NGC 247
E597695
NGC 247 is a relatively nearby dwarf spiral galaxy in the Sculptor Group, notable for its elongated shape and prominent dust lanes.
All labels observed (1)
| Label | Occurrences |
|---|---|
| NGC 247 canonical | 3 |
How this entity was disambiguated
This entity first appeared as the object of triple T6431305 — 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 247 Context triple: [Cetus, containsGalaxy, NGC 247]
-
A.
NGC 2403
NGC 2403 is a nearby spiral galaxy in the constellation Camelopardalis, notable for its active star formation and numerous observed supernovae.
-
B.
NGC 205
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.
-
C.
NGC 221
NGC 221 is a compact dwarf elliptical galaxy in the Local Group, best known as the bright satellite galaxy M32 orbiting the Andromeda Galaxy.
-
D.
NGC 224
NGC 224 is the Andromeda Galaxy, a massive spiral galaxy and the closest major galactic neighbor to the Milky Way.
-
E.
NGC 2251
NGC 2251 is an open star cluster located in the constellation Monoceros, observed as a loose grouping of stars within the Milky Way.
- 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 247 Target entity description: NGC 247 is a relatively nearby dwarf spiral galaxy in the Sculptor Group, notable for its elongated shape and prominent dust lanes.
-
A.
NGC 2403
NGC 2403 is a nearby spiral galaxy in the constellation Camelopardalis, notable for its active star formation and numerous observed supernovae.
-
B.
NGC 205
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.
-
C.
NGC 221
NGC 221 is a compact dwarf elliptical galaxy in the Local Group, best known as the bright satellite galaxy M32 orbiting the Andromeda Galaxy.
-
D.
NGC 224
NGC 224 is the Andromeda Galaxy, a massive spiral galaxy and the closest major galactic neighbor to the Milky Way.
-
E.
NGC 2251
NGC 2251 is an open star cluster located in the constellation Monoceros, observed as a loose grouping of stars within the Milky Way.
- F. None of above. chosen
Statements (44)
| Predicate | Object |
|---|---|
| instanceOf |
Sculptor Group galaxy
ⓘ
dwarf spiral galaxy ⓘ galaxy ⓘ |
| absoluteMagnitudeV | −18.9 ⓘ |
| apparentMagnitudeV | 9.9 ⓘ |
| apparentSize | 21.4 × 6.9 arcminutes ⓘ |
| catalog | New General Catalogue ⓘ |
| catalogNumber | NGC 247 ⓘ |
| constellation | Cetus ⓘ |
| contains |
H II regions
ⓘ
young star clusters ⓘ |
| declination | −20° 45′ 38″ ⓘ |
| diameter | 70,000 light-years ⓘ |
| discoveredBy | William Herschel ⓘ |
| discoveryDate | 1784 ⓘ |
| distanceFromEarth |
11.1 million light-years
ⓘ
3.4 megaparsecs ⓘ |
| environment | loose galaxy group ⓘ |
| galaxyType | late-type spiral galaxy ⓘ |
| groupMembership | Sculptor Group ⓘ |
| hasDustLanes | yes ⓘ |
| hemisphere | southern sky ⓘ |
| inclinationToLineOfSight | approximately edge-on ⓘ |
| locatedIn | Sculptor Group ⓘ |
| majorAxisAngularSize | 21.4 arcminutes ⓘ |
| minorAxisAngularSize | 6.9 arcminutes ⓘ |
| morphologicalType | SAB(s)d ⓘ |
| nearbyGalaxyTo | NGC 253 ⓘ |
| notableFeature |
elongated shape
ⓘ
large void in the northern part of the disk ⓘ prominent dust lanes ⓘ |
| observedIn |
infrared wavelengths
ⓘ
optical wavelengths ⓘ radio wavelengths ⓘ |
| orientationDescription | highly elongated along its major axis ⓘ |
| otherDesignation |
ESO 540- G 014
ⓘ
PGC 2758 ⓘ UGCA 11 ⓘ |
| partOf | local volume of galaxies ⓘ |
| radialVelocity | 161 km/s ⓘ |
| redshift | 0.000533 ⓘ |
| rightAscension | 00h 47m 08s ⓘ |
| starFormationActivity | moderate ⓘ |
| surfaceBrightness | low to moderate ⓘ |
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 247 Description of subject: NGC 247 is a relatively nearby dwarf spiral galaxy in the Sculptor Group, notable for its elongated shape and prominent dust lanes.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.