NGC 7099
E869023
NGC 7099 is a dense globular star cluster in the constellation Capricornus, notable for its age, brightness, and rich population of ancient stars.
All labels observed (1)
| Label | Occurrences |
|---|---|
| NGC 7099 canonical | 3 |
How this entity was disambiguated
This entity first appeared as the object of triple T10489125 — 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 7099 Context triple: [Messier 30, alsoKnownAs, NGC 7099]
-
A.
NGC 7000
NGC 7000 is a large emission nebula in the constellation Cygnus whose shape strikingly resembles the continent of North America.
-
B.
NGC 7319
NGC 7319 is a barred spiral galaxy in the constellation Pegasus, notable as a member of the interacting galaxy group known as Stephan's Quintet.
-
C.
NGC 7009
NGC 7009, also known as the Saturn Nebula, is a bright planetary nebula notable for its ringed, Saturn-like appearance in the constellation Aquarius.
-
D.
NGC 7320
NGC 7320 is a foreground spiral galaxy in the constellation Pegasus that appears as part of Stephan’s Quintet but is actually much closer to Earth than the other members.
-
E.
NGC 6923
NGC 6923 is a spiral galaxy located in the constellation Microscopium.
- 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 7099 Target entity description: NGC 7099 is a dense globular star cluster in the constellation Capricornus, notable for its age, brightness, and rich population of ancient stars.
-
A.
NGC 7000
NGC 7000 is a large emission nebula in the constellation Cygnus whose shape strikingly resembles the continent of North America.
-
B.
NGC 7319
NGC 7319 is a barred spiral galaxy in the constellation Pegasus, notable as a member of the interacting galaxy group known as Stephan's Quintet.
-
C.
NGC 7009
NGC 7009, also known as the Saturn Nebula, is a bright planetary nebula notable for its ringed, Saturn-like appearance in the constellation Aquarius.
-
D.
NGC 7320
NGC 7320 is a foreground spiral galaxy in the constellation Pegasus that appears as part of Stephan’s Quintet but is actually much closer to Earth than the other members.
-
E.
NGC 6923
NGC 6923 is a spiral galaxy located in the constellation Microscopium.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf | globular cluster ⓘ |
| absoluteMagnitudeV | about −8.3 ⓘ |
| age | about 12.9 billion years ⓘ |
| alsoKnownAs |
M30
ⓘ
Messier 30 ⓘ |
| angularSize | 12 arcminutes ⓘ |
| apparentMagnitudeV | 7.2 ⓘ |
| appearsAs | bright compact globular cluster ⓘ |
| belongsTo | outer halo globular cluster system of the Milky Way ⓘ |
| bestObservedFrom | Southern Hemisphere ⓘ |
| bestObservedIn |
August
ⓘ
September ⓘ |
| catalog |
Messier catalogue
ⓘ
New General Catalogue ⓘ |
| constellation | Capricornus ⓘ |
| contains |
RR Lyrae variables
ⓘ
linked to:
RR Lyrae variable stars
blue straggler stars ⓘ horizontal branch stars ⓘ red giant branch stars ⓘ variable stars ⓘ |
| coreCollapseStatus | core-collapsed ⓘ |
| coreConcentration | high ⓘ |
| declination | −23° 10′ 47″ ⓘ |
| discoveredBy | Charles Messier ⓘ |
| discoveryDate | 1764 ⓘ |
| distanceFromEarth |
about 27,000 light-years
ⓘ
about 8.3 kiloparsecs ⓘ |
| galacticLatitude | −23.18 degrees ⓘ |
| galacticLongitude | 27.18 degrees ⓘ |
| galacticPopulation | Population II stars ⓘ |
| hasColorIndexBminusV | about 0.71 ⓘ |
| locatedIn |
Galactic halo
ⓘ
Milky Way ⓘ |
| mass | on the order of 10^5 solar masses ⓘ |
| metallicity | low ⓘ |
| metallicityFeH | about −2.3 ⓘ |
| morphologicalType | concentrated globular cluster ⓘ |
| notableFor |
ancient stellar population
ⓘ
dense core ⓘ low metallicity ⓘ |
| observedBy |
Gaia spacecraft
ⓘ
linked to:
Gaia observatory
Hubble Space Telescope ⓘ |
| partOf | Local Group ⓘ |
| radialVelocity | about −181 km/s ⓘ |
| rightAscension | 21h 40m 22s ⓘ |
| skyLocation | near the star Zeta Capricorni ⓘ |
| surfaceBrightness | high ⓘ |
| visibleWith | small telescope ⓘ |
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 7099 Description of subject: NGC 7099 is a dense globular star cluster in the constellation Capricornus, notable for its age, brightness, and rich population of ancient stars.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.