Cetus Dwarf Galaxy
E134849
The Cetus Dwarf Galaxy is a faint, spheroidal dwarf galaxy located in the constellation Cetus and is one of the small satellite members of our cosmic neighborhood.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Cetus Dwarf Galaxy canonical | 1 |
| Cetus dwarf spheroidal galaxy | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T869155 — 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: Cetus Dwarf Galaxy Context triple: [Local Group, contains, Cetus Dwarf 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.
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.
-
C.
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.
-
D.
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.
-
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: Cetus Dwarf Galaxy Target entity description: The Cetus Dwarf Galaxy is a faint, spheroidal dwarf galaxy located in the constellation Cetus and is one of the small satellite members of our cosmic neighborhood.
-
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.
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.
-
C.
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.
-
D.
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.
-
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 (46)
| Predicate | Object |
|---|---|
| instanceOf |
Local Group member
ⓘ
dwarf galaxy ⓘ satellite galaxy of the Milky Way ⓘ spheroidal galaxy ⓘ |
| absoluteMagnitudeV | about −11.3 ⓘ |
| alternativeName |
Cetus dSph
ⓘ
Cetus Dwarf Galaxy ⓘ
surface form:
Cetus dwarf spheroidal galaxy
|
| apparentMagnitudeV | ~14.5 ⓘ |
| belongsTo |
Cetus
ⓘ
surface form:
Cetus constellation region
|
| color | overall red ⓘ |
| constellation | Cetus ⓘ |
| contains |
horizontal branch stars
ⓘ
old red giant stars ⓘ variable stars ⓘ |
| darkMatterContent | dark-matter-dominated ⓘ |
| declination | −11° 02′ ⓘ |
| discoveredBy |
Alan Whiting
ⓘ
George K. T. Hau ⓘ
surface form:
George Hau
Mike Irwin ⓘ |
| discoveryYear | 1999 ⓘ |
| distanceFromEarth |
about 240 kiloparsecs
ⓘ
about 780000 light-years ⓘ |
| environment | Local Group field ⓘ |
| galaxyType | dwarf spheroidal ⓘ |
| gasContent | gas-poor ⓘ |
| locatedIn |
Local Group dwarf galaxies
ⓘ
surface form:
Local Group outskirts
|
| luminosityClass | low-luminosity dwarf ⓘ |
| memberOf | Local Group ⓘ |
| metallicity | low ⓘ |
| morphologicalType | dSph ⓘ |
| observableFrom |
Southern Hemisphere
ⓘ
low northern latitudes ⓘ |
| observedWith |
Hubble Space Telescope
ⓘ
large ground-based telescopes ⓘ |
| radialVelocity | about −87 km/s ⓘ |
| researchUse |
study of Local Group structure
ⓘ
study of dwarf galaxy evolution ⓘ |
| rightAscension | 00h 26m ⓘ |
| satelliteOf | Milky Way ⓘ |
| shape | spheroidal ⓘ |
| starFormationActivity | quiescent ⓘ |
| starFormationHistory | predominantly ancient episodes ⓘ |
| stellarMass | on the order of 10^6 solar masses ⓘ |
| stellarPopulation | old ⓘ |
| surfaceBrightness | very 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: Cetus Dwarf Galaxy Description of subject: The Cetus Dwarf Galaxy is a faint, spheroidal dwarf galaxy located in the constellation Cetus and is one of the small satellite members of our cosmic neighborhood.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Cetus dwarf spheroidal galaxy