M51a
E1404211
UNEXPLORED
M51a is the larger, grand-design spiral galaxy in the Whirlpool Galaxy system, interacting with its smaller companion M51b in the constellation Canes Venatici.
All labels observed (1)
| Label | Occurrences |
|---|---|
| M51a canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T19974181 — 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: M51a Context triple: [Messier 51, alsoKnownAs, M51a]
-
A.
M55
M55 is a New York City bus route that provides public transit service connecting to the Whitehall Terminal area in Lower Manhattan.
-
B.
M55
M55 is a British motorway in Lancashire that links the city of Preston with the seaside resort of Blackpool.
-
C.
M-55
M-55 is a state trunkline highway in Michigan that runs east–west across the northern Lower Peninsula, connecting several communities including the city of Manistee.
-
D.
M-5
M-5 is a state highway in southeastern Michigan that serves as a key commuter route connecting Novi and surrounding suburbs to the Detroit metropolitan area.
-
E.
M-513
M-513 is a regional road in the Community of Madrid, Spain, that connects the town of Brunete with other nearby municipalities and major routes.
- 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: M51a Target entity description: M51a is the larger, grand-design spiral galaxy in the Whirlpool Galaxy system, interacting with its smaller companion M51b in the constellation Canes Venatici.
-
A.
M55
M55 is a New York City bus route that provides public transit service connecting to the Whitehall Terminal area in Lower Manhattan.
-
B.
M55
M55 is a British motorway in Lancashire that links the city of Preston with the seaside resort of Blackpool.
-
C.
M-55
M-55 is a state trunkline highway in Michigan that runs east–west across the northern Lower Peninsula, connecting several communities including the city of Manistee.
-
D.
M-5
M-5 is a state highway in southeastern Michigan that serves as a key commuter route connecting Novi and surrounding suburbs to the Detroit metropolitan area.
-
E.
M-513
M-513 is a regional road in the Community of Madrid, Spain, that connects the town of Brunete with other nearby municipalities and major routes.
- F. None of above. chosen
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.