UGC 245
E459113
UGC 245 is a dwarf spheroidal satellite galaxy of the Andromeda Galaxy located in the Local Group.
All labels observed (1)
| Label | Occurrences |
|---|---|
| UGC 245 canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4618694 — 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: UGC 245 Context triple: [Andromeda I, alternativeName, UGC 245]
-
A.
UGC 5423
UGC 5423 is a dwarf irregular galaxy located in the nearby M81 Group in the constellation Ursa Major.
-
B.
UGC 5497
UGC 5497 is a dwarf galaxy that is a member of the nearby M81 Group of galaxies in the constellation Ursa Major.
-
C.
UGC 5336
UGC 5336 is a dwarf irregular galaxy located in the nearby M81 Group in the constellation Ursa Major.
-
D.
UGC 6541
UGC 6541 is a dwarf irregular galaxy located in the nearby M81 Group in the constellation Ursa Major.
-
E.
UGC 5935
UGC 5935 is a dwarf galaxy that is a member of the nearby M81 Group of galaxies in the constellation Ursa Major.
- 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: UGC 245 Target entity description: UGC 245 is a dwarf spheroidal satellite galaxy of the Andromeda Galaxy located in the Local Group.
-
A.
UGC 5423
UGC 5423 is a dwarf irregular galaxy located in the nearby M81 Group in the constellation Ursa Major.
-
B.
UGC 5497
UGC 5497 is a dwarf galaxy that is a member of the nearby M81 Group of galaxies in the constellation Ursa Major.
-
C.
UGC 5336
UGC 5336 is a dwarf irregular galaxy located in the nearby M81 Group in the constellation Ursa Major.
-
D.
UGC 6541
UGC 6541 is a dwarf irregular galaxy located in the nearby M81 Group in the constellation Ursa Major.
-
E.
UGC 5935
UGC 5935 is a dwarf galaxy that is a member of the nearby M81 Group of galaxies in the constellation Ursa Major.
- F. None of above. chosen
Statements (41)
| Predicate | Object |
|---|---|
| instanceOf |
astronomical object
ⓘ
dwarf spheroidal galaxy ⓘ galaxy in the Local Group ⓘ satellite galaxy ⓘ |
| belongsToCatalog |
2MASS Extended Source Catalog
NERFINISHED
ⓘ
PGC NERFINISHED ⓘ UGC NERFINISHED ⓘ |
| hasAbsoluteMagnitudeV | about -8.5 ⓘ |
| hasAlternativeName |
2MASX J00424433+3833148
NERFINISHED
ⓘ
And XXVIII ⓘ Andromeda XXVIII NERFINISHED ⓘ LEDA 2768 NERFINISHED ⓘ PGC 002768 ⓘ |
| hasApparentMagnitudeV | ~15.2 ⓘ |
| hasDeclination | +38° (approximate) ⓘ |
| hasDistanceFromAndromedaGalaxy | ~365 kpc ⓘ |
| hasDistanceFromEarth |
~1.2 Mpc
ⓘ
~3.8 million light-years ⓘ |
| hasDominantDarkMatterComponent | true ⓘ |
| hasDominantOldStellarPopulation | true ⓘ |
| hasEnvironment | outer halo of the Andromeda Galaxy ⓘ |
| hasGalaxyType | dwarf galaxy ⓘ |
| hasLowSurfaceBrightness | true ⓘ |
| hasMorphologicalType | dSph ⓘ |
| hasRadialVelocity | ~-331 km/s ⓘ |
| hasRedshift | z ≈ -0.0011 ⓘ |
| hasRightAscension | 00h 42m (approximate) ⓘ |
| hasShape | roughly spheroidal ⓘ |
| hasStellarMass | of order 10^5–10^6 solar masses ⓘ |
| hasVeryLowMetallicity | true ⓘ |
| hasVeryLowStarFormation | true ⓘ |
| isDominatedByOldStars | true ⓘ |
| isGasPoor | true ⓘ |
| isLocatedInConstellation | Andromeda NERFINISHED ⓘ |
| isMemberOf | Local Group NERFINISHED ⓘ |
| isNearbyGalaxy | true ⓘ |
| isNonActiveGalaxy | true ⓘ |
| isResolvedIntoStars | in deep imaging ⓘ |
| isSatelliteOf | Andromeda Galaxy NERFINISHED ⓘ |
| orbitsWithin | Andromeda subgroup of the Local Group NERFINISHED ⓘ |
| wasIdentifiedAsAndromedaSatellite | in the early 2010s ⓘ |
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: UGC 245 Description of subject: UGC 245 is a dwarf spheroidal satellite galaxy of the Andromeda Galaxy located in the Local Group.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.