supernova SN 1940B
E1341731
UNEXPLORED
Supernova SN 1940B is a historical stellar explosion observed in 1940 within the barred spiral galaxy NGC 4725.
All labels observed (1)
| Label | Occurrences |
|---|---|
| supernova SN 1940B canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T18772687 — 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: supernova SN 1940B Context triple: [NGC 4725, hostGalaxyFor, supernova SN 1940B]
-
A.
supernova SN 1954J
Supernova SN 1954J is a mid-20th-century stellar explosion event in an external galaxy that became notable through detailed optical observations and analysis by astronomers.
-
B.
SN 1054
SN 1054 is a historic supernova observed in 1054 CE whose explosion created the Crab Nebula and was recorded by several medieval astronomers.
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C.
SN 1987A
SN 1987A is a famous supernova, the closest observed in modern times, whose 1987 explosion in the Large Magellanic Cloud has provided key insights into stellar death and supernova physics.
-
D.
SN 1572
SN 1572 is a historically significant supernova in the constellation Cassiopeia whose detailed observations by Tycho Brahe helped challenge the Aristotelian view of an unchanging heavens.
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E.
Cassiopeia A
Cassiopeia A is a well-studied, relatively young supernova remnant in the constellation Cassiopeia and one of the strongest radio and X-ray sources in the sky.
- 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: supernova SN 1940B Target entity description: Supernova SN 1940B is a historical stellar explosion observed in 1940 within the barred spiral galaxy NGC 4725.
-
A.
supernova SN 1954J
Supernova SN 1954J is a mid-20th-century stellar explosion event in an external galaxy that became notable through detailed optical observations and analysis by astronomers.
-
B.
SN 1054
SN 1054 is a historic supernova observed in 1054 CE whose explosion created the Crab Nebula and was recorded by several medieval astronomers.
-
C.
SN 1987A
SN 1987A is a famous supernova, the closest observed in modern times, whose 1987 explosion in the Large Magellanic Cloud has provided key insights into stellar death and supernova physics.
-
D.
SN 1572
SN 1572 is a historically significant supernova in the constellation Cassiopeia whose detailed observations by Tycho Brahe helped challenge the Aristotelian view of an unchanging heavens.
-
E.
Cassiopeia A
Cassiopeia A is a well-studied, relatively young supernova remnant in the constellation Cassiopeia and one of the strongest radio and X-ray sources in the sky.
- F. None of above. chosen
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.