NGC 205
E111285
NGC 205 is a dwarf elliptical satellite galaxy of the Andromeda Galaxy, notable for its proximity to the Local Group’s largest spiral and its mixed old and young stellar populations.
All labels observed (3)
How this entity was disambiguated
This entity first appeared as the object of triple T924571 — 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: NGC 205 Context triple: [Andromeda Galaxy, hasSatelliteGalaxy, NGC 205]
-
A.
NGC 224
NGC 224 is the Andromeda Galaxy, a massive spiral galaxy and the closest major galactic neighbor to the Milky Way.
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B.
NGC 6822
NGC 6822 is a barred irregular dwarf galaxy located in the constellation Sagittarius and is one of the nearest and best-studied galaxies outside the Milky Way.
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C.
NGC 1432
NGC 1432 is a reflection nebula in the constellation Taurus that is part of the Pleiades (Seven Sisters) star cluster.
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D.
Messier 20
Messier 20, also known as the Trifid Nebula, is a bright, star-forming emission and reflection nebula famous for its striking three-lobed appearance.
-
E.
Messier 22
Messier 22 is a bright globular star cluster located near the center of the Milky Way, visible in the constellation Sagittarius and notable for being one of the closest and most easily observed clusters of its kind.
- 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: NGC 205 Target entity description: NGC 205 is a dwarf elliptical satellite galaxy of the Andromeda Galaxy, notable for its proximity to the Local Group’s largest spiral and its mixed old and young stellar populations.
-
A.
NGC 224
NGC 224 is the Andromeda Galaxy, a massive spiral galaxy and the closest major galactic neighbor to the Milky Way.
-
B.
NGC 6822
NGC 6822 is a barred irregular dwarf galaxy located in the constellation Sagittarius and is one of the nearest and best-studied galaxies outside the Milky Way.
-
C.
NGC 1432
NGC 1432 is a reflection nebula in the constellation Taurus that is part of the Pleiades (Seven Sisters) star cluster.
-
D.
Messier 20
Messier 20, also known as the Trifid Nebula, is a bright, star-forming emission and reflection nebula famous for its striking three-lobed appearance.
-
E.
Messier 22
Messier 22 is a bright globular star cluster located near the center of the Milky Way, visible in the constellation Sagittarius and notable for being one of the closest and most easily observed clusters of its kind.
- F. None of above. chosen
Statements (45)
| Predicate | Object |
|---|---|
| instanceOf |
dwarf elliptical galaxy
ⓘ
galaxy in the Local Group ⓘ satellite galaxy ⓘ |
| absoluteMagnitudeV | −16.4 ⓘ |
| alsoKnownAs |
M110
ⓘ
Messier 110 ⓘ PGC 2557 ⓘ UGC 426 ⓘ |
| angularSize | 21.9 × 11.0 arcminutes ⓘ |
| apparentMagnitudeV | 8.1 ⓘ |
| cataloguedBy | Charles Messier ⓘ |
| contains | globular clusters ⓘ |
| declination | +41° 41′ 07″ ⓘ |
| discoveredBy | Giovanni Battista Hodierna ⓘ |
| discoveryYear | before 1654 ⓘ |
| distanceFromEarth |
about 2.7 million light-years
ⓘ
about 824 kiloparsecs ⓘ |
| epoch | J2000 ⓘ |
| has |
central dust
ⓘ
gas ⓘ resolved stellar populations ⓘ |
| hasNucleus | yes ⓘ |
| hasStellarPopulation |
old stars
ⓘ
young stars ⓘ |
| isCompanionOf |
Andromeda Galaxy
ⓘ
surface form:
M31
|
| isPartOf |
Andromeda subgroup
ⓘ
surface form:
Andromeda subgroup of the Local Group
|
| isVisibleWith | small telescopes ⓘ |
| locatedInConstellation |
Andromeda Galaxy
ⓘ
surface form:
Andromeda
|
| mass | about 7×10^8 solar masses ⓘ |
| memberOf | Local Group ⓘ |
| messierNumber | M110 ⓘ |
| metallicity | sub-solar ⓘ |
| morphologicalType | dE5 ⓘ |
| observedIn |
infrared wavelengths
ⓘ
optical wavelengths ⓘ radio wavelengths ⓘ |
| orientation | nearly edge-on ⓘ |
| radialVelocity | −241 km/s ⓘ |
| rightAscension | 00h 40m 22s ⓘ |
| satelliteOf | Andromeda Galaxy ⓘ |
| shows |
mixed-age stellar populations
ⓘ
recent star formation ⓘ tidal interaction with Andromeda Galaxy ⓘ |
| starFormationHistory | extended and episodic ⓘ |
| surfaceBrightnessProfile | elliptical ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: NGC 205 Description of subject: NGC 205 is a dwarf elliptical satellite galaxy of the Andromeda Galaxy, notable for its proximity to the Local Group’s largest spiral and its mixed old and young stellar populations.
Referenced by (7)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
PGC 2557
this entity surface form:
PGC 2557
this entity surface form:
PGC 2554