Pelican Nebula
E503270
The Pelican Nebula is a bright emission nebula in the constellation Cygnus, notable for its bird-like shape and active star-forming regions.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Pelican Nebula canonical | 6 |
How this entity was disambiguated
This entity first appeared as the object of triple T5060554 — 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: Pelican Nebula Context triple: [North America Nebula, nearbyObject, Pelican Nebula]
-
A.
Swan Nebula
The Swan Nebula, also known as M17 or the Omega Nebula, is a bright star-forming emission nebula in the constellation Sagittarius, rich in gas, dust, and young massive stars.
-
B.
Rosette Nebula
The Rosette Nebula is a large, circular emission nebula and active star-forming region located in the Milky Way, notable for its striking rose-like appearance in astrophotography.
-
C.
Heart Nebula
The Heart Nebula is a vast emission nebula in the constellation Cassiopeia, known for its heart-like shape and active star-forming regions.
-
D.
Eagle Nebula
The Eagle Nebula is a famous star-forming region in the Milky Way best known for the "Pillars of Creation," towering columns of gas and dust captured in iconic Hubble Space Telescope images.
-
E.
Horsehead Nebula
The Horsehead Nebula is a dark molecular cloud in the constellation Orion, famous for its distinctive horse-head shape silhouetted against a bright emission nebula.
- 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: Pelican Nebula Target entity description: The Pelican Nebula is a bright emission nebula in the constellation Cygnus, notable for its bird-like shape and active star-forming regions.
-
A.
Swan Nebula
The Swan Nebula, also known as M17 or the Omega Nebula, is a bright star-forming emission nebula in the constellation Sagittarius, rich in gas, dust, and young massive stars.
-
B.
Rosette Nebula
The Rosette Nebula is a large, circular emission nebula and active star-forming region located in the Milky Way, notable for its striking rose-like appearance in astrophotography.
-
C.
Heart Nebula
The Heart Nebula is a vast emission nebula in the constellation Cassiopeia, known for its heart-like shape and active star-forming regions.
-
D.
Eagle Nebula
The Eagle Nebula is a famous star-forming region in the Milky Way best known for the "Pillars of Creation," towering columns of gas and dust captured in iconic Hubble Space Telescope images.
-
E.
Horsehead Nebula
The Horsehead Nebula is a dark molecular cloud in the constellation Orion, famous for its distinctive horse-head shape silhouetted against a bright emission nebula.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
H II region
ⓘ
emission nebula ⓘ |
| angularSize | about 60 arcminutes ⓘ |
| apparentMagnitude | about 8.0 ⓘ |
| belongsTo | Milky Way ⓘ |
| bestSeenIn |
early autumn
ⓘ
summer ⓘ |
| cataloguedIn | Index Catalogue ⓘ |
| contains |
dark dust lanes
ⓘ
ionization fronts ⓘ molecular clouds ⓘ protostars ⓘ young stellar objects ⓘ |
| declination | +44° 25′ ⓘ |
| distanceFromEarth |
about 1800 light-years
ⓘ
about 550 parsecs ⓘ |
| dominantEmissionLine | H-alpha ⓘ |
| emits |
hydrogen recombination radiation
ⓘ
oxygen emission lines ⓘ sulfur emission lines ⓘ |
| hasAlternativeName |
IC 5067
ⓘ
linked to:
IC 5070
IC 5070 ⓘ |
| hasColor | reddish ⓘ |
| hasFeature |
bright ionization front ridge
ⓘ
embedded star clusters ⓘ pillars of gas and dust ⓘ |
| hasShape | pelican-like ⓘ |
| ionizedBy | nearby hot stars ⓘ |
| isRegionOf | active star formation ⓘ |
| isTargetFor |
amateur astronomers
ⓘ
astrophotography ⓘ professional star-formation studies ⓘ |
| locatedIn | Orion–Cygnus Arm ⓘ |
| locatedInConstellation | Cygnus ⓘ |
| near | North America Nebula ⓘ |
| observedIn |
infrared wavelengths
ⓘ
optical wavelengths ⓘ radio wavelengths ⓘ |
| partOf |
Cygnus molecular cloud complex
ⓘ
North America–Pelican Nebula complex ⓘ
linked to:
North America Nebula
|
| requiresForObservation |
dark skies
ⓘ
hydrogen-alpha filter ⓘ wide-field telescope ⓘ |
| rightAscension | 20h 51m ⓘ |
| separatedFrom | North America Nebula by a dark dust lane ⓘ |
| visibleFrom |
Northern Hemisphere
ⓘ
linked to:
Northern Celestial Hemisphere
|
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: Pelican Nebula Description of subject: The Pelican Nebula is a bright emission nebula in the constellation Cygnus, notable for its bird-like shape and active star-forming regions.
Referenced by (6)
Full triples — surface form annotated when it differs from this entity's canonical label.