NGC 7172
E878259
NGC 7172 is a Seyfert 2 spiral galaxy located in the constellation Piscis Austrinus, notable for its active galactic nucleus and obscured central region.
All labels observed (1)
| Label | Occurrences |
|---|---|
| NGC 7172 canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T10586486 — 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 7172 Context triple: [Piscis Austrinus, containsDeepSkyObject, NGC 7172]
-
A.
NGC 7174
NGC 7174 is a peculiar, interacting spiral galaxy located in the constellation Piscis Austrinus, notable for its distorted structure caused by gravitational interaction with nearby galaxies.
-
B.
NGC 7173
NGC 7173 is an elliptical galaxy located in the constellation Piscis Austrinus, often studied as part of a compact group of interacting galaxies.
-
C.
NGC 7176
NGC 7176 is a galaxy located in the constellation Piscis Austrinus.
-
D.
NGC 7317
NGC 7317 is an elliptical galaxy that forms part of Stephan's Quintet, a famous compact group of interacting galaxies in the constellation Pegasus.
-
E.
NGC 7319
NGC 7319 is a barred spiral galaxy in the constellation Pegasus, notable as a member of the interacting galaxy group known as Stephan's Quintet.
- 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 7172 Target entity description: NGC 7172 is a Seyfert 2 spiral galaxy located in the constellation Piscis Austrinus, notable for its active galactic nucleus and obscured central region.
-
A.
NGC 7174
NGC 7174 is a peculiar, interacting spiral galaxy located in the constellation Piscis Austrinus, notable for its distorted structure caused by gravitational interaction with nearby galaxies.
-
B.
NGC 7173
NGC 7173 is an elliptical galaxy located in the constellation Piscis Austrinus, often studied as part of a compact group of interacting galaxies.
-
C.
NGC 7176
NGC 7176 is a galaxy located in the constellation Piscis Austrinus.
-
D.
NGC 7317
NGC 7317 is an elliptical galaxy that forms part of Stephan's Quintet, a famous compact group of interacting galaxies in the constellation Pegasus.
-
E.
NGC 7319
NGC 7319 is a barred spiral galaxy in the constellation Pegasus, notable as a member of the interacting galaxy group known as Stephan's Quintet.
- F. None of above. chosen
Statements (45)
| Predicate | Object |
|---|---|
| instanceOf |
Seyfert 2 galaxy
ⓘ
Seyfert galaxy ⓘ spiral galaxy ⓘ |
| AGNObscurationCause | torus and host-galaxy dust ⓘ |
| AGNType | type 2 ⓘ |
| apparentMagnitudeV | ≈11.9 ⓘ |
| apparentSize | ≈3.4 × 1.0 arcminutes ⓘ |
| catalog | New General Catalogue NERFINISHED ⓘ |
| discoveredBy | John Herschel NERFINISHED ⓘ |
| discoveryYear | 1834 ⓘ |
| distanceFromEarth |
≈110 million light-years
ⓘ
≈34 Mpc ⓘ |
| emitsInWaveband |
X-ray
ⓘ
infrared ⓘ optical ⓘ |
| galacticLatitude | high inclination to line of sight ⓘ |
| hasActiveGalacticNucleus | true ⓘ |
| hasBar | possible weak bar ⓘ |
| hasDustLane | true ⓘ |
| hasDustObscuration | true ⓘ |
| hasObscuredNucleus | true ⓘ |
| hasStarFormation | moderate ⓘ |
| hasSupermassiveBlackHole | true ⓘ |
| hostEnvironment | field galaxy ⓘ |
| hostGalaxyType | early-type spiral ⓘ |
| locatedInConstellation | Piscis Austrinus NERFINISHED ⓘ |
| morphologicalType | Sa ⓘ |
| nuclearActivityDriver | accretion onto supermassive black hole ⓘ |
| nuclearRegion | heavily obscured ⓘ |
| observedBy |
Chandra X-ray Observatory
NERFINISHED
ⓘ
ESO telescopes NERFINISHED ⓘ Hubble Space Telescope NERFINISHED ⓘ XMM-Newton NERFINISHED ⓘ |
| orientation | edge-on ⓘ |
| otherDesignation |
2MASX J22020533-3159429
NERFINISHED
ⓘ
ESO 109- G 013 NERFINISHED ⓘ IRAS 21591-3214 NERFINISHED ⓘ MCG -05-52-005 NERFINISHED ⓘ PGC 67840 NERFINISHED ⓘ |
| partOf | local universe ⓘ |
| radialVelocity | ≈2600 km/s ⓘ |
| redshift | 0.0087 ⓘ |
| spectralFeatures |
obscured broad-line region
ⓘ
strong narrow emission lines ⓘ |
| XRaySource | true ⓘ |
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 7172 Description of subject: NGC 7172 is a Seyfert 2 spiral galaxy located in the constellation Piscis Austrinus, notable for its active galactic nucleus and obscured central region.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.