Pegasus Dwarf Irregular Galaxy
E132767
The Pegasus Dwarf Irregular Galaxy is a small, faint, gas-rich dwarf irregular galaxy located on the outskirts of the Local Group and known for its low stellar mass and ongoing, modest star formation.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Pegasus Dwarf Irregular Galaxy canonical | 5 |
How this entity was disambiguated
This entity first appeared as the object of triple T869153 — 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: Pegasus Dwarf Irregular Galaxy Context triple: [Local Group, contains, Pegasus Dwarf Irregular Galaxy]
-
A.
Carina Dwarf Galaxy
The Carina Dwarf Galaxy is a faint, spheroidal satellite galaxy of the Milky Way located in the Local Group, notable for its low luminosity and predominantly old stellar population.
-
B.
Draco Dwarf Galaxy
Draco Dwarf Galaxy is a faint, spheroidal satellite galaxy of the Milky Way, notable for its high dark matter content and very low rate of star formation.
-
C.
Fornax Dwarf Galaxy
The Fornax Dwarf Galaxy is a small spheroidal satellite galaxy of the Milky Way, notable for its rich population of globular clusters and its membership in the Local Group.
-
D.
Canis Major Dwarf Galaxy
The Canis Major Dwarf Galaxy is a nearby, faint irregular dwarf galaxy thought to be the closest known satellite galaxy to the Milky Way and currently being tidally disrupted by it.
-
E.
Ursa Minor Dwarf Galaxy
The Ursa Minor Dwarf Galaxy is a faint, spheroidal satellite galaxy of the Milky Way located in the constellation Ursa Minor and composed primarily of old, metal-poor stars.
- 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: Pegasus Dwarf Irregular Galaxy Target entity description: The Pegasus Dwarf Irregular Galaxy is a small, faint, gas-rich dwarf irregular galaxy located on the outskirts of the Local Group and known for its low stellar mass and ongoing, modest star formation.
-
A.
Carina Dwarf Galaxy
The Carina Dwarf Galaxy is a faint, spheroidal satellite galaxy of the Milky Way located in the Local Group, notable for its low luminosity and predominantly old stellar population.
-
B.
Draco Dwarf Galaxy
Draco Dwarf Galaxy is a faint, spheroidal satellite galaxy of the Milky Way, notable for its high dark matter content and very low rate of star formation.
-
C.
Fornax Dwarf Galaxy
The Fornax Dwarf Galaxy is a small spheroidal satellite galaxy of the Milky Way, notable for its rich population of globular clusters and its membership in the Local Group.
-
D.
Canis Major Dwarf Galaxy
The Canis Major Dwarf Galaxy is a nearby, faint irregular dwarf galaxy thought to be the closest known satellite galaxy to the Milky Way and currently being tidally disrupted by it.
-
E.
Ursa Minor Dwarf Galaxy
The Ursa Minor Dwarf Galaxy is a faint, spheroidal satellite galaxy of the Milky Way located in the constellation Ursa Minor and composed primarily of old, metal-poor stars.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
Local Group member
ⓘ
dwarf irregular galaxy ⓘ galaxy ⓘ |
| absoluteMagnitude_V | approximately -12.3 ⓘ |
| alsoKnownAs |
DDO 216
ⓘ
PGC 71538 ⓘ Peg DIG ⓘ UGC 12613 ⓘ |
| angularSize_arcmin | approximately 5 x 2.7 ⓘ |
| apparentMagnitude_V | approximately 13.2 ⓘ |
| catalog |
DDO
ⓘ
PGC ⓘ UGC ⓘ |
| constellation | Pegasus ⓘ |
| contains |
H II regions
ⓘ
neutral hydrogen (H I) ⓘ young blue stars ⓘ |
| discoveredBy | Sidney van den Bergh ⓘ |
| discoveryYear | 1959 ⓘ |
| distanceFromEarth_ly | approximately 3,000,000 ⓘ |
| distanceFromEarth_Mpc | approximately 0.9 ⓘ |
| dominantStellarPopulation | intermediate-age stars ⓘ |
| environment |
Local Group outskirts
ⓘ
linked to:
Local Group dwarf galaxies
|
| gasToStellarMassRatio | of order unity or higher ⓘ |
| hasKinematics | slow rotation or pressure support dominated ⓘ |
| hasProperty |
dark-matter-dominated
ⓘ
gas-rich ⓘ isolated compared to many Local Group dwarfs ⓘ low stellar mass ⓘ low surface brightness ⓘ metal-poor ⓘ modest star formation rate ⓘ ongoing star formation ⓘ |
| heliocentricRadialVelocity_kmPerSec | approximately -183 ⓘ |
| locatedIn | Local Group ⓘ |
| morphologicalType | dIrr ⓘ |
| nearbyObject |
Andromeda Galaxy
ⓘ
Milky Way ⓘ |
| neutralHydrogenMass_solarMasses | on the order of 10^7 ⓘ |
| observedIn |
optical wavelengths
ⓘ
radio wavelengths ⓘ ultraviolet wavelengths ⓘ |
| onOutskirtsOf | Local Group ⓘ |
| redshift_z | approximately -0.00061 ⓘ |
| starFormationRate_solarMassesPerYear | approximately 0.0001 ⓘ |
| stellarMass_solarMasses | on the order of 10^7 ⓘ |
| usedAs |
laboratory for low-metallicity star formation studies
ⓘ
probe of dark matter in dwarf galaxies ⓘ |
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: Pegasus Dwarf Irregular Galaxy Description of subject: The Pegasus Dwarf Irregular Galaxy is a small, faint, gas-rich dwarf irregular galaxy located on the outskirts of the Local Group and known for its low stellar mass and ongoing, modest star formation.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.