Hydra–Centaurus
E511400
Hydra–Centaurus is a massive nearby galaxy supercluster that forms a major component of the large-scale structure of the local universe.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Hydra–Centaurus region | 2 |
| Hydra-Centaurus region | 1 |
| Hydra–Centaurus canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5336607 — 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: Hydra–Centaurus Context triple: [Hydra–Centaurus Supercluster, alsoKnownAs, Hydra–Centaurus]
-
A.
Monoceros
Monoceros is a faint constellation of the celestial equator known for containing several notable nebulae and star-forming regions, located between Orion and Hydra.
-
B.
Octans
Octans is a faint southern-sky constellation best known for containing the south celestial pole.
-
C.
Piscis Austrinus
Piscis Austrinus is a southern constellation traditionally depicted as a fish and best known for containing the bright star Fomalhaut.
-
D.
Cygnis
Cygnis is a digital product development company specializing in custom web and mobile applications, often leveraging emerging technologies like AI and cloud platforms.
-
E.
Reticulum
Reticulum is a small, faint southern constellation named after a reticle or net, located near the Large Magellanic Cloud.
- 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: Hydra–Centaurus Target entity description: Hydra–Centaurus is a massive nearby galaxy supercluster that forms a major component of the large-scale structure of the local universe.
-
A.
Monoceros
Monoceros is a faint constellation of the celestial equator known for containing several notable nebulae and star-forming regions, located between Orion and Hydra.
-
B.
Octans
Octans is a faint southern-sky constellation best known for containing the south celestial pole.
-
C.
Piscis Austrinus
Piscis Austrinus is a southern constellation traditionally depicted as a fish and best known for containing the bright star Fomalhaut.
-
D.
Cygnis
Cygnis is a digital product development company specializing in custom web and mobile applications, often leveraging emerging technologies like AI and cloud platforms.
-
E.
Reticulum
Reticulum is a small, faint southern constellation named after a reticle or net, located near the Large Magellanic Cloud.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
galaxy supercluster
ⓘ
large-scale structure of the universe ⓘ mass concentration ⓘ |
| alsoKnownAs |
Hydra–Centaurus Cluster
ⓘ
linked to:
Hydra–Centaurus Supercluster
Hydra–Centaurus Supercluster ⓘ |
| associatedWith |
Great Attractor
ⓘ
linked to:
Great Attractor region
|
| cataloguedIn |
Abell catalog of galaxy clusters
ⓘ
linked to:
Abell catalog of rich clusters of galaxies
|
| contains |
Abell 1060
ⓘ
Abell 3526 ⓘ Centaurus Cluster ⓘ Great Attractor region ⓘ Hydra Cluster ⓘ Norma Cluster ⓘ hot intracluster gas emitting X-rays ⓘ numerous galaxy groups ⓘ |
| coordinateSystem | described in supergalactic coordinates ⓘ |
| cosmologicalScale | tens of megaparsecs ⓘ |
| densityContrast | overdense relative to cosmic mean ⓘ |
| discoveredBy | extragalactic surveys in the 20th century ⓘ |
| distanceFromEarth |
approximately 150 million light-years
ⓘ
approximately 45 megaparsecs ⓘ |
| gravitationalInfluenceOn |
Local Group
ⓘ
Virgo Supercluster region ⓘ
linked to:
Virgo Supercluster
|
| hasSubstructure |
Centaurus subcluster
ⓘ
linked to:
Centaurus Cluster
Hydra subcluster ⓘ
linked to:
Hydra Cluster
Norma–Great Attractor subregion ⓘ
linked to:
Great Attractor region
|
| influences | peculiar velocities of nearby galaxies ⓘ |
| locatedIn |
Zone of Avoidance vicinity
ⓘ
constellation Centaurus ⓘ constellation Hydra ⓘ |
| majorComponentOf | local large-scale structure ⓘ |
| mass | on the order of 10^16 solar masses ⓘ |
| nearbyTo |
Pavo–Indus Supercluster
ⓘ
linked to:
Pavo–Indus–Telescopium supercluster region
Virgo Supercluster ⓘ |
| observedIn |
X-ray wavelengths
ⓘ
optical wavelengths ⓘ radio wavelengths ⓘ |
| partOf |
Laniakea Supercluster
ⓘ
local universe ⓘ |
| redshiftRange | z ≈ 0.01–0.02 ⓘ |
| relatedTo | Shapley Supercluster via large-scale flows ⓘ |
| roleInCosmicFlow | major attractor in local velocity field ⓘ |
| significance | key reference structure for mapping local universe ⓘ |
| structureType | complex of galaxy clusters and groups ⓘ |
| studiedIn |
cosmology
ⓘ
extragalactic astronomy ⓘ |
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: Hydra–Centaurus Description of subject: Hydra–Centaurus is a massive nearby galaxy supercluster that forms a major component of the large-scale structure of the local universe.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Hydra–Centaurus
linked to: Hydra–Centaurus
linked to: Hydra–Centaurus