NGC 598
E112201
NGC 598 is the Triangulum Galaxy, a nearby spiral galaxy in the Local Group and one of the closest large galaxies to the Milky Way.
All labels observed (1)
| Label | Occurrences |
|---|---|
| NGC 598 canonical | 4 |
How this entity was disambiguated
This entity first appeared as the object of triple T934031 — 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 598 Context triple: [Triangulum Galaxy, alsoKnownAs, NGC 598]
-
A.
NGC 1432
NGC 1432 is a reflection nebula in the constellation Taurus that is part of the Pleiades (Seven Sisters) star cluster.
-
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 224
NGC 224 is the Andromeda Galaxy, a massive spiral galaxy and the closest major galactic neighbor to the Milky Way.
-
D.
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.
-
E.
Messier 8
Messier 8, also known as the Lagoon Nebula, is a large, bright emission nebula and active star-forming region visible in the constellation Sagittarius.
- 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 598 Target entity description: NGC 598 is the Triangulum Galaxy, a nearby spiral galaxy in the Local Group and one of the closest large galaxies to the Milky Way.
-
A.
NGC 1432
NGC 1432 is a reflection nebula in the constellation Taurus that is part of the Pleiades (Seven Sisters) star cluster.
-
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 224
NGC 224 is the Andromeda Galaxy, a massive spiral galaxy and the closest major galactic neighbor to the Milky Way.
-
D.
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.
-
E.
Messier 8
Messier 8, also known as the Lagoon Nebula, is a large, bright emission nebula and active star-forming region visible in the constellation Sagittarius.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
Local Group galaxy
ⓘ
Triangulum Galaxy ⓘ galaxy ⓘ spiral galaxy ⓘ |
| absoluteMagnitudeV | about −18.9 ⓘ |
| addedToCatalog | Messier catalogue ⓘ |
| alsoKnownAs |
M33
ⓘ
linked to:
Triangulum Galaxy
Messier 33 ⓘ
linked to:
Triangulum Galaxy
Triangulum Galaxy ⓘ |
| angularSize | about 70′ × 40′ ⓘ |
| apparentMagnitude | about 5.7 ⓘ |
| apparentMagnitudeV | about 5.7 ⓘ |
| catalogCode |
M33
ⓘ
linked to:
Triangulum Galaxy
Messier 33 ⓘ
linked to:
Triangulum Galaxy
NGC 598 ⓘ |
| catalogNumberInMessier | 33 ⓘ |
| constellation |
Triangulum
ⓘ
linked to:
Triangulum Galaxy
|
| contains |
H II regions
ⓘ
giant H II region NGC 604 ⓘ
linked to:
NGC 604
star-forming regions ⓘ young star clusters ⓘ |
| declination | +30° 39′ 36″ ⓘ |
| discoveredBy | Giovanni Battista Hodierna ⓘ |
| discoveryYear | before 1654 ⓘ |
| distanceFromEarth | about 3 million light-years ⓘ |
| distanceFromMilkyWay | about 3 million light-years ⓘ |
| distanceInMegaparsecs | about 0.9 Mpc ⓘ |
| galaxyType | SA(s)cd ⓘ |
| hasFeature |
low bulge-to-disk ratio
ⓘ
prominent star-forming disk ⓘ well-defined spiral arms ⓘ |
| hasSatelliteRelationship | possible satellite of the Andromeda Galaxy ⓘ |
| isOneOf |
closest large galaxies to the Milky Way
ⓘ
largest members of the Local Group ⓘ |
| linearDiameter | about 60,000 light-years ⓘ |
| locatedIn | nearby universe ⓘ |
| mass | about 5×10^10 solar masses ⓘ |
| memberOf | Local Group ⓘ |
| morphologicalType | unbarred spiral galaxy ⓘ |
| nearbyTo |
Andromeda Galaxy
ⓘ
Milky Way ⓘ |
| observedBy | Charles Messier ⓘ |
| orientation | moderately inclined to line of sight ⓘ |
| radialVelocity | about −179 km/s ⓘ |
| redshift | about −0.000597 ⓘ |
| rightAscension | 01h 33m 50.9s ⓘ |
| stellarMass | about 3–6×10^9 solar masses ⓘ |
| 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: NGC 598 Description of subject: NGC 598 is the Triangulum Galaxy, a nearby spiral galaxy in the Local Group and one of the closest large galaxies to the Milky Way.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.