NGC 5236
E473826
NGC 5236, also known as the Southern Pinwheel Galaxy or Messier 83, is a bright, nearby barred spiral starburst galaxy prominent in the constellation Hydra.
All labels observed (1)
| Label | Occurrences |
|---|---|
| NGC 5236 canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4835281 — 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 5236 Context triple: [Centaurus A/M83 Group, containsGalaxy, NGC 5236]
-
A.
NGC 5128
NGC 5128, also known as Centaurus A, is a nearby peculiar elliptical galaxy with a prominent dust lane and one of the strongest radio sources in the sky.
-
B.
NGC 2403
NGC 2403 is a nearby spiral galaxy in the constellation Camelopardalis, notable for its active star formation and numerous observed supernovae.
-
C.
Messier 81
Messier 81 is a prominent, nearby grand-design spiral galaxy in the constellation Ursa Major, notable for its brightness and well-defined structure.
-
D.
NGC 3077
NGC 3077 is a small, irregular dwarf galaxy in the constellation Ursa Major that is gravitationally interacting with the nearby spiral galaxy M81.
-
E.
NGC 2976
NGC 2976 is a nearby dwarf spiral galaxy in the constellation Ursa Major and a member of the M81 Group of galaxies.
- 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 5236 Target entity description: NGC 5236, also known as the Southern Pinwheel Galaxy or Messier 83, is a bright, nearby barred spiral starburst galaxy prominent in the constellation Hydra.
-
A.
NGC 5128
NGC 5128, also known as Centaurus A, is a nearby peculiar elliptical galaxy with a prominent dust lane and one of the strongest radio sources in the sky.
-
B.
NGC 2403
NGC 2403 is a nearby spiral galaxy in the constellation Camelopardalis, notable for its active star formation and numerous observed supernovae.
-
C.
Messier 81
Messier 81 is a prominent, nearby grand-design spiral galaxy in the constellation Ursa Major, notable for its brightness and well-defined structure.
-
D.
NGC 3077
NGC 3077 is a small, irregular dwarf galaxy in the constellation Ursa Major that is gravitationally interacting with the nearby spiral galaxy M81.
-
E.
NGC 2976
NGC 2976 is a nearby dwarf spiral galaxy in the constellation Ursa Major and a member of the M81 Group of galaxies.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
Messier object
ⓘ
NGC object ⓘ barred spiral galaxy ⓘ deep-sky object ⓘ starburst galaxy ⓘ |
| alsoKnownAs |
M83
NERFINISHED
ⓘ
Messier 83 NERFINISHED ⓘ Southern Pinwheel Galaxy NERFINISHED ⓘ |
| angularSize | 13.1 × 11.5 arcminutes ⓘ |
| apparentMagnitudeV | 7.5 ⓘ |
| catalogNumber |
M83
NERFINISHED
ⓘ
Messier 83 NERFINISHED ⓘ NGC 5236 NERFINISHED ⓘ PGC 48082 NERFINISHED ⓘ |
| discoveredBy | Nicolas-Louis de Lacaille NERFINISHED ⓘ |
| discoveryYear | 1752 ⓘ |
| distanceFromEarth |
approximately 15 million light-years
ⓘ
approximately 4.5 megaparsecs ⓘ |
| hasActiveStarFormation | yes ⓘ |
| hasBar | yes ⓘ |
| hasColor |
bluish
ⓘ
reddish star-forming regions ⓘ |
| hasNuclearStarburst | yes ⓘ |
| hasSpiralArms | yes ⓘ |
| hasStructure |
bright spiral arms
ⓘ
central bar ⓘ dust lanes ⓘ |
| hostGalaxyOf |
supernova SN 1923A
NERFINISHED
ⓘ
supernova SN 1945B NERFINISHED ⓘ supernova SN 1950B NERFINISHED ⓘ supernova SN 1957D NERFINISHED ⓘ supernova SN 1968L NERFINISHED ⓘ supernova SN 1983N NERFINISHED ⓘ supernova SN 2008ha NERFINISHED ⓘ |
| isNearbyGalaxy | yes ⓘ |
| isProminentIn | amateur astronomy ⓘ |
| isStarburstGalaxy | yes ⓘ |
| isVisibleFrom | Southern Hemisphere NERFINISHED ⓘ |
| locatedInConstellation | Hydra NERFINISHED ⓘ |
| morphologicalType | SAB(s)c ⓘ |
| observedBy |
Hubble Space Telescope
NERFINISHED
ⓘ
Spitzer Space Telescope NERFINISHED ⓘ Very Large Telescope NERFINISHED ⓘ |
| observedIn |
infrared wavelengths
ⓘ
optical wavelengths ⓘ radio wavelengths ⓘ |
| partOf | local universe ⓘ |
| radialVelocity | 513 km/s ⓘ |
| redshift | 0.0017 ⓘ |
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 5236 Description of subject: NGC 5236, also known as the Southern Pinwheel Galaxy or Messier 83, is a bright, nearby barred spiral starburst galaxy prominent in the constellation Hydra.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.