Caldwell 39
E1489545
UNEXPLORED
Caldwell 39 is a bright, compact planetary nebula in the constellation Gemini, notable for its distinctive ring-like appearance and popularity among amateur astronomers.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Caldwell 39 canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T21523205 — 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: Caldwell 39 Context triple: [Eskimo Nebula, hasAlternativeName, Caldwell 39]
-
A.
Caldwell 49
Caldwell 49 is a large, bright emission nebula and star-forming region in the constellation Monoceros, popularly known as the Rosette Nebula.
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B.
Caldwell 46
Caldwell 46 is a faint, dwarf spheroidal galaxy in the constellation Leo, known for being one of the Milky Way’s satellite galaxies.
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C.
Caldwell 57
Caldwell 57 is a dwarf irregular galaxy in the Local Group, better known as Barnard's Galaxy (NGC 6822), located in the constellation Sagittarius.
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D.
Caldwell 51
Caldwell 51 is a spiral galaxy in the constellation Leo Minor that is part of the Caldwell catalog of deep-sky objects popular with amateur astronomers.
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E.
Caldwell 13
Caldwell 13 is a globular star cluster in the constellation Hercules, cataloged in the Caldwell deep-sky list and observed as a dense, spherical collection of ancient stars.
- 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: Caldwell 39 Target entity description: Caldwell 39 is a bright, compact planetary nebula in the constellation Gemini, notable for its distinctive ring-like appearance and popularity among amateur astronomers.
-
A.
Caldwell 49
Caldwell 49 is a large, bright emission nebula and star-forming region in the constellation Monoceros, popularly known as the Rosette Nebula.
-
B.
Caldwell 46
Caldwell 46 is a faint, dwarf spheroidal galaxy in the constellation Leo, known for being one of the Milky Way’s satellite galaxies.
-
C.
Caldwell 57
Caldwell 57 is a dwarf irregular galaxy in the Local Group, better known as Barnard's Galaxy (NGC 6822), located in the constellation Sagittarius.
-
D.
Caldwell 51
Caldwell 51 is a spiral galaxy in the constellation Leo Minor that is part of the Caldwell catalog of deep-sky objects popular with amateur astronomers.
-
E.
Caldwell 13
Caldwell 13 is a globular star cluster in the constellation Hercules, cataloged in the Caldwell deep-sky list and observed as a dense, spherical collection of ancient stars.
- F. None of above. chosen
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.