DDO 216
E559334
DDO 216 is a faint, nearby dwarf irregular galaxy in the constellation Pegasus that is part of the Local Group of galaxies.
All labels observed (1)
| Label | Occurrences |
|---|---|
| DDO 216 canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T5966571 — 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 216 Context triple: [Pegasus Dwarf Irregular Galaxy, alsoKnownAs, DDO 216]
-
A.
DDO 208
DDO 208 is a faint dwarf spheroidal galaxy in the constellation Draco that is one of the Milky Way’s satellite galaxies.
-
B.
DDO 53
DDO 53 is a faint dwarf irregular galaxy that is a member of the nearby M81 Group in the constellation Ursa Major.
-
C.
DDO 74
DDO 74 is a faint dwarf spheroidal galaxy in the constellation Leo and a satellite of the Milky Way, commonly known as the Leo I Dwarf Galaxy.
-
D.
DDO 82
DDO 82 is a dwarf irregular galaxy that is a member of the nearby M81 Group of galaxies.
-
E.
D21
D21 is the second-generation Nissan Navara (also known as the Nissan Hardbody), a compact pickup truck platform produced from the mid-1980s through the late 1990s and sold worldwide.
- 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 216 Target entity description: DDO 216 is a faint, nearby dwarf irregular galaxy in the constellation Pegasus that is part of the Local Group of galaxies.
-
A.
DDO 208
DDO 208 is a faint dwarf spheroidal galaxy in the constellation Draco that is one of the Milky Way’s satellite galaxies.
-
B.
DDO 53
DDO 53 is a faint dwarf irregular galaxy that is a member of the nearby M81 Group in the constellation Ursa Major.
-
C.
DDO 74
DDO 74 is a faint dwarf spheroidal galaxy in the constellation Leo and a satellite of the Milky Way, commonly known as the Leo I Dwarf Galaxy.
-
D.
DDO 82
DDO 82 is a dwarf irregular galaxy that is a member of the nearby M81 Group of galaxies.
-
E.
D21
D21 is the second-generation Nissan Navara (also known as the Nissan Hardbody), a compact pickup truck platform produced from the mid-1980s through the late 1990s and sold worldwide.
- F. None of above. chosen
Statements (39)
| Predicate | Object |
|---|---|
| instanceOf | dwarf irregular galaxy ⓘ |
| absoluteMagnitudeV | ~-12 ⓘ |
| alsoKnownAs |
PGC 71538
ⓘ
Peg DIG ⓘ Pegasus Dwarf Irregular Galaxy ⓘ UGC 12613 ⓘ |
| angularSize | ~6.0 × 3.5 arcminutes ⓘ |
| apparentMagnitudeV | ~14.0 ⓘ |
| catalog |
DDO
ⓘ
PGC ⓘ UGC ⓘ |
| contains |
neutral hydrogen gas
ⓘ
old stars ⓘ young stars ⓘ |
| declination | +14° 44′ ⓘ |
| discoveredBy | Sidney van den Bergh ⓘ |
| discoveryYear | 1959 ⓘ |
| distanceFromEarth |
~0.9 megaparsecs
ⓘ
~3.0 million light-years ⓘ |
| environment | Local Group outskirts ⓘ |
| galaxyType | gas-rich dwarf galaxy ⓘ |
| hasComponent | resolved stellar population ⓘ |
| hasHIIRegions | yes ⓘ |
| hasStarFormation | low-level ongoing star formation ⓘ |
| isDarkMatterDominated | likely ⓘ |
| isFaint | true ⓘ |
| isGravitationallyBoundTo | Local Group potential well ⓘ |
| isIsolatedDwarf | relatively isolated within Local Group ⓘ |
| isNearby | true ⓘ |
| locatedInConstellation | Pegasus ⓘ |
| memberOf | Local Group ⓘ |
| metallicity | low metallicity ⓘ |
| morphologicalType | Im ⓘ |
| observedIn |
optical wavelengths
ⓘ
radio wavelengths ⓘ |
| radialVelocity | ~-183 km/s ⓘ |
| rightAscension | 23h 28m ⓘ |
| stellarMass | ~10^7 solar masses ⓘ |
| surfaceBrightness | low ⓘ |
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 216 Description of subject: DDO 216 is a faint, nearby dwarf irregular galaxy in the constellation Pegasus that is part of the Local Group of galaxies.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.