Messier 83
E473825
Messier 83 is a bright, nearby barred spiral galaxy in the constellation Hydra, notable for its vigorous star formation and frequent supernovae.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Messier 83 canonical | 4 |
How this entity was disambiguated
This entity first appeared as the object of triple T4835280 — 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: Messier 83 Context triple: [Centaurus A/M83 Group, containsGalaxy, Messier 83]
-
A.
Messier 82
Messier 82, also known as the Cigar Galaxy, is a nearby starburst galaxy in Ursa Major undergoing intense star formation and strong galactic winds.
-
B.
Messier 8
Messier 8, also known as the Lagoon Nebula, is a large, bright emission nebula and active star-forming region visible in the constellation Sagittarius.
-
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.
Messier 32
Messier 32 is a compact dwarf elliptical galaxy that is a satellite of the Andromeda Galaxy in the Local Group.
-
E.
Messier 26
Messier 26 is an open star cluster located in the constellation Scutum, notable for its relatively compact grouping of stars and moderate brightness.
- 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: Messier 83 Target entity description: Messier 83 is a bright, nearby barred spiral galaxy in the constellation Hydra, notable for its vigorous star formation and frequent supernovae.
-
A.
Messier 82
Messier 82, also known as the Cigar Galaxy, is a nearby starburst galaxy in Ursa Major undergoing intense star formation and strong galactic winds.
-
B.
Messier 8
Messier 8, also known as the Lagoon Nebula, is a large, bright emission nebula and active star-forming region visible in the constellation Sagittarius.
-
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.
Messier 32
Messier 32 is a compact dwarf elliptical galaxy that is a satellite of the Andromeda Galaxy in the Local Group.
-
E.
Messier 26
Messier 26 is an open star cluster located in the constellation Scutum, notable for its relatively compact grouping of stars and moderate brightness.
- F. None of above. chosen
Statements (51)
| Predicate | Object |
|---|---|
| instanceOf |
Messier object
ⓘ
NGC object ⓘ barred spiral galaxy ⓘ extragalactic astronomical object ⓘ starburst galaxy ⓘ |
| addedToMessierCatalogueBy | Charles Messier NERFINISHED ⓘ |
| alsoKnownAs |
M83
NERFINISHED
ⓘ
NGC 5236 NERFINISHED ⓘ Southern Pinwheel Galaxy NERFINISHED ⓘ |
| angularSize | ~13.1 × 11.5 arcminutes ⓘ |
| apparentMagnitudeV | ~7.5 ⓘ |
| belongsToGalaxyGroup | Centaurus A/M83 Group NERFINISHED ⓘ |
| bestSeenInMonth | May ⓘ |
| contains | nuclear starburst region ⓘ |
| declination | −29° 52′ ⓘ |
| discoveredBy | Nicolas-Louis de Lacaille NERFINISHED ⓘ |
| discoveryYear | 1752 ⓘ |
| distanceFromEarth |
~15 million light-years
ⓘ
~4.5 megaparsecs ⓘ |
| galacticLatitude | +31.97° ⓘ |
| galacticLongitude | 314.58° ⓘ |
| hasActiveStarFormation | yes ⓘ |
| hasBar | yes ⓘ |
| hasSpiralArms | yes ⓘ |
| hostGalaxyOf | multiple supernovae ⓘ |
| isFaceOnGalaxy | yes ⓘ |
| isNearbyGalaxy | yes ⓘ |
| locatedInConstellation | Hydra NERFINISHED ⓘ |
| messierNumber | 83 ⓘ |
| morphologicalType | SAB(s)c ⓘ |
| ngcNumber | 5236 ⓘ |
| notableFor |
frequent supernovae
ⓘ
vigorous star formation ⓘ |
| observedInWavelength |
X-ray
ⓘ
infrared ⓘ optical ⓘ radio ⓘ ultraviolet ⓘ |
| radialVelocity | ~513 km/s ⓘ |
| redshift | 0.0017 ⓘ |
| rightAscension | 13h 37m ⓘ |
| supernovaeObserved |
SN 1923A
NERFINISHED
ⓘ
SN 1945B NERFINISHED ⓘ SN 1950B NERFINISHED ⓘ SN 1957D NERFINISHED ⓘ SN 1968L NERFINISHED ⓘ SN 1983N NERFINISHED ⓘ SN 2008ho NERFINISHED ⓘ SN 2012A NERFINISHED ⓘ SN 2014L NERFINISHED ⓘ |
| visibleFrom | 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: Messier 83 Description of subject: Messier 83 is a bright, nearby barred spiral galaxy in the constellation Hydra, notable for its vigorous star formation and frequent supernovae.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.