M66 Group
E561240
The M66 Group is a small nearby galaxy group in the constellation Leo, best known for containing the bright spiral galaxy Messier 66 and its interacting companions.
All labels observed (1)
| Label | Occurrences |
|---|---|
| M66 Group canonical | 3 |
How this entity was disambiguated
This entity first appeared as the object of triple T6016015 — 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: M66 Group Context triple: [Virgo Supercluster, contains, M66 Group]
-
A.
M66
M66 is a motorway in Greater Manchester, England, forming part of the route between Manchester and the M62 near Bury.
-
B.
M81 Group
The M81 Group is a nearby collection of galaxies in the constellation Ursa Major, dominated by the large spiral galaxy Messier 81 and known for its interacting members and active star formation.
-
C.
Eridanus Cluster
The Eridanus Cluster is a prominent galaxy cluster located in the constellation Eridanus, notable for its rich population of galaxies and role in studies of large-scale cosmic structure.
-
D.
Pisces Cluster
The Pisces Cluster is a galaxy cluster located within the Perseus–Pisces Supercluster, notable as part of one of the most prominent large-scale structures in the nearby universe.
-
E.
Stephan's Quintet
Stephan's Quintet is a visually striking compact group of five galaxies in the constellation Pegasus, famous for their complex gravitational interactions and dramatic appearance in astronomical imagery.
- 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: M66 Group Target entity description: The M66 Group is a small nearby galaxy group in the constellation Leo, best known for containing the bright spiral galaxy Messier 66 and its interacting companions.
-
A.
M66
M66 is a motorway in Greater Manchester, England, forming part of the route between Manchester and the M62 near Bury.
-
B.
M81 Group
The M81 Group is a nearby collection of galaxies in the constellation Ursa Major, dominated by the large spiral galaxy Messier 81 and known for its interacting members and active star formation.
-
C.
Eridanus Cluster
The Eridanus Cluster is a prominent galaxy cluster located in the constellation Eridanus, notable for its rich population of galaxies and role in studies of large-scale cosmic structure.
-
D.
Pisces Cluster
The Pisces Cluster is a galaxy cluster located within the Perseus–Pisces Supercluster, notable as part of one of the most prominent large-scale structures in the nearby universe.
-
E.
Stephan's Quintet
Stephan's Quintet is a visually striking compact group of five galaxies in the constellation Pegasus, famous for their complex gravitational interactions and dramatic appearance in astronomical imagery.
- F. None of above. chosen
Statements (31)
| Predicate | Object |
|---|---|
| instanceOf |
astronomical object
ⓘ
galaxy group ⓘ |
| alsoKnownAs | Leo Triplet ⓘ |
| containsGalaxy |
Messier 65
ⓘ
Messier 66 ⓘ NGC 3628 ⓘ |
| distanceFromEarthApprox |
11 megaparsecs
ⓘ
35 million light-years ⓘ |
| hasApproximateMemberCount | 3 main bright galaxies ⓘ |
| hasBrightestMember | Messier 66 ⓘ |
| hasInteractingMembers |
Messier 65
ⓘ
Messier 66 ⓘ NGC 3628 ⓘ |
| hasNotableGalaxy |
Messier 65
ⓘ
Messier 66 ⓘ NGC 3628 ⓘ |
| hasNotableGalaxyType | spiral galaxy ⓘ |
| hasTidalFeatures | yes ⓘ |
| interactionCauses |
distorted spiral arms in Messier 66
ⓘ
warped disk in NGC 3628 ⓘ |
| isBestKnownFor |
containing the bright spiral galaxy Messier 66
ⓘ
strong tidal interactions among its main galaxies ⓘ |
| isNearbyGalaxyGroup | yes ⓘ |
| isNearbyTo | Local Group ⓘ |
| isPartOfSkyRegion | Leo constellation area ⓘ |
| locatedInConstellation | Leo ⓘ |
| memberOfLargerStructure | Virgo Supercluster ⓘ |
| observedInWavelength |
X-ray
ⓘ
optical ⓘ radio ⓘ |
| redshiftApprox | 0.002 ⓘ |
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: M66 Group Description of subject: The M66 Group is a small nearby galaxy group in the constellation Leo, best known for containing the bright spiral galaxy Messier 66 and its interacting companions.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.