Tucana dSph
E569244
Tucana dSph is a faint, isolated dwarf spheroidal galaxy in the constellation Tucana and a remote satellite of the Milky Way.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Tucana dSph canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T6112002 — 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: Tucana dSph Context triple: [Tucana Dwarf Galaxy, hasAlternativeName, Tucana dSph]
-
A.
Carina dSph
Carina dSph is a faint dwarf spheroidal satellite galaxy of the Milky Way located in the constellation Carina.
-
B.
Draco dSph
Draco dSph is a faint, dark-matter-dominated dwarf spheroidal galaxy that orbits the Milky Way in the constellation Draco.
-
C.
Ursa Minor dSph
Ursa Minor dSph is a faint dwarf spheroidal satellite galaxy of the Milky Way located in the constellation Ursa Minor.
-
D.
Cetus dSph
Cetus dSph is a faint dwarf spheroidal galaxy in the constellation Cetus that is a satellite of the Milky Way and notable for its old, metal-poor stellar population.
-
E.
Pegasus dSph
Pegasus dSph is a faint dwarf spheroidal satellite galaxy of the Andromeda Galaxy located in the constellation Pegasus.
- 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: Tucana dSph Target entity description: Tucana dSph is a faint, isolated dwarf spheroidal galaxy in the constellation Tucana and a remote satellite of the Milky Way.
-
A.
Carina dSph
Carina dSph is a faint dwarf spheroidal satellite galaxy of the Milky Way located in the constellation Carina.
-
B.
Draco dSph
Draco dSph is a faint, dark-matter-dominated dwarf spheroidal galaxy that orbits the Milky Way in the constellation Draco.
-
C.
Ursa Minor dSph
Ursa Minor dSph is a faint dwarf spheroidal satellite galaxy of the Milky Way located in the constellation Ursa Minor.
-
D.
Cetus dSph
Cetus dSph is a faint dwarf spheroidal galaxy in the constellation Cetus that is a satellite of the Milky Way and notable for its old, metal-poor stellar population.
-
E.
Pegasus dSph
Pegasus dSph is a faint dwarf spheroidal satellite galaxy of the Andromeda Galaxy located in the constellation Pegasus.
- F. None of above. chosen
Statements (29)
| Predicate | Object |
|---|---|
| instanceOf | dwarf spheroidal galaxy ⓘ |
| absoluteMagnitudeV | about −9 ⓘ |
| alternativeName |
Tucana dwarf galaxy
ⓘ
linked to:
Tucana Dwarf Galaxy
Tucana dwarf spheroidal galaxy ⓘ
linked to:
Tucana Dwarf Spheroidal
|
| angularSeparationFromMilkyWayCenter | large angular distance on the sky ⓘ |
| constellation | Tucana ⓘ |
| darkMatterContent | dark-matter-dominated ⓘ |
| declination | approximately −64° 25′ ⓘ |
| discoverer | A. Kunkel and collaborators ⓘ |
| discoveryYear | 1991 ⓘ |
| distanceFromAndromeda | comparable to its distance from the Milky Way ⓘ |
| distanceFromMilkyWay |
about 2.8 million light-years
ⓘ
about 870 kiloparsecs ⓘ |
| environment | outer regions of the Local Group ⓘ |
| galacticLatitude | high galactic latitude ⓘ |
| gasContent | gas-poor ⓘ |
| halfLightRadius | a few hundred parsecs ⓘ |
| hostGalaxy | Milky Way ⓘ |
| importance | example of an isolated Local Group dwarf spheroidal galaxy ⓘ |
| isolation | relatively isolated from other Local Group dwarfs ⓘ |
| luminosityClass | very low luminosity ⓘ |
| membership | Local Group ⓘ |
| metallicity | metal-poor stellar population ⓘ |
| morphologicalType | dSph ⓘ |
| radialVelocity | receding with respect to the Milky Way ⓘ |
| rightAscension | approximately 22h 41m ⓘ |
| starFormationActivity | no current star formation ⓘ |
| stellarPopulation | predominantly old stars ⓘ |
| surfaceBrightness | low surface brightness ⓘ |
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: Tucana dSph Description of subject: Tucana dSph is a faint, isolated dwarf spheroidal galaxy in the constellation Tucana and a remote satellite of the Milky Way.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.