NGC 7000
E504645
NGC 7000 is a large emission nebula in the constellation Cygnus whose shape strikingly resembles the continent of North America.
All labels observed (1)
| Label | Occurrences |
|---|---|
| NGC 7000 canonical | 3 |
How this entity was disambiguated
This entity first appeared as the object of triple T5060527 — 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: NGC 7000 Context triple: [North America Nebula, alsoKnownAs, NGC 7000]
-
A.
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.
-
B.
NGC 7317
NGC 7317 is an elliptical galaxy that forms part of Stephan's Quintet, a famous compact group of interacting galaxies in the constellation Pegasus.
-
C.
NGC 7320
NGC 7320 is a foreground spiral galaxy in the constellation Pegasus that appears as part of Stephan’s Quintet but is actually much closer to Earth than the other members.
-
D.
NGC 6705
NGC 6705 is a rich, compact open star cluster in the constellation Scutum, notable for its high stellar density and brightness, making it one of the most impressive open clusters in the Milky Way.
-
E.
NGC 6205
NGC 6205 is a bright, densely packed globular star cluster in the constellation Hercules, commonly known as the Great Hercules Cluster (M13).
- 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: NGC 7000 Target entity description: NGC 7000 is a large emission nebula in the constellation Cygnus whose shape strikingly resembles the continent of North America.
-
A.
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.
-
B.
NGC 7317
NGC 7317 is an elliptical galaxy that forms part of Stephan's Quintet, a famous compact group of interacting galaxies in the constellation Pegasus.
-
C.
NGC 7320
NGC 7320 is a foreground spiral galaxy in the constellation Pegasus that appears as part of Stephan’s Quintet but is actually much closer to Earth than the other members.
-
D.
NGC 6705
NGC 6705 is a rich, compact open star cluster in the constellation Scutum, notable for its high stellar density and brightness, making it one of the most impressive open clusters in the Milky Way.
-
E.
NGC 6205
NGC 6205 is a bright, densely packed globular star cluster in the constellation Hercules, commonly known as the Great Hercules Cluster (M13).
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
H II region
ⓘ
deep-sky object ⓘ emission nebula ⓘ |
| angularSize | about 120 arcminutes by 100 arcminutes ⓘ |
| apparentMagnitudeV | 4.0 ⓘ |
| associatedWith | Pelican Nebula NERFINISHED ⓘ |
| bestSeenInMonth |
August
ⓘ
July ⓘ |
| bestSeenInSeason | summer ⓘ |
| catalog | New General Catalogue NERFINISHED ⓘ |
| contains |
interstellar dust
ⓘ
interstellar gas ⓘ regions of active star formation ⓘ |
| declination | +44° 20′ ⓘ |
| discoveredBy | William Herschel NERFINISHED ⓘ |
| discoveryYear | 1786 ⓘ |
| distanceFromEarth |
about 2600 light-years
ⓘ
about 800 parsecs ⓘ |
| dominantEmissionLine | H-alpha ⓘ |
| equatorialCoordinateSystem | J2000 ⓘ |
| galacticLatitude | about -0.5 degrees ⓘ |
| galacticLongitude | about 85 degrees ⓘ |
| hasAlternativeDesignation | Sh2-117 NERFINISHED ⓘ |
| hasColor | reddish ⓘ |
| hasName | North America Nebula NERFINISHED ⓘ |
| hasNGCNumber | 7000 ⓘ |
| hasRegion |
Central America region
NERFINISHED
ⓘ
East Coast region NERFINISHED ⓘ Gulf of Mexico region NERFINISHED ⓘ Mexico region ⓘ |
| hasShapeResemblance | North America continent ⓘ |
| ionizingSource | nearby hot stars ⓘ |
| isTargetFor |
astrophotography
ⓘ
wide-field surveys ⓘ |
| liesNear | Galactic plane ⓘ |
| locatedIn |
Milky Way
ⓘ
Orion Arm NERFINISHED ⓘ |
| locatedInConstellation | Cygnus NERFINISHED ⓘ |
| nearbyBrightStar | Deneb NERFINISHED ⓘ |
| observableWith |
binoculars
ⓘ
small telescope ⓘ |
| partOf | Cygnus star-forming complex NERFINISHED ⓘ |
| reddishColorCause | hydrogen emission ⓘ |
| requiresForDetail | wide-field imaging ⓘ |
| rightAscension | 20h 58m ⓘ |
| separatedFrom | Pelican Nebula NERFINISHED ⓘ |
| separationCause | dark dust lane ⓘ |
| spectralType | emission nebula spectrum dominated by hydrogen ⓘ |
| visibleFromHemisphere | Northern 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: NGC 7000 Description of subject: NGC 7000 is a large emission nebula in the constellation Cygnus whose shape strikingly resembles the continent of North America.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Cygnus