Trumpler II 3 m
E753981
Trumpler II 3 m is a classification code indicating that the Jewel Box cluster is a moderately rich, well-detached open star cluster of intermediate concentration with medium brightness range.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Trumpler II 3 m canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T8717205 — 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: Trumpler II 3 m Context triple: [Jewel Box cluster, classification, Trumpler II 3 m]
-
A.
Trumpler 14
Trumpler 14 is a very young, massive open star cluster in the Carina Nebula, notable for containing some of the most luminous and hottest known stars in the Milky Way.
-
B.
Trumpler 15
Trumpler 15 is a young, compact open star cluster located within the Carina Nebula, notable for its massive, hot stars and role in the region’s intense stellar activity.
-
C.
Trumpler 16
Trumpler 16 is a massive young star cluster in the Carina Nebula, notable for hosting some of the most luminous and massive known stars, including Eta Carinae.
-
D.
Herschel 36
Herschel 36 is a young, massive O-type star that illuminates and powers much of the Lagoon Nebula’s bright central region.
-
E.
Sharpless 2-275
Sharpless 2-275 is a large, circular emission nebula in the constellation Monoceros, notable for its active star-forming region and striking rose-like appearance.
- 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: Trumpler II 3 m Target entity description: Trumpler II 3 m is a classification code indicating that the Jewel Box cluster is a moderately rich, well-detached open star cluster of intermediate concentration with medium brightness range.
-
A.
Trumpler 14
Trumpler 14 is a very young, massive open star cluster in the Carina Nebula, notable for containing some of the most luminous and hottest known stars in the Milky Way.
-
B.
Trumpler 15
Trumpler 15 is a young, compact open star cluster located within the Carina Nebula, notable for its massive, hot stars and role in the region’s intense stellar activity.
-
C.
Trumpler 16
Trumpler 16 is a massive young star cluster in the Carina Nebula, notable for hosting some of the most luminous and massive known stars, including Eta Carinae.
-
D.
Herschel 36
Herschel 36 is a young, massive O-type star that illuminates and powers much of the Lagoon Nebula’s bright central region.
-
E.
Sharpless 2-275
Sharpless 2-275 is a large, circular emission nebula in the constellation Monoceros, notable for its active star-forming region and striking rose-like appearance.
- F. None of above. chosen
Statements (24)
| Predicate | Object |
|---|---|
| instanceOf |
Trumpler classification code
ⓘ
star cluster classification ⓘ |
| appliesTo |
Jewel Box cluster
ⓘ
NGC 4755 ⓘ |
| appliesToObjectType | Galactic open cluster ⓘ |
| brightnessRangeClass | m ⓘ |
| brightnessRangeDescription | medium brightness range ⓘ |
| classificationSystem |
Trumpler classification
ⓘ
linked to:
Trumpler 2.2R
|
| clusterType | open star cluster ⓘ |
| component |
Arabic numeral 3
ⓘ
Roman numeral II ⓘ letter m ⓘ |
| concentrationClass | 3 ⓘ |
| concentrationDescription | intermediate concentration ⓘ |
| describesProperty |
cluster brightness range
ⓘ
cluster concentration ⓘ cluster richness ⓘ |
| detachmentDescription | well-detached from surrounding star field ⓘ |
| domain | astronomy ⓘ |
| notationType | alphanumeric code ⓘ |
| relatedTo | Robert Julius Trumpler ⓘ |
| richnessClass | II ⓘ |
| richnessDescription | moderately rich ⓘ |
| usedFor | morphological classification of open clusters ⓘ |
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: Trumpler II 3 m Description of subject: Trumpler II 3 m is a classification code indicating that the Jewel Box cluster is a moderately rich, well-detached open star cluster of intermediate concentration with medium brightness range.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.