IC 4725
E482447
IC 4725 is an open star cluster in the constellation Sagittarius, better known as Messier 25, visible with binoculars or small telescopes.
All labels observed (1)
| Label | Occurrences |
|---|---|
| IC 4725 canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4959136 — 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 4725 Context triple: [Messier 25, otherName, IC 4725]
-
A.
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.
-
B.
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.
-
C.
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.
-
D.
IC 4665
IC 4665 is a bright, young open star cluster located in the constellation Ophiuchus, visible with binoculars or small telescopes.
-
E.
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.
- 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 4725 Target entity description: IC 4725 is an open star cluster in the constellation Sagittarius, better known as Messier 25, visible with binoculars or small telescopes.
-
A.
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.
-
B.
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.
-
C.
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.
-
D.
IC 4665
IC 4665 is a bright, young open star cluster located in the constellation Ophiuchus, visible with binoculars or small telescopes.
-
E.
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.
- F. None of above. chosen
Statements (36)
| Predicate | Object |
|---|---|
| instanceOf |
Messier object
ⓘ
open star cluster ⓘ |
| age | ~90 million years ⓘ |
| angularSize | 32 arcminutes ⓘ |
| apparentBrightness | naked-eye visible in dark skies ⓘ |
| apparentMagnitudeV | 4.6 ⓘ |
| bestSeenFromHemisphere | Southern Hemisphere NERFINISHED ⓘ |
| bestSeenInMonth | July ⓘ |
| catalogCode |
IC 4725
NERFINISHED
ⓘ
M 25 ⓘ |
| catalogNumberInMessier | 25 ⓘ |
| contains | dozens of member stars ⓘ |
| containsCepheidVariables | true ⓘ |
| containsVariableStars | true ⓘ |
| declination | −19° 15′ ⓘ |
| discoveredBy | Philippe Loys de Chéseaux NERFINISHED ⓘ |
| discoveryYear | 1745 ⓘ |
| distanceFromEarth |
~2000 light-years
ⓘ
~600 parsecs ⓘ |
| galacticLatitude | −5.71° ⓘ |
| galacticLongitude | 13.94° ⓘ |
| hasAlternativeName |
M25
ⓘ
Messier 25 NERFINISHED ⓘ |
| hasBrightestStarsMagnitude | ~8 ⓘ |
| hasTrumplerClassification | II,3,m ⓘ |
| includedInCatalog |
Index Catalogue
NERFINISHED
ⓘ
Messier catalogue NERFINISHED ⓘ |
| locatedIn |
Milky Way
ⓘ
Sagittarius OB1 association NERFINISHED ⓘ |
| locatedInConstellation | Sagittarius NERFINISHED ⓘ |
| locatedNear | Galactic center direction ⓘ |
| observedInWavelength | optical ⓘ |
| partOf | Sagittarius constellation region rich in star fields ⓘ |
| rightAscension | 18h 31m ⓘ |
| 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 4725 Description of subject: IC 4725 is an open star cluster in the constellation Sagittarius, better known as Messier 25, visible with binoculars or small telescopes.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.