Andromeda XXI (dwarf spheroidal galaxy)
E1346490
UNEXPLORED
Andromeda XXI is a faint dwarf spheroidal galaxy located in the Local Group and gravitationally bound as a satellite of the Andromeda Galaxy (M31).
All labels observed (1)
| Label | Occurrences |
|---|---|
| Andromeda XXI (dwarf spheroidal galaxy) canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T18775081 — 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: Andromeda XXI (dwarf spheroidal galaxy) Context triple: [Andromeda satellite system, hasMember, Andromeda XXI (dwarf spheroidal galaxy)]
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A.
Andromeda Dwarf II
Andromeda Dwarf II is a faint dwarf spheroidal satellite galaxy of the Andromeda Galaxy (M31) located in the Local Group.
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B.
Andromeda XV
Andromeda XV is a faint dwarf spheroidal satellite galaxy of the Andromeda Galaxy located within the Local Group.
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C.
Sextans Dwarf Spheroidal Galaxy
The Sextans Dwarf Spheroidal Galaxy is a faint, low-mass satellite galaxy of the Milky Way located in the constellation Sextans and composed primarily of old, metal-poor stars.
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D.
Canes Venatici II Dwarf Galaxy
Canes Venatici II Dwarf Galaxy is a faint, small satellite galaxy of the Milky Way located in the constellation Canes Venatici and classified as an ultra-faint dwarf spheroidal galaxy.
-
E.
Antlia 2 Dwarf Galaxy
Antlia 2 Dwarf Galaxy is an extremely diffuse, low-surface-brightness satellite galaxy of the Milky Way, notable for its large size yet faint appearance and recent discovery through Gaia data.
- 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: Andromeda XXI (dwarf spheroidal galaxy) Target entity description: Andromeda XXI is a faint dwarf spheroidal galaxy located in the Local Group and gravitationally bound as a satellite of the Andromeda Galaxy (M31).
-
A.
Andromeda Dwarf II
Andromeda Dwarf II is a faint dwarf spheroidal satellite galaxy of the Andromeda Galaxy (M31) located in the Local Group.
-
B.
Andromeda XV
Andromeda XV is a faint dwarf spheroidal satellite galaxy of the Andromeda Galaxy located within the Local Group.
-
C.
Sextans Dwarf Spheroidal Galaxy
The Sextans Dwarf Spheroidal Galaxy is a faint, low-mass satellite galaxy of the Milky Way located in the constellation Sextans and composed primarily of old, metal-poor stars.
-
D.
Canes Venatici II Dwarf Galaxy
Canes Venatici II Dwarf Galaxy is a faint, small satellite galaxy of the Milky Way located in the constellation Canes Venatici and classified as an ultra-faint dwarf spheroidal galaxy.
-
E.
Antlia 2 Dwarf Galaxy
Antlia 2 Dwarf Galaxy is an extremely diffuse, low-surface-brightness satellite galaxy of the Milky Way, notable for its large size yet faint appearance and recent discovery through Gaia data.
- F. None of above. chosen
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.