Andromeda XV
E120915
Andromeda XV is a faint dwarf spheroidal satellite galaxy of the Andromeda Galaxy located within the Local Group.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Andromeda XV canonical | 8 |
How this entity was disambiguated
This entity first appeared as the object of triple T869170 — 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 XV Context triple: [Local Group, contains, Andromeda XV]
-
A.
Andromeda X
Andromeda X is a faint dwarf spheroidal satellite galaxy of the Andromeda Galaxy within the Local Group.
-
B.
Andromeda IX
Andromeda IX is a faint dwarf spheroidal satellite galaxy of the Andromeda Galaxy located within the Local Group.
-
C.
Andromeda XI
Andromeda XI is a faint dwarf spheroidal satellite galaxy of the Andromeda Galaxy located within the Local Group.
-
D.
Andromeda I
Andromeda I is a dwarf spheroidal satellite galaxy of the Andromeda Galaxy (M31) located within the Local Group.
-
E.
Andromeda XII
Andromeda XII is a faint dwarf spheroidal galaxy that orbits the Andromeda Galaxy as one of its distant satellite members within the Local Group.
- 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 XV Target entity description: Andromeda XV is a faint dwarf spheroidal satellite galaxy of the Andromeda Galaxy located within the Local Group.
-
A.
Andromeda X
Andromeda X is a faint dwarf spheroidal satellite galaxy of the Andromeda Galaxy within the Local Group.
-
B.
Andromeda IX
Andromeda IX is a faint dwarf spheroidal satellite galaxy of the Andromeda Galaxy located within the Local Group.
-
C.
Andromeda XI
Andromeda XI is a faint dwarf spheroidal satellite galaxy of the Andromeda Galaxy located within the Local Group.
-
D.
Andromeda I
Andromeda I is a dwarf spheroidal satellite galaxy of the Andromeda Galaxy (M31) located within the Local Group.
-
E.
Andromeda XII
Andromeda XII is a faint dwarf spheroidal galaxy that orbits the Andromeda Galaxy as one of its distant satellite members within the Local Group.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
astronomical object
ⓘ
dwarf spheroidal galaxy ⓘ satellite galaxy ⓘ |
| absoluteMagnitudeV | about −8.7 ⓘ |
| alternativeName |
And XV
ⓘ
Andromeda 15 ⓘ |
| apparentMagnitudeV | about 17.0 ⓘ |
| belongsTo |
Andromeda satellite system
ⓘ
Local Group dwarf galaxies ⓘ |
| colorIndex | red ⓘ |
| contains | old red giant branch stars ⓘ |
| coordinateSystem | equatorial ⓘ |
| darkMatterContent | dark-matter-dominated ⓘ |
| declination | about +38° 07′ ⓘ |
| discoveredBy |
M. J. Irwin
ⓘ
T. S. Chapman ⓘ collaborators ⓘ |
| discoveryMethod | wide-field imaging survey ⓘ |
| discoveryYear | 2007 ⓘ |
| distanceFromAndromedaGalaxy | approximately 93 kiloparsecs ⓘ |
| distanceFromEarth | approximately 770 kiloparsecs ⓘ |
| environment | outer halo of the Andromeda Galaxy ⓘ |
| galaxyType | dwarf spheroidal ⓘ |
| gasContent | gas-poor ⓘ |
| gasPhase | no detected neutral hydrogen ⓘ |
| halfLightRadius |
about 0.7 arcminutes
ⓘ
about 120 parsecs ⓘ |
| hostGalaxy | Andromeda Galaxy ⓘ |
| hostGalaxyType | barred spiral galaxy ⓘ |
| isSatelliteOf |
M31
ⓘ
linked to:
Andromeda Galaxy
|
| locatedInConstellation | Andromeda ⓘ |
| luminosity | about 8×10^4 times the luminosity of the Sun ⓘ |
| memberOf | Local Group ⓘ |
| metallicity | [Fe/H] about −1.8 ⓘ |
| morphologicalType | dSph ⓘ |
| observedWith |
Canada-France-Hawaii Telescope
ⓘ
linked to:
Canada–France–Hawaii Telescope
|
| orbitalContext | satellite in the halo of M31 ⓘ |
| populationAge | older than 8–10 billion years ⓘ |
| radialVelocity | about −323 km/s ⓘ |
| redshift | approximately −0.0007 ⓘ |
| rightAscension | about 01h 14m ⓘ |
| satelliteOf | Andromeda Galaxy ⓘ |
| starFormationActivity | no current star formation ⓘ |
| stellarMass | on the order of 10^5 solar masses ⓘ |
| stellarPopulation | old ⓘ |
| surfaceBrightness | very low ⓘ |
| surfaceBrightnessProfile | exponential ⓘ |
| survey | CFHT MegaCam survey of M31 surroundings ⓘ |
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 XV Description of subject: Andromeda XV is a faint dwarf spheroidal satellite galaxy of the Andromeda Galaxy located within the Local Group.
Referenced by (8)
Full triples — surface form annotated when it differs from this entity's canonical label.