IC 1795
E523600
IC 1795 is a bright star-forming nebula in the constellation Cassiopeia, located near the Heart Nebula (IC 1805) within the Perseus Arm of the Milky Way.
All labels observed (1)
| Label | Occurrences |
|---|---|
| IC 1795 canonical | 3 |
How this entity was disambiguated
This entity first appeared as the object of triple T5466984 — 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 1795 Context triple: [IC 1805, associatedWith, IC 1795]
-
A.
IC 10
IC 10 is a nearby irregular starburst galaxy notable for its intense star formation and membership in the Local Group.
-
B.
NGC 4622
NGC 4622 is an unusual spiral galaxy notable for its rare leading spiral arms and distinctive ring-like structure, located in the constellation Centaurus.
-
C.
NGC 3372
NGC 3372 is a massive, bright star-forming nebula in the Carina constellation, famous for housing the unstable supergiant star Eta Carinae and extensive regions of ionized gas and dust.
-
D.
NGC 5253
NGC 5253 is a nearby blue compact dwarf galaxy in the constellation Centaurus, notable for its intense starburst activity and young massive star clusters.
-
E.
NGC 7319
NGC 7319 is a barred spiral galaxy in the constellation Pegasus, notable as a member of the interacting galaxy group known as Stephan's Quintet.
- 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 1795 Target entity description: IC 1795 is a bright star-forming nebula in the constellation Cassiopeia, located near the Heart Nebula (IC 1805) within the Perseus Arm of the Milky Way.
-
A.
IC 10
IC 10 is a nearby irregular starburst galaxy notable for its intense star formation and membership in the Local Group.
-
B.
NGC 4622
NGC 4622 is an unusual spiral galaxy notable for its rare leading spiral arms and distinctive ring-like structure, located in the constellation Centaurus.
-
C.
NGC 3372
NGC 3372 is a massive, bright star-forming nebula in the Carina constellation, famous for housing the unstable supergiant star Eta Carinae and extensive regions of ionized gas and dust.
-
D.
NGC 5253
NGC 5253 is a nearby blue compact dwarf galaxy in the constellation Centaurus, notable for its intense starburst activity and young massive star clusters.
-
E.
NGC 7319
NGC 7319 is a barred spiral galaxy in the constellation Pegasus, notable as a member of the interacting galaxy group known as Stephan's Quintet.
- F. None of above. chosen
Statements (43)
| Predicate | Object |
|---|---|
| instanceOf |
astronomical object
ⓘ
emission nebula ⓘ star-forming region ⓘ |
| angularSize | approximately 10 arcminutes ⓘ |
| associatedWith | Perseus spiral arm star formation ⓘ |
| belongsToGalaxy | Milky Way ⓘ |
| catalogCode | IC 1795 ⓘ |
| contains |
embedded star cluster
ⓘ
massive young stars ⓘ young stellar objects ⓘ |
| discoveredInCatalog | Index Catalogue ⓘ |
| distanceFromEarth |
approximately 1.8 kiloparsecs
ⓘ
approximately 6000 light-years ⓘ |
| emits | hydrogen-alpha radiation ⓘ |
| environment |
rich in interstellar dust
ⓘ
rich in molecular gas ⓘ |
| hasColor | reddish ⓘ |
| hasPhysicalProcess |
ionization by massive stars
ⓘ
molecular cloud collapse ⓘ ongoing star formation ⓘ |
| hasStructure |
dust lanes
ⓘ
filamentary gas clouds ⓘ |
| ionizingSource | massive O-type stars ⓘ |
| isPartOf |
Cassiopeia star-forming complex
ⓘ
linked to:
NGC 281 star-forming complex
|
| locatedIn |
Milky Way
ⓘ
Perseus Arm ⓘ |
| locatedInConstellation | Cassiopeia ⓘ |
| near |
Heart Nebula
ⓘ
IC 1805 ⓘ |
| observedInWavelength |
infrared
ⓘ
optical ⓘ radio ⓘ |
| otherDesignation |
Ced 12
ⓘ
LBN 640 ⓘ NGC 896 ⓘ Sh2-190 ⓘ Sharpless 2-190 ⓘ W3 ⓘ |
| partOf |
Cassiopeia OB association
ⓘ
linked to:
Cassiopeia OB associations
W3/W4/W5 complex ⓘ |
| regionType | giant molecular cloud complex ⓘ |
| skyLocation | northern sky ⓘ |
| spectralType | H II emission ⓘ |
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 1795 Description of subject: IC 1795 is a bright star-forming nebula in the constellation Cassiopeia, located near the Heart Nebula (IC 1805) within the Perseus Arm of the Milky Way.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.