NGC 1976
E506956
NGC 1976, better known as the Orion Nebula (M42), is a bright, nearby emission nebula in the constellation Orion and one of the most studied stellar nurseries in the night sky.
All labels observed (2)
| Label | Occurrences |
|---|---|
| NGC 1976 canonical | 5 |
| NGC 1976 is the Orion Nebula | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4885889 — 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 1976 Context triple: [New General Catalogue, notableObjectExample, NGC 1976]
-
A.
NGC 1977
NGC 1977 is a bright reflection nebula and star-forming region located in the constellation Orion, often seen near the famous Orion Nebula as part of the same larger complex.
-
B.
NGC 5102
NGC 5102 is a lenticular galaxy in the constellation Centaurus, notable for its relatively nearby distance and membership in the Centaurus A/M83 galaxy group.
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C.
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.
-
D.
NGC 6611
NGC 6611 is a young, massive open star cluster embedded within the Eagle Nebula, notable for illuminating and shaping its surrounding interstellar gas and dust.
-
E.
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.
- 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 1976 Target entity description: NGC 1976, better known as the Orion Nebula (M42), is a bright, nearby emission nebula in the constellation Orion and one of the most studied stellar nurseries in the night sky.
-
A.
NGC 1977
NGC 1977 is a bright reflection nebula and star-forming region located in the constellation Orion, often seen near the famous Orion Nebula as part of the same larger complex.
-
B.
NGC 5102
NGC 5102 is a lenticular galaxy in the constellation Centaurus, notable for its relatively nearby distance and membership in the Centaurus A/M83 galaxy group.
-
C.
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.
-
D.
NGC 6611
NGC 6611 is a young, massive open star cluster embedded within the Eagle Nebula, notable for illuminating and shaping its surrounding interstellar gas and dust.
-
E.
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.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
H II region
ⓘ
Messier object ⓘ emission nebula ⓘ |
| alsoKnownAs |
M42
ⓘ
Messier 42 ⓘ Orion Nebula ⓘ |
| angularSize | about 65×60 arcminutes ⓘ |
| apparentMagnitudeV | about 4.0 ⓘ |
| catalogCode |
M42
ⓘ
NGC 1976 ⓘ Sh 2-281 ⓘ |
| contains |
brown dwarfs
ⓘ
ionized hydrogen gas ⓘ molecular clouds ⓘ protoplanetary disks ⓘ protostars ⓘ young stars ⓘ |
| declination | −05° 23′ ⓘ |
| discoveredBy | Nicolas-Claude Fabri de Peiresc ⓘ |
| discoveryYear | 1610 ⓘ |
| distanceFromEarth |
about 1340 light-years
ⓘ
about 410 parsecs ⓘ |
| emits | strong hydrogen-alpha radiation ⓘ |
| excitedBy |
Theta1 Orionis C
ⓘ
massive O-type stars ⓘ |
| hasAge | about 1–3 million years for its youngest stars ⓘ |
| hasComponent | Trapezium Cluster ⓘ |
| hasRole | laboratory for studying star formation ⓘ |
| is |
one of the brightest nebulae in the night sky
ⓘ
one of the closest massive star-forming regions to Earth ⓘ one of the most studied star-forming regions ⓘ visible to the naked eye ⓘ |
| locatedIn |
Milky Way
ⓘ
Orion Arm ⓘ |
| locatedInConstellation | Orion ⓘ |
| near |
NGC 1982
ⓘ
linked to:
NGC 1973
Running Man Nebula ⓘ |
| observedBy |
Chandra X-ray Observatory
ⓘ
Hubble Space Telescope ⓘ Spitzer Space Telescope ⓘ |
| observedIn |
infrared wavelengths
ⓘ
optical wavelengths ⓘ radio wavelengths ⓘ |
| partOf | Orion Molecular Cloud Complex ⓘ |
| regionType | stellar nursery ⓘ |
| rightAscension | 05h 35m ⓘ |
| spectralTypeDominantExcitingStar | O6 ⓘ |
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 1976 Description of subject: NGC 1976, better known as the Orion Nebula (M42), is a bright, nearby emission nebula in the constellation Orion and one of the most studied stellar nurseries in the night sky.
Referenced by (6)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: NGC 1976