NGC
E476463
NGC is a widely used astronomical catalog that lists thousands of deep-sky objects such as galaxies, star clusters, and nebulae.
All labels observed (4)
| Label | Occurrences |
|---|---|
| NGC canonical | 29 |
| NGC object | 1 |
| NGC objects | 1 |
| NGC/IC system | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4885861 — 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 Context triple: [New General Catalogue, abbreviation, NGC]
-
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 2976
NGC 2976 is a nearby dwarf spiral galaxy in the constellation Ursa Major and a member of the M81 Group of galaxies.
-
C.
NGC 2023
NGC 2023 is a bright reflection nebula in the constellation Orion, illuminated by a young B-type star and noted for its complex dust and gas structures.
-
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 Target entity description: NGC is a widely used astronomical catalog that lists thousands of deep-sky objects such as galaxies, star clusters, and nebulae.
-
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 2976
NGC 2976 is a nearby dwarf spiral galaxy in the constellation Ursa Major and a member of the M81 Group of galaxies.
-
C.
NGC 2023
NGC 2023 is a bright reflection nebula in the constellation Orion, illuminated by a young B-type star and noted for its complex dust and gas structures.
-
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 (69)
| Predicate | Object |
|---|---|
| instanceOf |
astronomical catalog
ⓘ
deep-sky object catalog ⓘ |
| abbreviationOf | New General Catalogue ⓘ |
| approximateNumberOfObjects | around 7800 ⓘ |
| basedOnObservationsBy |
John Herschel
ⓘ
William Herschel ⓘ |
| catalogNumberFormat | NGC followed by an integer index ⓘ |
| compiledBy | John Louis Emil Dreyer ⓘ |
| compilerNationality | Danish-Irish ⓘ |
| containsObjectsDiscoveredBy |
John Herschel
ⓘ
William Herschel ⓘ other 19th-century astronomers ⓘ |
| coordinateSystemUsed | equatorial coordinates ⓘ |
| coversRegion | entire sky ⓘ |
| crossReferencedIn |
NASA/IPAC Extragalactic Database
ⓘ
linked to:
NASA Extragalactic Database
SIMBAD astronomical database ⓘ |
| dataType |
brightness estimates
ⓘ
positions of objects ⓘ size estimates ⓘ visual descriptions ⓘ |
| exampleDesignation |
NGC 224
ⓘ
NGC 7009 ⓘ |
| extendedBy |
IC I
ⓘ
linked to:
IC
IC II ⓘ Index Catalogue ⓘ |
| field | astronomy ⓘ |
| firstPublished | 1888 ⓘ |
| focusesOn | deep-sky objects ⓘ |
| followedBy |
IC
ⓘ
Index Catalogue ⓘ |
| fullName |
New General Catalogue of Nebulae and Clusters of Stars
ⓘ
linked to:
New General Catalogue
|
| hasKnownIssues | contains historical errors and misidentifications ⓘ |
| hasModernRevision |
NGC 2000.0
ⓘ
RNGC ⓘ Revised New General Catalogue ⓘ
linked to:
New General Catalogue
|
| hasNotableEntry |
NGC 1976
ⓘ
NGC 224 ⓘ NGC 5139 ⓘ NGC 6205 ⓘ NGC 7000 ⓘ |
| includes |
diffuse nebulae
ⓘ
emission nebulae ⓘ galactic nebulae ⓘ galaxies ⓘ galaxy clusters ⓘ globular clusters ⓘ nebulae ⓘ open clusters ⓘ planetary nebulae ⓘ reflection nebulae ⓘ star clusters ⓘ |
| languageOfOriginalPublication | English ⓘ |
| laterEpochUsedInRevisions | J2000.0 ⓘ |
| maintainedIn | various modern electronic databases ⓘ |
| notableEntryExample |
NGC 1976 is the Orion Nebula
ⓘ
linked to:
NGC 1976
NGC 224 is the Andromeda Galaxy ⓘ
linked to:
NGC 224
NGC 5139 is Omega Centauri ⓘ
linked to:
Omega Centauri
NGC 6205 is the globular cluster M13 ⓘ
linked to:
globular star cluster M13
NGC 7000 is the North America Nebula ⓘ
linked to:
NGC 7000
|
| numberOfEntries | 7840 ⓘ |
| originalEpoch | B1855 ⓘ |
| predecessor | General Catalogue of Nebulae and Clusters of Stars ⓘ |
| predecessorCompiledBy | John Herschel ⓘ |
| publicationCentury | 19th century ⓘ |
| publishedIn |
Memoirs of the Royal Astronomical Society
ⓘ
linked to:
Royal Astronomical Society publications
|
| publisher | Royal Astronomical Society ⓘ |
| status | one of the most widely used deep-sky catalogs ⓘ |
| usedBy |
amateur astronomers
ⓘ
professional astronomers ⓘ |
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 Description of subject: NGC is a widely used astronomical catalog that lists thousands of deep-sky objects such as galaxies, star clusters, and nebulae.
Referenced by (32)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject linked to:
NGC 7320 is a spiral galaxy
subject linked to:
globular cluster NGC 6541
subject linked to:
openCluster NGC 6664
linked to: NGC
subject linked to:
open cluster NGC 6603
subject linked to:
IC II (second Index Catalogue)
linked to: NGC
subject linked to:
planetary nebula NGC 6210