PGC 21396
E1329258
UNEXPLORED
PGC 21396 is a faint dwarf irregular galaxy, also known as DDO 53, located in the constellation Ursa Major.
All labels observed (1)
| Label | Occurrences |
|---|---|
| PGC 21396 canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T18442917 — 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: PGC 21396 Context triple: [DDO 53, otherDesignation, PGC 21396]
-
A.
PGC 21396
PGC 21396 is a spiral galaxy in the constellation Camelopardalis, better known as NGC 2403, notable for its active star formation and membership in the M81 Group.
-
B.
PGC 2121
PGC 2121 is a faint, gas-rich dwarf irregular galaxy located in the outskirts of the Andromeda Galaxy’s local group region.
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C.
PGC 3792
PGC 3792 is a faint, nearby dwarf irregular galaxy in the constellation Pisces that is part of the Local Group.
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D.
PGC 23324
PGC 23324 is a dwarf irregular galaxy in the constellation Ursa Major, better known as Holmberg II and noted for its prominent gas shells and active star-forming regions.
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E.
PGC 61031
PGC 61031 is a faint spheroidal dwarf galaxy in the constellation Draco that is a satellite of the Milky Way and notable for its very low luminosity and dark-matter dominance.
- 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: PGC 21396 Target entity description: PGC 21396 is a faint dwarf irregular galaxy, also known as DDO 53, located in the constellation Ursa Major.
-
A.
PGC 21396
PGC 21396 is a spiral galaxy in the constellation Camelopardalis, better known as NGC 2403, notable for its active star formation and membership in the M81 Group.
-
B.
PGC 2121
PGC 2121 is a faint, gas-rich dwarf irregular galaxy located in the outskirts of the Andromeda Galaxy’s local group region.
-
C.
PGC 3792
PGC 3792 is a faint, nearby dwarf irregular galaxy in the constellation Pisces that is part of the Local Group.
-
D.
PGC 23324
PGC 23324 is a dwarf irregular galaxy in the constellation Ursa Major, better known as Holmberg II and noted for its prominent gas shells and active star-forming regions.
-
E.
PGC 61031
PGC 61031 is a faint spheroidal dwarf galaxy in the constellation Draco that is a satellite of the Milky Way and notable for its very low luminosity and dark-matter dominance.
- F. None of above. chosen
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.