Cr 189
E572603
Cr 189 is an open star cluster in the constellation Cancer, better known as the Beehive Cluster or Praesepe, one of the nearest and most prominent clusters visible to the naked eye.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Cr 189 canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T6175176 — 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: Cr 189 Context triple: [Beehive Cluster, alsoKnownAs, Cr 189]
-
A.
Cru
Cru is the official three-letter IAU abbreviation for the southern constellation Crux, also known as the Southern Cross.
-
B.
CrA
CrA is the standard astronomical abbreviation for Corona Australis, a small southern constellation whose name means "the Southern Crown."
-
C.
C-10
C-10 is a commuter rail line within the Cercanías Madrid network that connects central Madrid with its surrounding metropolitan areas.
-
D.
CRUI
CRUI is the Conference of Italian University Rectors, a national association representing and coordinating the leadership of Italian universities.
-
E.
C-9
C-9 is a mountain railway line of Madrid’s Cercanías commuter rail network that connects the city with the Sierra de Guadarrama, including the Puerto de Navacerrada and Cotos areas.
- 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: Cr 189 Target entity description: Cr 189 is an open star cluster in the constellation Cancer, better known as the Beehive Cluster or Praesepe, one of the nearest and most prominent clusters visible to the naked eye.
-
A.
Cru
Cru is the official three-letter IAU abbreviation for the southern constellation Crux, also known as the Southern Cross.
-
B.
CrA
CrA is the standard astronomical abbreviation for Corona Australis, a small southern constellation whose name means "the Southern Crown."
-
C.
C-10
C-10 is a commuter rail line within the Cercanías Madrid network that connects central Madrid with its surrounding metropolitan areas.
-
D.
CRUI
CRUI is the Conference of Italian University Rectors, a national association representing and coordinating the leadership of Italian universities.
-
E.
C-9
C-9 is a mountain railway line of Madrid’s Cercanías commuter rail network that connects the city with the Sierra de Guadarrama, including the Puerto de Navacerrada and Cotos areas.
- F. None of above. chosen
Statements (44)
| Predicate | Object |
|---|---|
| instanceOf | open star cluster ⓘ |
| age | about 600 million years ⓘ |
| alsoKnownAs |
Beehive Cluster
NERFINISHED
ⓘ
M44 ⓘ Messier 44 NERFINISHED ⓘ NGC 2632 NERFINISHED ⓘ Praesepe NERFINISHED ⓘ |
| angularSize | 95 arcminutes ⓘ |
| apparentMagnitude | 3.7 ⓘ |
| apparentShape | loose cluster ⓘ |
| belongsToGalaxy | Milky Way NERFINISHED ⓘ |
| bestSeenFromHemisphere | Northern Hemisphere NERFINISHED ⓘ |
| catalog | Collinder catalogue NERFINISHED ⓘ |
| catalogNumber | 189 ⓘ |
| contains |
main-sequence stars
ⓘ
red giant stars ⓘ |
| containsNumberOfStars | several hundred ⓘ |
| declination | +19° 40′ ⓘ |
| discoveryStatus | known since antiquity ⓘ |
| distanceFromEarth |
about 180 parsecs
ⓘ
about 590 light-years ⓘ |
| galacticPopulation | open cluster population ⓘ |
| hasMessierNumber | 44 ⓘ |
| hasNGCNumber | 2632 ⓘ |
| hasProperMotion | true ⓘ |
| isGravitationallyBound | true ⓘ |
| isNearbyCluster | true ⓘ |
| isOneOfMostProminentOpenClusters | true ⓘ |
| isOneOfNearestOpenClusters | true ⓘ |
| isProminentCluster | true ⓘ |
| isTargetFor |
exoplanet searches
ⓘ
stellar evolution studies ⓘ |
| isUsedAs |
benchmark for stellar models
ⓘ
distance calibration cluster ⓘ |
| isVisibleBestIn | spring ⓘ |
| liesNearEcliptic | true ⓘ |
| locatedInConstellation | Cancer NERFINISHED ⓘ |
| metallicity | near-solar ⓘ |
| observedBy |
Charles Messier
NERFINISHED
ⓘ
Galileo Galilei NERFINISHED ⓘ |
| rightAscension | 08h 40m ⓘ |
| spectralTypeDominant |
F-type stars
ⓘ
G-type stars ⓘ |
| visibleToNakedEye | true ⓘ |
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: Cr 189 Description of subject: Cr 189 is an open star cluster in the constellation Cancer, better known as the Beehive Cluster or Praesepe, one of the nearest and most prominent clusters visible to the naked eye.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.