Pegasus dSph
E487628
Pegasus dSph is a faint dwarf spheroidal satellite galaxy of the Andromeda Galaxy located in the constellation Pegasus.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Pegasus dSph canonical | 5 |
How this entity was disambiguated
This entity first appeared as the object of triple T4911661 — 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 dSph Context triple: [Andromeda VI, alternateName, Pegasus dSph]
-
A.
Sextans Dwarf Spheroidal Galaxy
The Sextans Dwarf Spheroidal Galaxy is a faint, low-mass satellite galaxy of the Milky Way located in the constellation Sextans and composed primarily of old, metal-poor stars.
-
B.
Sagittarius Dwarf Spheroidal Galaxy
The Sagittarius Dwarf Spheroidal Galaxy is a small, elongated satellite galaxy currently being tidally disrupted and absorbed by the Milky Way.
-
C.
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.
-
D.
Aquarius Dwarf Galaxy
The Aquarius Dwarf Galaxy is a faint, small dwarf irregular galaxy on the outskirts of the Local Group, notable for its low luminosity and sparse stellar population.
-
E.
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.
- 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 dSph Target entity description: Pegasus dSph is a faint dwarf spheroidal satellite galaxy of the Andromeda Galaxy located in the constellation Pegasus.
-
A.
Sextans Dwarf Spheroidal Galaxy
The Sextans Dwarf Spheroidal Galaxy is a faint, low-mass satellite galaxy of the Milky Way located in the constellation Sextans and composed primarily of old, metal-poor stars.
-
B.
Sagittarius Dwarf Spheroidal Galaxy
The Sagittarius Dwarf Spheroidal Galaxy is a small, elongated satellite galaxy currently being tidally disrupted and absorbed by the Milky Way.
-
C.
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.
-
D.
Aquarius Dwarf Galaxy
The Aquarius Dwarf Galaxy is a faint, small dwarf irregular galaxy on the outskirts of the Local Group, notable for its low luminosity and sparse stellar population.
-
E.
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.
- F. None of above. chosen
Statements (30)
| Predicate | Object |
|---|---|
| instanceOf |
dwarf spheroidal galaxy
ⓘ
galaxy ⓘ satellite galaxy ⓘ |
| absoluteMagnitudeV | about −10.3 ⓘ |
| alternateName |
Andromeda VI
ⓘ
Pegasus dwarf spheroidal galaxy ⓘ
linked to:
Pegasus Dwarf Spheroidal Galaxy
|
| angularSize | about 8 arcminutes ⓘ |
| apparentMagnitudeV | about 14.2 ⓘ |
| belongsTo |
Andromeda subgroup of the Local Group
ⓘ
linked to:
Andromeda subgroup
|
| contains |
horizontal branch stars
ⓘ
red giant branch stars ⓘ |
| darkMatterContent | dominant mass component ⓘ |
| declination | +05° 24′ ⓘ |
| discoveredBy | Armandroff et al. ⓘ |
| discoveryYear | 1999 ⓘ |
| distanceFromAndromedaGalaxy | about 294 kiloparsecs ⓘ |
| distanceFromEarth |
about 2.7 million light-years
ⓘ
about 820 kiloparsecs ⓘ |
| galaxyType | dSph ⓘ |
| gasContent | very low ⓘ |
| hostGalaxy | Andromeda Galaxy ⓘ |
| locatedInConstellation | Pegasus ⓘ |
| memberOf | Local Group ⓘ |
| metallicity | low ⓘ |
| morphologicalType | dSph ⓘ |
| radialVelocity | about −354 km/s ⓘ |
| rightAscension | about 23h 28m ⓘ |
| starFormationActivity | quiescent ⓘ |
| stellarPopulation | old ⓘ |
| 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: Pegasus dSph Description of subject: Pegasus dSph is a faint dwarf spheroidal satellite galaxy of the Andromeda Galaxy located in the constellation Pegasus.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.