M84
E519109
M84 is a massive lenticular galaxy in the constellation Virgo, notable as one of the bright members of the Virgo Cluster and a target in the Messier catalog.
All labels observed (1)
| Label | Occurrences |
|---|---|
| M84 canonical | 5 |
How this entity was disambiguated
This entity first appeared as the object of triple T5410440 — 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: M84 Context triple: [Virgo Cluster, containsGalaxy, M84]
-
A.
M86
M86 is a giant elliptical galaxy in the constellation Virgo and one of the prominent members of the Virgo Cluster.
-
B.
M51 Isherman
The M51 Isherman is an Israeli-upgraded version of the Sherman tank, fitted with a powerful 105 mm gun and modernized systems for improved performance in mid-20th-century conflicts.
-
C.
M41
M41 is an open star cluster in the constellation Canis Major, visible to the naked eye and notable for its bright, scattered stars.
-
D.
M-24
M-24 is a state highway in Michigan that serves as a key north–south transportation route through communities such as Orion Township.
-
E.
M-45
M-45 is a major ring road in the Madrid metropolitan area that helps divert traffic around the city and connect several eastern suburbs.
- 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: M84 Target entity description: M84 is a massive lenticular galaxy in the constellation Virgo, notable as one of the bright members of the Virgo Cluster and a target in the Messier catalog.
-
A.
M86
M86 is a giant elliptical galaxy in the constellation Virgo and one of the prominent members of the Virgo Cluster.
-
B.
M51 Isherman
The M51 Isherman is an Israeli-upgraded version of the Sherman tank, fitted with a powerful 105 mm gun and modernized systems for improved performance in mid-20th-century conflicts.
-
C.
M41
M41 is an open star cluster in the constellation Canis Major, visible to the naked eye and notable for its bright, scattered stars.
-
D.
M-24
M-24 is a state highway in Michigan that serves as a key north–south transportation route through communities such as Orion Township.
-
E.
M-45
M-45 is a major ring road in the Madrid metropolitan area that helps divert traffic around the city and connect several eastern suburbs.
- F. None of above. chosen
Statements (45)
| Predicate | Object |
|---|---|
| instanceOf |
Messier object
ⓘ
Virgo Cluster member ⓘ lenticular galaxy ⓘ |
| angularSize | 5.0′ × 4.1′ ⓘ |
| apparentMagnitudeV | 9.1 ⓘ |
| bestSeenIn | spring ⓘ |
| catalogDesignation |
M84
ⓘ
Messier 84 ⓘ NGC 4374 ⓘ PGC 40455 ⓘ UGC 7494 ⓘ |
| constellation | Virgo ⓘ |
| declination | +12° 53′ 13″ ⓘ |
| discoverer | Charles Messier ⓘ |
| discoveryDate | 1781 ⓘ |
| distanceFromEarth |
about 18.5 megaparsecs
ⓘ
about 60 million light-years ⓘ |
| dustContent | low ⓘ |
| epoch | J2000 ⓘ |
| galacticEnvironment | cluster core region ⓘ |
| galaxyClusterMembership | Virgo Cluster ⓘ |
| galaxyType | early-type galaxy ⓘ |
| gasContent | low in cold gas ⓘ |
| hasActiveGalacticNucleus | low-luminosity AGN ⓘ |
| hasJet | yes ⓘ |
| hasSupermassiveBlackHole | yes ⓘ |
| hostGalaxyFor | radio source 3C 272.1 ⓘ |
| hostTo | old stellar population ⓘ |
| jetOrigin | central supermassive black hole ⓘ |
| locatedInCluster | Virgo Cluster ⓘ |
| locatedInSupercluster | Virgo Supercluster ⓘ |
| morphologicalType | S0 ⓘ |
| notableFor |
bright member of the Virgo Cluster
ⓘ
target in the Messier catalog ⓘ |
| observedIn |
X-ray wavelengths
ⓘ
optical wavelengths ⓘ radio wavelengths ⓘ |
| partOf |
Markarian’s Chain region of Virgo Cluster
ⓘ
linked to:
Markarian’s Chain
|
| radialVelocity | 1060 km/s ⓘ |
| redshift | 0.00354 ⓘ |
| rightAscension | 12h 25m 03.7s ⓘ |
| starFormationRate | low ⓘ |
| supermassiveBlackHoleMass | about 1.5 billion solar masses ⓘ |
| surfaceBrightnessProfile | typical of lenticular galaxies ⓘ |
| visibleIn | small 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: M84 Description of subject: M84 is a massive lenticular galaxy in the constellation Virgo, notable as one of the bright members of the Virgo Cluster and a target in the Messier catalog.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.