Andromeda Dwarf II
E527606
Andromeda Dwarf II is a faint dwarf spheroidal satellite galaxy of the Andromeda Galaxy (M31) located in the Local Group.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Andromeda Dwarf 2 | 1 |
| Andromeda Dwarf II canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5363251 — 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: Andromeda Dwarf II Context triple: [Andromeda II, alternateName, Andromeda Dwarf II]
-
A.
Canes Venatici II Dwarf Galaxy
Canes Venatici II Dwarf Galaxy is a faint, small satellite galaxy of the Milky Way located in the constellation Canes Venatici and classified as an ultra-faint dwarf spheroidal galaxy.
-
B.
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.
-
C.
Hercules Dwarf Galaxy
Hercules Dwarf Galaxy is a faint, small satellite galaxy of the Milky Way located in the constellation Hercules and classified as a dwarf spheroidal galaxy.
-
D.
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.
-
E.
Bootes II Dwarf Galaxy
Bootes II Dwarf Galaxy is a faint, ultra-low-luminosity satellite galaxy of the Milky Way located in the constellation Boötes.
- 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: Andromeda Dwarf II Target entity description: Andromeda Dwarf II is a faint dwarf spheroidal satellite galaxy of the Andromeda Galaxy (M31) located in the Local Group.
-
A.
Canes Venatici II Dwarf Galaxy
Canes Venatici II Dwarf Galaxy is a faint, small satellite galaxy of the Milky Way located in the constellation Canes Venatici and classified as an ultra-faint dwarf spheroidal galaxy.
-
B.
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.
-
C.
Hercules Dwarf Galaxy
Hercules Dwarf Galaxy is a faint, small satellite galaxy of the Milky Way located in the constellation Hercules and classified as a dwarf spheroidal galaxy.
-
D.
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.
-
E.
Bootes II Dwarf Galaxy
Bootes II Dwarf Galaxy is a faint, ultra-low-luminosity satellite galaxy of the Milky Way located in the constellation Boötes.
- F. None of above. chosen
Statements (39)
| Predicate | Object |
|---|---|
| instanceOf |
dwarf spheroidal galaxy
ⓘ
galaxy in the Local Group ⓘ |
| absoluteMagnitudeV | approximately −12.6 ⓘ |
| belongsTo |
Local Group dwarf spheroidal population
ⓘ
Local Group satellite galaxy system ⓘ
linked to:
Local Group dwarf galaxies
|
| contains | little or no gas ⓘ |
| coordinateSystem | equatorial coordinates ⓘ |
| discoveredBy | Sidney van den Bergh ⓘ |
| discoveredInYear | 1970 ⓘ |
| distanceFromAndromedaGalaxy | approximately 185 kiloparsecs ⓘ |
| distanceFromEarth |
approximately 2.2 million light-years
ⓘ
approximately 680 kiloparsecs ⓘ |
| dominantStellarPopulationAge | older than 8 billion years ⓘ |
| environment | satellite system of Andromeda Galaxy ⓘ |
| galaxyType | dwarf spheroidal ⓘ |
| hasAlternativeName |
And II
ⓘ
Andromeda Dwarf 2 ⓘ
linked to:
Andromeda Dwarf II
Andromeda II ⓘ |
| hasAngularSize | small ⓘ |
| hasRadialVelocity | receding relative to the Milky Way ⓘ |
| hostGalaxy | Andromeda Galaxy ⓘ |
| locatedIn | constellation Andromeda ⓘ |
| luminosityClass | faint ⓘ |
| memberOf | Local Group ⓘ |
| metallicity | low ⓘ |
| morphologicalType | dSph ⓘ |
| observedBy | ground-based telescopes ⓘ |
| observedIn |
near-infrared wavelengths
ⓘ
optical wavelengths ⓘ |
| orbitalRelation | satellite of M31 within its dark matter halo ⓘ |
| partOf |
Andromeda subgroup of the Local Group
ⓘ
linked to:
Andromeda subgroup
|
| redshift | low redshift typical of Local Group galaxies ⓘ |
| satelliteOf |
Andromeda Galaxy
ⓘ
M31 ⓘ
linked to:
Andromeda Galaxy
|
| starFormationActivity | no current star formation ⓘ |
| stellarPopulation |
metal-poor stars
ⓘ
old stars ⓘ |
| surfaceBrightness | low ⓘ |
| visibility | faint ⓘ |
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: Andromeda Dwarf II Description of subject: Andromeda Dwarf II is a faint dwarf spheroidal satellite galaxy of the Andromeda Galaxy (M31) located in the Local Group.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Andromeda Dwarf II