Collinder 140
E508259
Collinder 140 is an open star cluster located in the constellation Canis Major, notable for its relatively bright, young stars.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Collinder 140 canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5259964 — 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: Collinder 140 Context triple: [Canis Major, contains, Collinder 140]
-
A.
Collinder 121
Collinder 121 is a nearby open star cluster and stellar association in the constellation Canis Major, notable for its young, massive stars and role in studies of local star formation.
-
B.
Caldwell 14
Caldwell 14 is an open star cluster in the constellation Perseus, forming part of the famous Double Cluster visible to the naked eye in dark skies.
-
C.
Collinder 228
Collinder 228 is an open star cluster embedded in the Carina Nebula, notable for its young, massive stars that help illuminate and shape the surrounding gas and dust.
-
D.
Collinder 232
Collinder 232 is an open star cluster located within the Carina Nebula in the constellation Carina.
-
E.
Sharpless 45
Sharpless 45 is an emission nebula in the constellation Sagittarius, better known as the Omega Nebula, notable for its bright star-forming regions and distinctive swan-like shape.
- 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: Collinder 140 Target entity description: Collinder 140 is an open star cluster located in the constellation Canis Major, notable for its relatively bright, young stars.
-
A.
Collinder 121
Collinder 121 is a nearby open star cluster and stellar association in the constellation Canis Major, notable for its young, massive stars and role in studies of local star formation.
-
B.
Caldwell 14
Caldwell 14 is an open star cluster in the constellation Perseus, forming part of the famous Double Cluster visible to the naked eye in dark skies.
-
C.
Collinder 228
Collinder 228 is an open star cluster embedded in the Carina Nebula, notable for its young, massive stars that help illuminate and shape the surrounding gas and dust.
-
D.
Collinder 232
Collinder 232 is an open star cluster located within the Carina Nebula in the constellation Carina.
-
E.
Sharpless 45
Sharpless 45 is an emission nebula in the constellation Sagittarius, better known as the Omega Nebula, notable for its bright star-forming regions and distinctive swan-like shape.
- F. None of above. chosen
Statements (40)
| Predicate | Object |
|---|---|
| instanceOf | open star cluster ⓘ |
| age_Myr | ~20 ⓘ |
| angularSize_arcmin | ~60 ⓘ |
| apparentMagnitudeV | ~4.6 ⓘ |
| appearsNear |
Canis Major OB1 association
NERFINISHED
ⓘ
Sirius NERFINISHED ⓘ |
| bestSeenInMonth |
February
ⓘ
January ⓘ March ⓘ |
| canBeObservedWith |
binoculars
ⓘ
small telescope ⓘ |
| catalog | Collinder catalogue NERFINISHED ⓘ |
| catalogCode | Cr 140 NERFINISHED ⓘ |
| contains |
bright stars
ⓘ
young stars ⓘ |
| declination | −32° ⓘ |
| discoveredBy | Per Collinder NERFINISHED ⓘ |
| distanceFromEarth_ly | ~1000 ⓘ |
| distanceFromEarth_pc | ~300 ⓘ |
| epoch | J2000 ⓘ |
| galacticPopulation | Population I ⓘ |
| hasColorExcessEBV | low ⓘ |
| hasMemberType |
A-type stars
ⓘ
B-type stars ⓘ F-type stars ⓘ |
| hasRadialVelocity | small positive ⓘ |
| hasStellarDensity | low to moderate ⓘ |
| hasTrumplerClass | III3m ⓘ |
| interstellarReddening | small ⓘ |
| isGravitationallyBoundSystem | true ⓘ |
| isNearbyOpenCluster | true ⓘ |
| isPartOf | local spiral structure of the Milky Way ⓘ |
| isYoungCluster | true ⓘ |
| locatedIn |
Milky Way
ⓘ
Orion Arm NERFINISHED ⓘ |
| locatedInConstellation | Canis Major NERFINISHED ⓘ |
| observationalClass | galactic open cluster ⓘ |
| observedIn | optical wavelength ⓘ |
| rightAscension | 07h 00m ⓘ |
| visibleIn | Southern Hemisphere NERFINISHED ⓘ |
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: Collinder 140 Description of subject: Collinder 140 is an open star cluster located in the constellation Canis Major, notable for its relatively bright, young stars.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.