Great Hercules Cluster
E267995
The Great Hercules Cluster is a bright, densely packed globular star cluster in the constellation Hercules, visible in small telescopes and one of the most prominent such clusters in the northern sky.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Great Hercules Cluster canonical | 5 |
How this entity was disambiguated
This entity first appeared as the object of triple T2458994 — 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: Great Hercules Cluster Context triple: [M13, alsoKnownAs, Great Hercules Cluster]
-
A.
Centaurus Cluster
The Centaurus Cluster is a massive, nearby galaxy cluster in the constellation Centaurus, notable for its rich population of galaxies and role as a major mass concentration within the local universe.
-
B.
Virgo Cluster
The Virgo Cluster is a massive, nearby galaxy cluster that serves as the central, dominant concentration of galaxies in our local region of the universe.
-
C.
Hydra–Centaurus Supercluster
The Hydra–Centaurus Supercluster is a massive nearby concentration of galaxy clusters that forms one of the dominant structures in our cosmic neighborhood and serves as a major component of the larger Laniakea Supercluster.
-
D.
Jewel Box cluster
The Jewel Box cluster is a bright and colorful open star cluster in the constellation Crux, renowned for its striking mix of blue and red stars visible even in small telescopes.
-
E.
Shapley Supercluster
The Shapley Supercluster is one of the most massive known concentrations of galaxies in the nearby universe, exerting a significant gravitational influence on surrounding cosmic structures.
- 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: Great Hercules Cluster Target entity description: The Great Hercules Cluster is a bright, densely packed globular star cluster in the constellation Hercules, visible in small telescopes and one of the most prominent such clusters in the northern sky.
-
A.
Centaurus Cluster
The Centaurus Cluster is a massive, nearby galaxy cluster in the constellation Centaurus, notable for its rich population of galaxies and role as a major mass concentration within the local universe.
-
B.
Virgo Cluster
The Virgo Cluster is a massive, nearby galaxy cluster that serves as the central, dominant concentration of galaxies in our local region of the universe.
-
C.
Hydra–Centaurus Supercluster
The Hydra–Centaurus Supercluster is a massive nearby concentration of galaxy clusters that forms one of the dominant structures in our cosmic neighborhood and serves as a major component of the larger Laniakea Supercluster.
-
D.
Jewel Box cluster
The Jewel Box cluster is a bright and colorful open star cluster in the constellation Crux, renowned for its striking mix of blue and red stars visible even in small telescopes.
-
E.
Shapley Supercluster
The Shapley Supercluster is one of the most massive known concentrations of galaxies in the nearby universe, exerting a significant gravitational influence on surrounding cosmic structures.
- F. None of above. chosen
Statements (45)
| Predicate | Object |
|---|---|
| instanceOf |
deep-sky object
ⓘ
globular star cluster ⓘ |
| age | about 11.7 billion years ⓘ |
| alsoKnownAs |
M13
ⓘ
linked to:
M 13
Messier 13 ⓘ NGC 6205 ⓘ |
| angularDiameter | about 20 arcminutes ⓘ |
| apparentMagnitudeV | 5.8 ⓘ |
| belongsTo |
Milky Way halo
ⓘ
linked to:
Milky Way stellar halo
|
| bestSeenIn | northern hemisphere ⓘ |
| bestViewingSeason |
late spring
ⓘ
summer ⓘ |
| cataloguedBy | Charles Messier ⓘ |
| catalogueEntry |
Messier catalogue
ⓘ
New General Catalogue ⓘ |
| celestialHemisphere | northern sky ⓘ |
| clusterType | Oosterhoff type II (often classified) ⓘ |
| contains |
blue straggler stars
ⓘ
many red giant stars ⓘ variable stars ⓘ |
| coreRadius | about 1.7 parsecs ⓘ |
| declination | +36° 28′ ⓘ |
| discoveredBy |
Edmond Halley
ⓘ
linked to:
Edmund Halley
|
| discoveryYear | 1714 ⓘ |
| distanceFromEarth |
about 22,000 light-years
ⓘ
about 6.8 kiloparsecs ⓘ |
| galacticLatitude | +40.9° ⓘ |
| galacticLongitude | 59.0° ⓘ |
| halfLightRadius | about 3.3 parsecs ⓘ |
| hasSurfaceBrightness | high central surface brightness ⓘ |
| isTargetFor |
amateur astronomers
ⓘ
astrophysical studies of stellar evolution ⓘ |
| locatedIn | Milky Way ⓘ |
| locatedInConstellation | Hercules ⓘ |
| mass | about 600,000 solar masses ⓘ |
| MessierNumber |
M13
ⓘ
linked to:
M 13
|
| metallicity | [Fe/H] ≈ −1.5 ⓘ |
| NGCNumber | NGC 6205 ⓘ |
| notableFeature |
bright, dense core
ⓘ
one of the most prominent globular clusters in the northern sky ⓘ |
| numberOfStars | several hundred thousand ⓘ |
| rightAscension | 16h 41m ⓘ |
| spectralTypeDominant | G and K giants ⓘ |
| visibility |
visible in binoculars under dark skies
ⓘ
visible in small telescopes ⓘ |
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: Great Hercules Cluster Description of subject: The Great Hercules Cluster is a bright, densely packed globular star cluster in the constellation Hercules, visible in small telescopes and one of the most prominent such clusters in the northern sky.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.