M89
E517951
M89 is an elliptical galaxy in the constellation Virgo, notable as one of the bright members of the Virgo Cluster.
All labels observed (1)
| Label | Occurrences |
|---|---|
| M89 canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T5410445 — 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: M89 Context triple: [Virgo Cluster, containsGalaxy, M89]
-
A.
M8
M8, better known as the Lagoon Nebula, is a large, bright emission nebula and active star-forming region located in the constellation Sagittarius.
-
B.
M8
M8 is a major motorway in Scotland that connects the cities of Glasgow and Edinburgh.
-
C.
M8
M8 is a postal code district in the Manchester area of England, covering parts of North Manchester.
-
D.
M998
The M998 is a basic cargo and troop carrier version of the U.S. military's High Mobility Multipurpose Wheeled Vehicle (HMMWV) family.
-
E.
M-97
M-97 is a state highway in Michigan that serves as a key transportation route through the Detroit metropolitan area, including Warren.
- 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: M89 Target entity description: M89 is an elliptical galaxy in the constellation Virgo, notable as one of the bright members of the Virgo Cluster.
-
A.
M8
M8, better known as the Lagoon Nebula, is a large, bright emission nebula and active star-forming region located in the constellation Sagittarius.
-
B.
M8
M8 is a major motorway in Scotland that connects the cities of Glasgow and Edinburgh.
-
C.
M8
M8 is a postal code district in the Manchester area of England, covering parts of North Manchester.
-
D.
M998
The M998 is a basic cargo and troop carrier version of the U.S. military's High Mobility Multipurpose Wheeled Vehicle (HMMWV) family.
-
E.
M-97
M-97 is a state highway in Michigan that serves as a key transportation route through the Detroit metropolitan area, including Warren.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
Messier object
ⓘ
elliptical galaxy ⓘ |
| angularSize | 5.1′ × 4.7′ ⓘ |
| apparentMagnitudeV | 9.8 ⓘ |
| belongsTo |
Messier catalogue
ⓘ
New General Catalogue ⓘ |
| bestSeenIn | spring months from northern hemisphere ⓘ |
| catalogCode |
M89
ⓘ
Messier 89 ⓘ NGC 4552 ⓘ PGC 41968 ⓘ UGC 7760 ⓘ |
| clusterEnvironment | rich cluster environment of the Virgo Cluster ⓘ |
| constellation | Virgo ⓘ |
| declination | +12° 33′ 23″ ⓘ |
| discoverer | Charles Messier ⓘ |
| discoveryDate | 1781 ⓘ |
| distanceFromEarth |
about 15 megaparsecs
ⓘ
about 50 million light-years ⓘ |
| epoch | J2000 ⓘ |
| galaxyType | elliptical ⓘ |
| hasAlternateName |
Messier 89
ⓘ
NGC 4552 ⓘ PGC 41968 ⓘ UGC 7760 ⓘ |
| hasColorIndexB−V | about +0.9 ⓘ |
| hasFeature |
dust features near the center
ⓘ
extended outer envelope ⓘ low surface brightness outer regions ⓘ nearly circular appearance ⓘ shells and plumes in outer halo ⓘ |
| hasStellarPopulation | predominantly old stars ⓘ |
| isOneOf |
bright galaxies of the Virgo Cluster
ⓘ
elliptical galaxies in Virgo Cluster ⓘ |
| isTargetFor | amateur astronomers ⓘ |
| locatedIn |
Virgo constellation region of the sky
ⓘ
linked to:
Virgo constellation
|
| locatedInSupercluster | Virgo Supercluster ⓘ |
| memberOf | Virgo Cluster ⓘ |
| morphologicalType | E0 ⓘ |
| observedIn |
X-ray wavelengths
ⓘ
optical wavelengths ⓘ radio wavelengths ⓘ |
| radialVelocity | about 340 km/s ⓘ |
| redshift | 0.0011 ⓘ |
| rightAscension | 12h 35m 39.8s ⓘ |
| surfaceBrightnessProfile | typical of elliptical galaxies ⓘ |
| suspectedToHave |
active galactic nucleus
ⓘ
supermassive black hole at its center ⓘ |
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: M89 Description of subject: M89 is an elliptical galaxy in the constellation Virgo, notable as one of the bright members of the Virgo Cluster.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.