DDO 82
E450576
DDO 82 is a dwarf irregular galaxy that is a member of the nearby M81 Group of galaxies.
All labels observed (2)
How this entity was disambiguated
This entity first appeared as the object of triple T4531652 — 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: DDO 82 Context triple: [M81 Group, containsGalaxy, DDO 82]
-
A.
DDF
DDF is the commonly used abbreviation for the Dicastery for the Doctrine of the Faith, the Vatican department responsible for promoting and safeguarding Catholic doctrine.
-
B.
D.N.D.
D.N.D. is the standard legal abbreviation for the United States District Court for the District of North Dakota, a federal trial court within the Eighth Circuit.
-
C.
Doud
Doud is the maiden surname of Mamie Eisenhower, the First Lady of the United States during Dwight D. Eisenhower’s presidency.
-
D.
DDW
DDW is the abbreviation for Dutch Design Week, a major annual design event held in Eindhoven, the Netherlands, showcasing innovative work from designers across disciplines.
-
E.
DD 5.1
DD 5.1 is a surround sound audio format that delivers discrete multichannel sound, typically used in home theater systems, cinemas, and digital broadcasts.
- 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: DDO 82 Target entity description: DDO 82 is a dwarf irregular galaxy that is a member of the nearby M81 Group of galaxies.
-
A.
DDF
DDF is the commonly used abbreviation for the Dicastery for the Doctrine of the Faith, the Vatican department responsible for promoting and safeguarding Catholic doctrine.
-
B.
D.N.D.
D.N.D. is the standard legal abbreviation for the United States District Court for the District of North Dakota, a federal trial court within the Eighth Circuit.
-
C.
Doud
Doud is the maiden surname of Mamie Eisenhower, the First Lady of the United States during Dwight D. Eisenhower’s presidency.
-
D.
DDW
DDW is the abbreviation for Dutch Design Week, a major annual design event held in Eindhoven, the Netherlands, showcasing innovative work from designers across disciplines.
-
E.
DD 5.1
DD 5.1 is a surround sound audio format that delivers discrete multichannel sound, typically used in home theater systems, cinemas, and digital broadcasts.
- F. None of above. chosen
Statements (45)
| Predicate | Object |
|---|---|
| instanceOf |
dwarf irregular galaxy
ⓘ
galaxy ⓘ |
| absoluteMagnitudeV | about −14 ⓘ |
| apparentMagnitudeV | about 13.5 ⓘ |
| belongsTo | nearby universe ⓘ |
| catalog |
DDO
ⓘ
PGC ⓘ UGC ⓘ |
| constellation | Ursa Major ⓘ |
| contains |
H II regions
ⓘ
neutral hydrogen gas ⓘ young stellar populations ⓘ |
| diameter | about 5,000 light-years ⓘ |
| discoveredBy | Sidney van den Bergh ⓘ |
| discoveryMethod | photographic survey ⓘ |
| distanceFromEarth |
about 12 million light-years
ⓘ
about 3.7 megaparsecs ⓘ |
| environment | low-density group environment ⓘ |
| hasGasMass | on the order of 10^8 solar masses ⓘ |
| hasProperty |
irregular morphology
ⓘ
low surface brightness ⓘ ongoing star formation ⓘ |
| hasStarFormationRate | low but non-zero ⓘ |
| hasStellarMass | on the order of 10^7–10^8 solar masses ⓘ |
| is | a satellite or companion of the M81 Group ⓘ |
| isGasRich | true ⓘ |
| isUsedFor |
studies of dwarf galaxy evolution
ⓘ
studies of star formation in low-mass galaxies ⓘ |
| locatedIn | Ursa Major ⓘ |
| memberOf | M81 Group ⓘ |
| metallicity | sub-solar ⓘ |
| morphologicalType | Im ⓘ |
| near |
M81
ⓘ
linked to:
Messier 81
NGC 2403 ⓘ |
| observedIn |
H I 21-cm line
ⓘ
optical wavelengths ⓘ radio wavelengths ⓘ |
| otherName |
DDO 82A
ⓘ
linked to:
DDO 82
PGC 31837 ⓘ UGC 5692 ⓘ VII Zw 238 ⓘ |
| partOf |
Local Volume
ⓘ
nearby M81 Group environment ⓘ |
| radialVelocity | approximately 250 km/s ⓘ |
| redshift | low redshift ⓘ |
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: DDO 82 Description of subject: DDO 82 is a dwarf irregular galaxy that is a member of the nearby M81 Group of galaxies.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.