open cluster IC 1848
E521866
Open cluster IC 1848 is a young, loose grouping of stars embedded within the Soul Nebula in the constellation Cassiopeia, notable for its role in illuminating and shaping the surrounding emission nebula.
All labels observed (3)
| Label | Occurrences |
|---|---|
| IC 1848 star cluster | 1 |
| open cluster IC 1848 canonical | 1 |
| open cluster IC 1848 (embedded) | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5469862 — 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: open cluster IC 1848 Context triple: [IC 1848, associatedWith, open cluster IC 1848]
-
A.
open cluster IC 1805
Open cluster IC 1805 is a young, massive star cluster in the constellation Cassiopeia that illuminates and shapes the surrounding Heart Nebula with its hot, luminous stars.
-
B.
NGC 1818
NGC 1818 is a young, massive star cluster located in the Large Magellanic Cloud, notable for its dense population of hot, blue stars.
-
C.
IC 1805
IC 1805 is a large emission nebula and active star-forming region in the constellation Cassiopeia, notable for its heart-shaped appearance and young, massive star cluster.
-
D.
NGC 1850
NGC 1850 is a massive, young star cluster in the Large Magellanic Cloud notable for its unusual structure and intense star-forming activity.
-
E.
IC 348
IC 348 is a young, nearby star-forming cluster rich in pre-main-sequence stars, located within the Perseus constellation.
- 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: open cluster IC 1848 Target entity description: Open cluster IC 1848 is a young, loose grouping of stars embedded within the Soul Nebula in the constellation Cassiopeia, notable for its role in illuminating and shaping the surrounding emission nebula.
-
A.
open cluster IC 1805
Open cluster IC 1805 is a young, massive star cluster in the constellation Cassiopeia that illuminates and shapes the surrounding Heart Nebula with its hot, luminous stars.
-
B.
NGC 1818
NGC 1818 is a young, massive star cluster located in the Large Magellanic Cloud, notable for its dense population of hot, blue stars.
-
C.
IC 1805
IC 1805 is a large emission nebula and active star-forming region in the constellation Cassiopeia, notable for its heart-shaped appearance and young, massive star cluster.
-
D.
NGC 1850
NGC 1850 is a massive, young star cluster in the Large Magellanic Cloud notable for its unusual structure and intense star-forming activity.
-
E.
IC 348
IC 348 is a young, nearby star-forming cluster rich in pre-main-sequence stars, located within the Perseus constellation.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf | open cluster ⓘ |
| age_Myr | ~1–3 ⓘ |
| apparentAngularSize_arcmin | ~50 ⓘ |
| approximateDistanceFromEarth_kpc | 1.8 ⓘ |
| approximateDistanceFromEarth_ly | 6000 ⓘ |
| associatedWith |
H II region
ⓘ
infrared sources ⓘ molecular clouds ⓘ young stellar objects ⓘ |
| associatedWithNebula | Soul Nebula ⓘ |
| bestObservationSeason |
northern autumn
ⓘ
northern winter ⓘ |
| bestSeenFrom | Northern mid-latitudes ⓘ |
| catalog | Index Catalogue ⓘ |
| catalogType | deep-sky object ⓘ |
| celestialHemisphere | Northern sky ⓘ |
| clusterConcentration | loose ⓘ |
| clusterType | young open cluster ⓘ |
| contains |
Herbig Ae/Be stars
ⓘ
T Tauri stars ⓘ massive OB stars ⓘ pre-main-sequence stars ⓘ |
| declinationEpochJ2000 | +60° ⓘ |
| discoveredBy | Edward Emerson Barnard ⓘ |
| drives | ionization fronts in Soul Nebula ⓘ |
| embeddedIn | Soul Nebula ⓘ |
| environment |
giant molecular cloud complex
ⓘ
star-forming region ⓘ |
| galacticRegion | Perseus Arm ⓘ |
| isPartOf | Milky Way ⓘ |
| locatedIn |
Cassiopeia OB association region
ⓘ
linked to:
Cassiopeia OB associations
|
| locatedInConstellation | Cassiopeia ⓘ |
| nearbyObjectOnSky |
Double Cluster
ⓘ
Heart Nebula ⓘ IC 1805 ⓘ |
| observedInWavelength |
infrared
ⓘ
optical ⓘ radio ⓘ |
| partOfComplex |
Heart and Soul Nebula complex
ⓘ
linked to:
Heart Nebula
|
| photographicAppearance | loose grouping of stars ⓘ |
| rightAscensionEpochJ2000 | 02h 51m ⓘ |
| roleInNebula |
illuminates surrounding emission nebula
ⓘ
shapes surrounding emission nebula ⓘ |
| stellarPopulation | young stars ⓘ |
| triggers | sequential star formation in surrounding clouds ⓘ |
| visibleWith |
binoculars under dark skies
ⓘ
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: open cluster IC 1848 Description of subject: Open cluster IC 1848 is a young, loose grouping of stars embedded within the Soul Nebula in the constellation Cassiopeia, notable for its role in illuminating and shaping the surrounding emission nebula.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject linked to:
IC 1848 (Soul Nebula)
linked to: open cluster IC 1848
linked to: open cluster IC 1848