IC 4665
E480233
IC 4665 is a bright, young open star cluster located in the constellation Ophiuchus, visible with binoculars or small telescopes.
All labels observed (1)
| Label | Occurrences |
|---|---|
| IC 4665 canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4911781 — 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 4665 Context triple: [Ophiuchus, containsDeepSkyObject, IC 4665]
-
A.
IC 4756
IC 4756 is a large, bright open star cluster in the constellation Serpens, often observed as a rich field of moderately aged stars.
-
B.
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.
-
C.
IC 4715
IC 4715 is a bright, star-rich region of the Milky Way in the constellation Sagittarius, commonly known as the Small Sagittarius Star Cloud.
-
D.
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.
-
E.
IC 1590
IC 1590 is a young open star cluster embedded within the emission nebula NGC 281 in the constellation Cassiopeia, notable for its role in illuminating and shaping the surrounding gas and dust.
- 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 4665 Target entity description: IC 4665 is a bright, young open star cluster located in the constellation Ophiuchus, visible with binoculars or small telescopes.
-
A.
IC 4756
IC 4756 is a large, bright open star cluster in the constellation Serpens, often observed as a rich field of moderately aged stars.
-
B.
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.
-
C.
IC 4715
IC 4715 is a bright, star-rich region of the Milky Way in the constellation Sagittarius, commonly known as the Small Sagittarius Star Cloud.
-
D.
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.
-
E.
IC 1590
IC 1590 is a young open star cluster embedded within the emission nebula NGC 281 in the constellation Cassiopeia, notable for its role in illuminating and shaping the surrounding gas and dust.
- F. None of above. chosen
Statements (33)
| Predicate | Object |
|---|---|
| instanceOf |
astronomical object
ⓘ
open star cluster ⓘ |
| age | ~30–40 million years ⓘ |
| angularSize | ~70 arcminutes ⓘ |
| apparentMagnitudeV | 4.2 ⓘ |
| bestSeenFromHemisphere | Northern Hemisphere NERFINISHED ⓘ |
| bestSeenIn | summer ⓘ |
| catalogCode | IC 4665 NERFINISHED ⓘ |
| declination | +05° 43′ ⓘ |
| discoveredBy | Philippe Loys de Chéseaux NERFINISHED ⓘ |
| discoveryYear | 1745 ⓘ |
| distanceFromEarth |
~1400 light-years
ⓘ
~430 parsecs ⓘ |
| galacticLatitude | +17.3° ⓘ |
| galacticLongitude | 30.6° ⓘ |
| hasApproximateMemberCount | ~50–60 bright members ⓘ |
| hasIntegratedSpectralType | approximately F-type ⓘ |
| hasNotableProperty |
easily resolved into individual stars
ⓘ
relatively low central concentration ⓘ young open cluster used for stellar evolution studies ⓘ |
| hasStellarPopulation | young stars ⓘ |
| includedInCatalogue |
Collinder catalogue
NERFINISHED
ⓘ
Index Catalogue NERFINISHED ⓘ Melotte catalogue NERFINISHED ⓘ |
| liesNear | Beta Ophiuchi NERFINISHED ⓘ |
| locatedIn | Milky Way ⓘ |
| locatedInConstellation | Ophiuchus NERFINISHED ⓘ |
| observationalClass | loose open cluster ⓘ |
| otherDesignation |
Collinder 349
NERFINISHED
ⓘ
Melotte 179 NERFINISHED ⓘ |
| rightAscension | 17h 46m ⓘ |
| visibleWith |
binoculars
ⓘ
small telescope ⓘ |
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 4665 Description of subject: IC 4665 is a bright, young open star cluster located in the constellation Ophiuchus, visible with binoculars or small telescopes.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.