PGC 29488
E491707
PGC 29488 is a faint dwarf spheroidal galaxy in the constellation Leo and one of the closest known satellite galaxies of the Milky Way.
All labels observed (2)
How this entity was disambiguated
This entity first appeared as the object of triple T5075058 — 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 29488 Context triple: [Leo I Dwarf Galaxy, alternateName, PGC 29488]
-
A.
PGC 2557
PGC 2557 is a nearby irregular dwarf galaxy in the Local Group, notable for its intense star formation and heavy obscuration by interstellar dust in the Milky Way’s plane.
-
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 3085
PGC 3085 is a dwarf irregular galaxy better known as the Small Magellanic Cloud, a nearby satellite of the Milky Way visible from the Southern Hemisphere.
-
D.
PGC 63616
PGC 63616 is a barred irregular dwarf galaxy in the Local Group, notable for its proximity to the Milky Way and active star-forming regions.
-
E.
NGC 2976
NGC 2976 is a nearby dwarf spiral galaxy in the constellation Ursa Major and a member of the M81 Group of galaxies.
- 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 29488 Target entity description: PGC 29488 is a faint dwarf spheroidal galaxy in the constellation Leo and one of the closest known satellite galaxies of the Milky Way.
-
A.
PGC 2557
PGC 2557 is a nearby irregular dwarf galaxy in the Local Group, notable for its intense star formation and heavy obscuration by interstellar dust in the Milky Way’s plane.
-
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 3085
PGC 3085 is a dwarf irregular galaxy better known as the Small Magellanic Cloud, a nearby satellite of the Milky Way visible from the Southern Hemisphere.
-
D.
PGC 63616
PGC 63616 is a barred irregular dwarf galaxy in the Local Group, notable for its proximity to the Milky Way and active star-forming regions.
-
E.
NGC 2976
NGC 2976 is a nearby dwarf spiral galaxy in the constellation Ursa Major and a member of the M81 Group of galaxies.
- F. None of above. chosen
Statements (32)
| Predicate | Object |
|---|---|
| instanceOf | dwarf spheroidal galaxy ⓘ |
| belongsTo | Milky Way satellite system ⓘ |
| catalog | Principal Galaxies Catalogue ⓘ |
| dominantStellarPopulation | old stars ⓘ |
| gasContent | low ⓘ |
| hasAngularSize | small ⓘ |
| hasCatalogueNumber | PGC 29488 ⓘ |
| hasEnvironment |
Milky Way halo
ⓘ
linked to:
Milky Way stellar halo
|
| hasGalaxyType |
dwarf galaxy
ⓘ
spheroidal galaxy ⓘ |
| hasInterstellarMedium | very little or none ⓘ |
| hasMorphologicalType | dSph ⓘ |
| hasShape | roughly spheroidal ⓘ |
| hasStellarMass | low ⓘ |
| isDarkMatterDominated | likely ⓘ |
| isDwarf | true ⓘ |
| isDynamicallyHotSystem | true ⓘ |
| isFaint | true ⓘ |
| isGravitationallyBoundTo | Milky Way ⓘ |
| isInNorthernSky | true ⓘ |
| isNearbyGalaxy | true ⓘ |
| isOneOfClosestKnownSatelliteGalaxiesOf | Milky Way ⓘ |
| isResolvedIntoIndividualStars | true ⓘ |
| isSpheroidal | true ⓘ |
| locatedInConstellation | Leo ⓘ |
| memberOf | Local Group dwarf galaxies ⓘ |
| observedIn |
near-infrared wavelengths
ⓘ
optical wavelengths ⓘ |
| partOf | Local Group ⓘ |
| satelliteOf | Milky Way ⓘ |
| starFormationActivity | very low ⓘ |
| surfaceBrightness | low ⓘ |
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: PGC 29488 Description of subject: PGC 29488 is a faint dwarf spheroidal galaxy in the constellation Leo and one of the closest known satellite galaxies of the Milky Way.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: PGC 29488