NGC 4654
E526970
NGC 4654 is a spiral galaxy in the constellation Virgo that is a member of the Virgo Cluster and is noted for its asymmetric structure likely caused by gravitational interactions and ram-pressure effects.
All labels observed (1)
| Label | Occurrences |
|---|---|
| NGC 4654 canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5410483 — 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 4654 Context triple: [Virgo Cluster, containsGalaxy, NGC 4654]
-
A.
NGC 4606
NGC 4606 is a barred spiral galaxy located in the constellation Virgo and is a member of the Virgo Cluster of galaxies.
-
B.
NGC 4647
NGC 4647 is a spiral galaxy located in the constellation Virgo, known for its apparent interaction with the nearby giant elliptical galaxy Messier 60 within the Virgo Cluster.
-
C.
NGC 4609
NGC 4609 is an open star cluster located in the southern constellation Centaurus, notable for its relatively young stellar population.
-
D.
NGC 4660
NGC 4660 is an elliptical galaxy located in the constellation Virgo and is a member of the Virgo Cluster of galaxies.
-
E.
NGC 4639
NGC 4639 is a barred spiral galaxy in the constellation Virgo that hosts an active galactic nucleus and lies on the outskirts of the Virgo Cluster.
- 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 4654 Target entity description: NGC 4654 is a spiral galaxy in the constellation Virgo that is a member of the Virgo Cluster and is noted for its asymmetric structure likely caused by gravitational interactions and ram-pressure effects.
-
A.
NGC 4606
NGC 4606 is a barred spiral galaxy located in the constellation Virgo and is a member of the Virgo Cluster of galaxies.
-
B.
NGC 4647
NGC 4647 is a spiral galaxy located in the constellation Virgo, known for its apparent interaction with the nearby giant elliptical galaxy Messier 60 within the Virgo Cluster.
-
C.
NGC 4609
NGC 4609 is an open star cluster located in the southern constellation Centaurus, notable for its relatively young stellar population.
-
D.
NGC 4660
NGC 4660 is an elliptical galaxy located in the constellation Virgo and is a member of the Virgo Cluster of galaxies.
-
E.
NGC 4639
NGC 4639 is a barred spiral galaxy in the constellation Virgo that hosts an active galactic nucleus and lies on the outskirts of the Virgo Cluster.
- F. None of above. chosen
Statements (44)
| Predicate | Object |
|---|---|
| instanceOf |
Virgo Cluster member
ⓘ
spiral galaxy ⓘ |
| apparentMagnitudeV | ≈11.3 ⓘ |
| apparentSize | ≈4.9 × 2.8 arcminutes ⓘ |
| catalog | New General Catalogue ⓘ |
| catalogIdentifier |
PGC 42863
ⓘ
UGC 7901 ⓘ |
| causeOfAsymmetry |
gravitational interactions
ⓘ
ram-pressure effects ⓘ |
| clusterEnvironmentEffect | ram-pressure plus tidal interaction scenario ⓘ |
| constellation | Virgo ⓘ |
| declination | +13° (approx) ⓘ |
| discoveredBy | William Herschel ⓘ |
| discoveryDate | 1784 ⓘ |
| distanceFromEarth |
≈17 Mpc
ⓘ
≈55 million light-years ⓘ |
| environmentalEffect |
ram-pressure stripping
ⓘ
tidal interaction ⓘ |
| galaxyCluster | Virgo Cluster ⓘ |
| galaxyType | late-type spiral galaxy ⓘ |
| gasComponent |
molecular gas
ⓘ
neutral hydrogen (HI) ⓘ |
| hasDisk |
gaseous disk
ⓘ
stellar disk ⓘ |
| hasFeature |
central bar
ⓘ
extended HI gas tail ⓘ star-forming spiral arms ⓘ |
| hasStarFormation | enhanced in outer disk ⓘ |
| hasStructure |
asymmetric spiral arms
ⓘ
lopsided gas distribution ⓘ |
| interactsWith |
NGC 4639
ⓘ
Virgo Cluster intracluster medium ⓘ |
| locatedIn |
Virgo Cluster environment
ⓘ
Virgo constellation region ⓘ
linked to:
Virgo constellation
|
| memberOf | Virgo Cluster ⓘ |
| morphologicalType | SAB(rs)cd ⓘ |
| observedIn |
optical wavelengths
ⓘ
radio wavelengths ⓘ ultraviolet wavelengths ⓘ |
| orientation | moderately inclined to line of sight ⓘ |
| radialVelocity | ≈1100 km/s ⓘ |
| redshift | z≈0.0037 ⓘ |
| rightAscension | 12h 43m (approx) ⓘ |
| showsKinematicAsymmetry | yes ⓘ |
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 4654 Description of subject: NGC 4654 is a spiral galaxy in the constellation Virgo that is a member of the Virgo Cluster and is noted for its asymmetric structure likely caused by gravitational interactions and ram-pressure effects.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.