IC 1848
E524138
IC 1848, also known as the Soul Nebula, is a large emission nebula and star-forming region in the constellation Cassiopeia, often paired with the nearby Heart Nebula (IC 1805).
All labels observed (2)
| Label | Occurrences |
|---|---|
| IC 1848 canonical | 3 |
| IC 1848 nebular complex | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5466985 — 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 1848 Context triple: [IC 1805, associatedWith, IC 1848]
-
A.
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.
-
B.
IC 1613
IC 1613 is a dwarf irregular galaxy in the constellation Cetus and a member of the Local Group, notable for its low dust content and use in calibrating the cosmic distance scale.
-
C.
IC 1590
IC 1590 is a young open star cluster embedded within the emission nebula NGC 281 in the constellation Cassiopeia, notable for its role in illuminating and shaping the surrounding gas and dust.
-
D.
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.
-
E.
IC 4665
IC 4665 is a bright, young open star cluster located in the constellation Ophiuchus, visible with binoculars or small telescopes.
- 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 1848 Target entity description: IC 1848, also known as the Soul Nebula, is a large emission nebula and star-forming region in the constellation Cassiopeia, often paired with the nearby Heart Nebula (IC 1805).
-
A.
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.
-
B.
IC 1613
IC 1613 is a dwarf irregular galaxy in the constellation Cetus and a member of the Local Group, notable for its low dust content and use in calibrating the cosmic distance scale.
-
C.
IC 1590
IC 1590 is a young open star cluster embedded within the emission nebula NGC 281 in the constellation Cassiopeia, notable for its role in illuminating and shaping the surrounding gas and dust.
-
D.
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.
-
E.
IC 4665
IC 4665 is a bright, young open star cluster located in the constellation Ophiuchus, visible with binoculars or small telescopes.
- F. None of above. chosen
Statements (45)
| Predicate | Object |
|---|---|
| instanceOf |
H II region
ⓘ
emission nebula ⓘ nebula ⓘ |
| alsoKnownAs |
Soul Nebula
ⓘ
W5 ⓘ Westerhout 5 ⓘ
linked to:
W5 H II region
|
| angularSize | about 150 arcminutes ⓘ |
| apparentConstellation | Cassiopeia ⓘ |
| associatedWith | IC 1805 ⓘ |
| bestObservedIn |
autumn
ⓘ
winter ⓘ |
| bestSeenFrom | Northern Hemisphere ⓘ |
| catalog | Index Catalogue ⓘ |
| contains |
dark dust lanes
ⓘ
embedded protostars ⓘ massive OB stars ⓘ molecular clouds ⓘ stellar nurseries ⓘ young star clusters ⓘ |
| declination | +60° 26′ ⓘ |
| discoveredInCatalogue |
Index Catalogue (IC)
ⓘ
linked to:
Index Catalogue
|
| distanceFromEarth |
about 1.8 kiloparsecs
ⓘ
about 6000 light-years ⓘ |
| emitsStronglyIn |
H-alpha
ⓘ
infrared ⓘ |
| excitedBy | ultraviolet radiation from massive stars ⓘ |
| galacticLatitude | about +0.9° ⓘ |
| galacticLongitude | about 137° ⓘ |
| hasNearbyObject |
open cluster IC 1848 (embedded)
ⓘ
linked to:
open cluster IC 1848
|
| hasShape | resembling a human embryo or soul in images ⓘ |
| isRegionOf | triggered star formation by stellar feedback ⓘ |
| isTargetFor |
amateur astronomers
ⓘ
astrophotography ⓘ |
| isTypeOf |
diffuse nebula
ⓘ
ionized gas region ⓘ |
| locatedIn | Milky Way ⓘ |
| locatedInConstellation | Cassiopeia ⓘ |
| near | IC 1805 ⓘ |
| observedIn |
infrared wavelengths
ⓘ
optical wavelengths ⓘ radio wavelengths ⓘ |
| partOf |
Heart and Soul Nebula complex
ⓘ
linked to:
Heart Nebula
Perseus Arm ⓘ |
| regionOf | active star formation ⓘ |
| rightAscension | 02h 51m ⓘ |
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 1848 Description of subject: IC 1848, also known as the Soul Nebula, is a large emission nebula and star-forming region in the constellation Cassiopeia, often paired with the nearby Heart Nebula (IC 1805).
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject linked to:
IC 1805 (Heart Nebula)
linked to: IC 1848
subject linked to:
open cluster IC 1805
subject linked to:
IC II (second Index Catalogue)