Seagull Nebula
E555752
The Seagull Nebula is a large, bird-shaped emission nebula and star-forming region located along the border of the constellations Monoceros and Canis Major.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Seagull Nebula canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5775495 — 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: Seagull Nebula Context triple: [Monoceros, contains, Seagull Nebula]
-
A.
Pelican Nebula
The Pelican Nebula is a bright emission nebula in the constellation Cygnus, notable for its bird-like shape and active star-forming regions.
-
B.
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.
-
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.
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.
-
E.
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.
- 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: Seagull Nebula Target entity description: The Seagull Nebula is a large, bird-shaped emission nebula and star-forming region located along the border of the constellations Monoceros and Canis Major.
-
A.
Pelican Nebula
The Pelican Nebula is a bright emission nebula in the constellation Cygnus, notable for its bird-like shape and active star-forming regions.
-
B.
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.
-
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.
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.
-
E.
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.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
H II region
ⓘ
astronomical object ⓘ emission nebula ⓘ |
| alsoKnownAs |
IC 2177
NERFINISHED
ⓘ
Sh 2-292 NERFINISHED ⓘ |
| angularSize | about 2.5 degrees ⓘ |
| apparentMagnitude | about 5.9 ⓘ |
| associatedWith | Galactic plane ⓘ |
| bestSeenAt | dark skies ⓘ |
| bestSeenIn | winter months ⓘ |
| catalog |
Index Catalogue
NERFINISHED
ⓘ
Sharpless catalog NERFINISHED ⓘ |
| contains |
dark nebulae
ⓘ
massive OB stars ⓘ open cluster NGC 2335 NERFINISHED ⓘ open cluster NGC 2343 NERFINISHED ⓘ reflection nebulae ⓘ young stellar objects ⓘ |
| declination | -10° 20′ ⓘ |
| discoveredBy | Isaac Roberts NERFINISHED ⓘ |
| discoveryYear | 1893 ⓘ |
| distanceFromEarth |
3700 light-years
ⓘ
approximately 1.1 kiloparsecs ⓘ |
| dominantEmissionLine | H-alpha ⓘ |
| galacticLatitude | -2.3 degrees ⓘ |
| galacticLongitude | 224.7 degrees ⓘ |
| hasComponent |
Sh 2-292
NERFINISHED
ⓘ
Sh 2-293 NERFINISHED ⓘ Sh 2-294 NERFINISHED ⓘ |
| ionizedBy | hot young stars ⓘ |
| liesOnBorderOf |
Canis Major
NERFINISHED
ⓘ
Monoceros NERFINISHED ⓘ |
| locatedIn | Orion Arm NERFINISHED ⓘ |
| locatedInConstellation |
Canis Major
NERFINISHED
ⓘ
Monoceros NERFINISHED ⓘ |
| observedIn |
infrared wavelengths
ⓘ
optical wavelengths ⓘ radio wavelengths ⓘ |
| partOf | Milky Way NERFINISHED ⓘ |
| regionType | massive star-forming complex ⓘ |
| requires | wide-field telescope for full extent ⓘ |
| rightAscension | 06h 16m ⓘ |
| shapeDescribedAs |
bird-shaped
ⓘ
seagull-shaped ⓘ |
| visibleFrom |
Northern Hemisphere
NERFINISHED
ⓘ
Southern Hemisphere NERFINISHED ⓘ |
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: Seagull Nebula Description of subject: The Seagull Nebula is a large, bird-shaped emission nebula and star-forming region located along the border of the constellations Monoceros and Canis Major.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.