IC 4756
E460848
IC 4756 is a large, bright open star cluster in the constellation Serpens, often observed as a rich field of moderately aged stars.
All labels observed (1)
| Label | Occurrences |
|---|---|
| IC 4756 canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4619198 — 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: IC 4756 Context triple: [Serpens Cauda, contains, IC 4756]
-
A.
IC 4895
IC 4895 is a barred irregular dwarf galaxy in the Local Group, better known as NGC 6822 or Barnard's Galaxy, located in the constellation Sagittarius.
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B.
IC 1613
IC 1613 is a dwarf irregular galaxy in the constellation Cetus and a member of the Local Group, notable for its low dust content and use in calibrating the cosmic distance scale.
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C.
NGC 6205
NGC 6205 is a bright, densely packed globular star cluster in the constellation Hercules, commonly known as the Great Hercules Cluster (M13).
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D.
IC 2574
IC 2574 is a dwarf irregular galaxy in the constellation Ursa Major, notable for its active star formation and membership in the nearby M81 Group of galaxies.
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E.
NGC 4725
NGC 4725 is a barred spiral galaxy in the constellation Coma Berenices, notable for having only one prominent spiral arm.
- 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: IC 4756 Target entity description: IC 4756 is a large, bright open star cluster in the constellation Serpens, often observed as a rich field of moderately aged stars.
-
A.
IC 4895
IC 4895 is a barred irregular dwarf galaxy in the Local Group, better known as NGC 6822 or Barnard's Galaxy, located in the constellation Sagittarius.
-
B.
IC 1613
IC 1613 is a dwarf irregular galaxy in the constellation Cetus and a member of the Local Group, notable for its low dust content and use in calibrating the cosmic distance scale.
-
C.
NGC 6205
NGC 6205 is a bright, densely packed globular star cluster in the constellation Hercules, commonly known as the Great Hercules Cluster (M13).
-
D.
IC 2574
IC 2574 is a dwarf irregular galaxy in the constellation Ursa Major, notable for its active star formation and membership in the nearby M81 Group of galaxies.
-
E.
NGC 4725
NGC 4725 is a barred spiral galaxy in the constellation Coma Berenices, notable for having only one prominent spiral arm.
- F. None of above. chosen
Statements (42)
| Predicate | Object |
|---|---|
| instanceOf |
deep-sky object
ⓘ
open star cluster ⓘ star cluster ⓘ |
| age |
moderately aged
ⓘ
~800 million years ⓘ |
| angularSize | ~52 arcminutes ⓘ |
| apparentBrightness | naked-eye under dark skies ⓘ |
| apparentMagnitudeV | 4.6 ⓘ |
| appearsAs | rich star field ⓘ |
| approximateNumberOfMemberStars | >100 ⓘ |
| bestSeenFrom | Northern Hemisphere NERFINISHED ⓘ |
| catalogue | Index Catalogue NERFINISHED ⓘ |
| cataloguedIn | Lund Catalogue of Open Clusters NERFINISHED ⓘ |
| constellation | Serpens NERFINISHED ⓘ |
| contains |
G-type stars
ⓘ
K-type stars ⓘ red giant stars ⓘ |
| declination | +05° 27′ ⓘ |
| discoveredBy | William Herschel NERFINISHED ⓘ |
| discoveryYear | 1791 ⓘ |
| distanceFromEarth |
~1300 light-years
ⓘ
~400 parsecs ⓘ |
| evolutionaryStatus | intermediate-age open cluster ⓘ |
| galacticComponent | Galactic disk ⓘ |
| galacticLatitude | +05° ⓘ |
| galacticLongitude | 36° ⓘ |
| hasTrumplerClass | II 1 m ⓘ |
| locatedIn |
Milky Way
ⓘ
Serpens Cauda NERFINISHED ⓘ |
| metallicity | near-solar ⓘ |
| nearbyObjectOnSky | NGC 6633 NERFINISHED ⓘ |
| observedAs | large, bright open cluster ⓘ |
| otherDesignation |
C 1835+054
NERFINISHED
ⓘ
Melotte 210 NERFINISHED ⓘ OCL 65 ⓘ |
| rightAscension | 18h 38m ⓘ |
| seasonalVisibility | summer ⓘ |
| stellarPopulation | intermediate-age stars ⓘ |
| usedFor |
studies of Galactic disk structure
ⓘ
studies of stellar evolution ⓘ |
| visibleIn |
binoculars
ⓘ
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: IC 4756 Description of subject: IC 4756 is a large, bright open star cluster in the constellation Serpens, often observed as a rich field of moderately aged stars.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.