ⓘ |
| angularSize | 11.0 arcminutes ⓘ |
| apparentMagnitudeV | 7.2 ⓘ |
| belongsTo |
Local Group
NERFINISHED
ⓘ
Milky Way globular cluster system ⓘ |
| bestSeenFromHemisphere | Southern Hemisphere NERFINISHED ⓘ |
| bestSeenInMonth | August ⓘ |
| catalog |
Messier catalogue
NERFINISHED
ⓘ
New General Catalogue NERFINISHED ⓘ |
| catalogNumber |
M30
ⓘ
NGC 7099 NERFINISHED ⓘ |
| contains |
blue straggler stars
ⓘ
old stars ⓘ variable stars ⓘ |
| coreCollapseStatus | core-collapsed ⓘ |
| coreConcentration | high ⓘ |
| declination | −23° 10′ 47″ ⓘ |
| discoveredBy | Charles Messier NERFINISHED ⓘ |
| discovererNationality | French ⓘ |
| discoveryDate | 1764 ⓘ |
| distanceFromEarth |
about 27,000 light-years
ⓘ
about 8.3 kiloparsecs ⓘ |
| galacticLatitude | −46.84° ⓘ |
| galacticLongitude | 27.18° ⓘ |
| galacticPopulation | Population II NERFINISHED ⓘ |
| hasColorIndexBminusV | about 0.71 ⓘ |
| hasCore | dense core ⓘ |
| hasHalfLightRadius | about 1.0 arcminutes ⓘ |
| hasShape | roughly spherical ⓘ |
| hasTidalRadius | about 18.3 arcminutes ⓘ |
| locatedIn |
Galactic halo
NERFINISHED
ⓘ
Milky Way ⓘ |
| locatedInConstellation | Capricornus NERFINISHED ⓘ |
| metallicityFeH | about −2.3 ⓘ |
| observedWith | amateur telescopes ⓘ |
| resolvableInTelescope | yes ⓘ |
| rightAscension | 21h 40m 22s ⓘ |
| spectralTypeDominant | G-type giants ⓘ |
| surfaceBrightness | high for a globular cluster ⓘ |
| visibilityInBinoculars | visible as fuzzy patch ⓘ |
| visibilityToNakedEye | not visible to naked eye ⓘ |
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: M30 Description of subject: M30 is a globular star cluster in the constellation Capricornus, notable for its dense core and great age.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.