PGC 1384
E514342
PGC 1384 is a faint dwarf irregular galaxy in the Local Group, best known as the nearby galaxy IC 1613 in the constellation Cetus.
All labels observed (1)
| Label | Occurrences |
|---|---|
| PGC 1384 canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5363208 — 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 1384 Context triple: [IC 1613, catalogDesignation, PGC 1384]
-
A.
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.
-
B.
PGC 3085
PGC 3085 is a galaxy listed in the Principal Galaxies Catalogue, an astronomical catalog of known galaxies.
-
C.
PGC 29488
PGC 29488 is a faint dwarf spheroidal galaxy in the constellation Leo and one of the closest known satellite galaxies of the Milky Way.
-
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.
PGC 2121
PGC 2121 is a faint, gas-rich dwarf irregular galaxy located in the outskirts of the Andromeda Galaxy’s local group region.
- 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 1384 Target entity description: PGC 1384 is a faint dwarf irregular galaxy in the Local Group, best known as the nearby galaxy IC 1613 in the constellation Cetus.
-
A.
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.
-
B.
PGC 3085
PGC 3085 is a galaxy listed in the Principal Galaxies Catalogue, an astronomical catalog of known galaxies.
-
C.
PGC 29488
PGC 29488 is a faint dwarf spheroidal galaxy in the constellation Leo and one of the closest known satellite galaxies of the Milky Way.
-
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.
PGC 2121
PGC 2121 is a faint, gas-rich dwarf irregular galaxy located in the outskirts of the Andromeda Galaxy’s local group region.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf | dwarf irregular galaxy ⓘ |
| absoluteMagnitudeV | −15.3 ⓘ |
| alsoKnownAs |
Caldwell 51
NERFINISHED
ⓘ
DDO 8 NERFINISHED ⓘ IC 1613 NERFINISHED ⓘ UGC 668 NERFINISHED ⓘ |
| angularSize | 16.2 × 14.5 arcminutes ⓘ |
| apparentMagnitudeB | 10.2 ⓘ |
| apparentMagnitudeV | 9.9 ⓘ |
| bestSeenInMonth | October ⓘ |
| catalog |
Caldwell catalogue
NERFINISHED
ⓘ
Index Catalogue NERFINISHED ⓘ Principal Galaxies Catalogue NERFINISHED ⓘ Uppsala General Catalogue NERFINISHED ⓘ |
| containsStellarPopulations |
intermediate-age stars
ⓘ
old stars ⓘ young stars ⓘ |
| darkMatterDominated | true ⓘ |
| declination | +02° 07′ 04″ ⓘ |
| discoveredBy | Max Wolf NERFINISHED ⓘ |
| discoveryYear | 1906 ⓘ |
| distanceFromEarth |
about 2.4 million light-years
ⓘ
about 730 kiloparsecs ⓘ |
| foregroundExtinction | low ⓘ |
| galacticEnvironment | Local Group field galaxy ⓘ |
| gasContent | gas-rich ⓘ |
| gasPhase | neutral hydrogen rich ⓘ |
| hasCepheidVariables | true ⓘ |
| hasHIIRegions | true ⓘ |
| hasSupernovaRemnants | true ⓘ |
| hasWellDefinedSpiralArms | false ⓘ |
| hemisphere | Northern sky ⓘ |
| isBarred | no prominent bar ⓘ |
| isNearbyGalaxy | true ⓘ |
| locatedInConstellation | Cetus NERFINISHED ⓘ |
| memberOf | Local Group NERFINISHED ⓘ |
| metallicity | low ⓘ |
| morphologicalType | IB(s)m ⓘ |
| observedIn |
optical wavelengths
ⓘ
radio wavelengths ⓘ ultraviolet wavelengths ⓘ |
| radialVelocity | −234 km/s ⓘ |
| redshift | −0.00078 ⓘ |
| rightAscension | 01h 04m 47s ⓘ |
| starFormationActivity | ongoing ⓘ |
| surfaceBrightness | low ⓘ |
| usedFor | distance scale calibration ⓘ |
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 1384 Description of subject: PGC 1384 is a faint dwarf irregular galaxy in the Local Group, best known as the nearby galaxy IC 1613 in the constellation Cetus.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.