Coma Cluster
E576473
The Coma Cluster is a massive, nearby galaxy cluster rich in elliptical galaxies and dark matter, located in the constellation Coma Berenices.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Coma Cluster canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T6174867 — 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: Coma Cluster Context triple: [Northern Celestial Hemisphere, contains, Coma Cluster]
-
A.
Ptolemy Cluster
The Ptolemy Cluster is a bright open star cluster in the constellation Scorpius, easily visible to the naked eye and popular with amateur astronomers.
-
B.
Virgo Cluster
The Virgo Cluster is a massive, nearby galaxy cluster that serves as the central, dominant concentration of galaxies in our local region of the universe.
-
C.
Perseus Cluster
The Perseus Cluster is a massive, nearby galaxy cluster dominated by the bright galaxy NGC 1275 and known for its hot X-ray–emitting gas and powerful radio and acoustic phenomena in its intracluster medium.
-
D.
Fornax Cluster
The Fornax Cluster is a relatively nearby, rich cluster of galaxies dominated by early-type galaxies and centered on the giant elliptical NGC 1399 in the constellation Fornax.
-
E.
Centaurus Cluster
The Centaurus Cluster is a massive, nearby galaxy cluster in the constellation Centaurus, notable for its rich population of galaxies and role as a major mass concentration within the local universe.
- 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: Coma Cluster Target entity description: The Coma Cluster is a massive, nearby galaxy cluster rich in elliptical galaxies and dark matter, located in the constellation Coma Berenices.
-
A.
Ptolemy Cluster
The Ptolemy Cluster is a bright open star cluster in the constellation Scorpius, easily visible to the naked eye and popular with amateur astronomers.
-
B.
Virgo Cluster
The Virgo Cluster is a massive, nearby galaxy cluster that serves as the central, dominant concentration of galaxies in our local region of the universe.
-
C.
Perseus Cluster
The Perseus Cluster is a massive, nearby galaxy cluster dominated by the bright galaxy NGC 1275 and known for its hot X-ray–emitting gas and powerful radio and acoustic phenomena in its intracluster medium.
-
D.
Fornax Cluster
The Fornax Cluster is a relatively nearby, rich cluster of galaxies dominated by early-type galaxies and centered on the giant elliptical NGC 1399 in the constellation Fornax.
-
E.
Centaurus Cluster
The Centaurus Cluster is a massive, nearby galaxy cluster in the constellation Centaurus, notable for its rich population of galaxies and role as a major mass concentration within the local universe.
- F. None of above. chosen
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
Abell cluster
ⓘ
galaxy cluster ⓘ rich cluster of galaxies ⓘ |
| alsoKnownAs | Abell 1656 ⓘ |
| cataloguedIn |
Abell catalogue of rich clusters
ⓘ
linked to:
Abell catalog of rich clusters of galaxies
|
| contains |
IC 4051
ⓘ
NGC 4874 ⓘ NGC 4889 ⓘ hot intracluster gas ⓘ radio halo ⓘ radio relics ⓘ thousands of member galaxies ⓘ |
| containsLargeAmountOf | dark matter ⓘ |
| discoveredBy |
Frederick William Herschel
ⓘ
linked to:
William Herschel
|
| discoveryCentury | 18th century ⓘ |
| distanceFromEarth |
about 100 megaparsecs
ⓘ
about 320 million light-years ⓘ |
| environmentType | dense cluster core ⓘ |
| hasApproximateMass | about 10^15 solar masses ⓘ |
| hasCentralGalaxy |
cD galaxy NGC 4874
ⓘ
linked to:
NGC 4874
giant elliptical NGC 4889 ⓘ
linked to:
NGC 4889
|
| hasColorMagnitudeRelation | prominent red sequence of galaxies ⓘ |
| hasDeclination | +27° 58′ ⓘ |
| hasDynamicalState | partially relaxed ⓘ |
| hasEvidenceFor | non-thermal radio emission ⓘ |
| hasFew | spiral galaxies ⓘ |
| hasGalaxyDensity | very high in central region ⓘ |
| hasGalaxyPopulation | dominated by early-type galaxies ⓘ |
| hasGravitationalLensing | yes ⓘ |
| hasIntraclusterMedium | X-ray emitting plasma ⓘ |
| hasLuminosityFunction | well-studied ⓘ |
| hasMeanGalaxyMagnitude | about 13–15 in V band ⓘ |
| hasMorphology | roughly spherical ⓘ |
| hasOngoing | cluster mergers ⓘ |
| hasRightAscension | about 12h 59m ⓘ |
| hasSubstructure | multiple galaxy subgroups ⓘ |
| hasVelocityDispersion | about 1000 km/s ⓘ |
| hasXRayEmission | yes ⓘ |
| intraclusterGasTemperature | about 8 keV ⓘ |
| isOneOf |
most studied galaxy clusters
ⓘ
nearest rich clusters of galaxies ⓘ |
| locatedInConstellation | Coma Berenices ⓘ |
| memberOf | Coma Supercluster ⓘ |
| redshift | 0.023 ⓘ |
| richIn |
elliptical galaxies
ⓘ
lenticular galaxies ⓘ |
| usedAs |
laboratory for galaxy evolution studies
ⓘ
probe of dark matter distribution ⓘ |
| usedToTest |
cosmological models
ⓘ
mass-to-light ratios in clusters ⓘ |
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: Coma Cluster Description of subject: The Coma Cluster is a massive, nearby galaxy cluster rich in elliptical galaxies and dark matter, located in the constellation Coma Berenices.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.