Stephan's Quintet
E59351
Stephan's Quintet is a visually striking compact group of five galaxies in the constellation Pegasus, famous for their complex gravitational interactions and dramatic appearance in astronomical imagery.
All labels observed (10)
How this entity was disambiguated
This entity first appeared as the object of triple T476219 — 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: Stephan's Quintet Context triple: [James Webb Space Telescope, notableFirstImageTarget, Stephan's Quintet]
-
A.
Pleiades
The Pleiades are a famous open star cluster in the constellation Taurus, often known as the Seven Sisters in Greek mythology.
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B.
Triangulum Galaxy
The Triangulum Galaxy is a nearby spiral galaxy in the Local Group, notable as one of the closest large galaxies to the Milky Way and a companion to the Andromeda Galaxy.
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C.
Pillars of Creation
Pillars of Creation is a famous Hubble Space Telescope image showing towering columns of interstellar gas and dust in the Eagle Nebula where new stars are being born.
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D.
Magellanic Clouds
The Magellanic Clouds are two irregular dwarf galaxies orbiting the Milky Way, prominently visible from the Southern Hemisphere as hazy patches in the night sky.
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E.
Hyades
The Hyades are a sisterhood of nymphs in Greek mythology, best known for their association with rain and their representation as a prominent open star cluster in the constellation Taurus.
- 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: Stephan's Quintet Target entity description: Stephan's Quintet is a visually striking compact group of five galaxies in the constellation Pegasus, famous for their complex gravitational interactions and dramatic appearance in astronomical imagery.
-
A.
Pleiades
The Pleiades are a famous open star cluster in the constellation Taurus, often known as the Seven Sisters in Greek mythology.
-
B.
Triangulum Galaxy
The Triangulum Galaxy is a nearby spiral galaxy in the Local Group, notable as one of the closest large galaxies to the Milky Way and a companion to the Andromeda Galaxy.
-
C.
Pillars of Creation
Pillars of Creation is a famous Hubble Space Telescope image showing towering columns of interstellar gas and dust in the Eagle Nebula where new stars are being born.
-
D.
Magellanic Clouds
The Magellanic Clouds are two irregular dwarf galaxies orbiting the Milky Way, prominently visible from the Southern Hemisphere as hazy patches in the night sky.
-
E.
Hyades
The Hyades are a sisterhood of nymphs in Greek mythology, best known for their association with rain and their representation as a prominent open star cluster in the constellation Taurus.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
compact galaxy group
ⓘ
galaxy group ⓘ |
| alsoKnownAs |
HCG 92
ⓘ
Hickson Compact Group 92 ⓘ |
| cataloguedIn | Hickson Compact Group catalogue ⓘ |
| discoveredBy | Édouard Stephan ⓘ |
| discoveryYear | 1877 ⓘ |
| foregroundGalaxy | NGC 7320 ⓘ |
| foregroundGalaxyDistance | about 40 million light-years ⓘ |
| hasAngularSize | about 4 arcminutes ⓘ |
| hasApproximateDistance | about 290 million light-years ⓘ |
| hasEnvironment | dense intragroup medium ⓘ |
| hasNGCDesignation |
NGC 7317
ⓘ
Stephan's Quintet self-linksurface differs ⓘ
surface form:
NGC 7318A
Stephan's Quintet self-linksurface differs ⓘ
surface form:
NGC 7318B
NGC 7319 ⓘ NGC 7320 ⓘ |
| hasNotableFeature |
complex intergalactic gas structures
ⓘ
large-scale shock front in the intragroup medium ⓘ prominent tidal tails ⓘ regions of intense star formation ⓘ strong gravitational interactions between member galaxies ⓘ |
| hasSpectralFeature | strong emission lines from shocked gas ⓘ |
| isFamousFor |
dramatic appearance in astronomical imagery
ⓘ
evidence of galaxy collisions and mergers ⓘ |
| isPrototypeOf | compact galaxy groups ⓘ |
| locatedInConstellation | Pegasus ⓘ |
| memberGalaxyType |
NGC 7317 is an elliptical galaxy
ⓘ
NGC 7318A is an elliptical galaxy ⓘ NGC 7318B is a spiral galaxy ⓘ NGC 7319 is a barred spiral galaxy ⓘ NGC 7320 is a spiral galaxy ⓘ |
| observedByTelescope |
Chandra X-ray Observatory
ⓘ
Hubble Space Telescope ⓘ James Webb Space Telescope ⓘ Spitzer Space Telescope ⓘ |
| observedInWavelength |
X-ray
ⓘ
infrared ⓘ optical ⓘ radio ⓘ |
| redshiftGroupMembers |
NGC 7317
ⓘ
Stephan's Quintet self-linksurface differs ⓘ
surface form:
NGC 7318A
NGC 7318B ⓘ NGC 7319 ⓘ |
| usedForStudyOf |
galaxy interactions
ⓘ
intergalactic medium ⓘ shock physics in astrophysical plasmas ⓘ starburst activity ⓘ |
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: Stephan's Quintet Description of subject: Stephan's Quintet is a visually striking compact group of five galaxies in the constellation Pegasus, famous for their complex gravitational interactions and dramatic appearance in astronomical imagery.
Referenced by (30)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
NGC 7318A
this entity surface form:
NGC 7318B
this entity surface form:
NGC 7318A
subject surface form:
NGC 7317
subject surface form:
NGC 7317
this entity surface form:
Stephan's Quintet core group
subject surface form:
NGC 7318A
subject surface form:
NGC 7318A
subject surface form:
NGC 7318B
subject surface form:
NGC 7318B
subject surface form:
NGC 7318B
this entity surface form:
compact galaxy group Stephan's Quintet
subject surface form:
NGC 7319
subject surface form:
NGC 7319
subject surface form:
NGC 7320
subject surface form:
NGC 7320
this entity surface form:
Stephan's Quintet main group
this entity surface form:
Stephan's Quintet compact galaxy group