Coma Berenices Dwarf Galaxy
E496365
The Coma Berenices Dwarf Galaxy is a faint, ultra-low-luminosity dwarf spheroidal satellite galaxy located in the constellation Coma Berenices and gravitationally bound to the Milky Way.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Coma Berenices Dwarf Galaxy canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4618738 — 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: Coma Berenices Dwarf Galaxy Context triple: [Milky Way subgroup, hasMember, Coma Berenices Dwarf Galaxy]
-
A.
Bootes I Dwarf Galaxy
Bootes I Dwarf Galaxy is a faint, spheroidal satellite galaxy of the Milky Way located in the constellation Boötes and known for its very low luminosity and dark-matter dominance.
-
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.
Draco Dwarf Galaxy
Draco Dwarf Galaxy is a faint, spheroidal satellite galaxy of the Milky Way, notable for its high dark matter content and very low rate of star formation.
-
D.
Cetus Dwarf Galaxy
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.
-
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: Coma Berenices Dwarf Galaxy Target entity description: The Coma Berenices Dwarf Galaxy is a faint, ultra-low-luminosity dwarf spheroidal satellite galaxy located in the constellation Coma Berenices and gravitationally bound to the Milky Way.
-
A.
Bootes I Dwarf Galaxy
Bootes I Dwarf Galaxy is a faint, spheroidal satellite galaxy of the Milky Way located in the constellation Boötes and known for its very low luminosity and dark-matter dominance.
-
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.
Draco Dwarf Galaxy
Draco Dwarf Galaxy is a faint, spheroidal satellite galaxy of the Milky Way, notable for its high dark matter content and very low rate of star formation.
-
D.
Cetus Dwarf Galaxy
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.
-
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 (47)
| Predicate | Object |
|---|---|
| instanceOf |
dwarf spheroidal galaxy
ⓘ
ultra-faint dwarf galaxy ⓘ |
| absoluteMagnitude_V_approx | -4.1 ⓘ |
| ageOfDominantPopulation_approx | >10 billion years ⓘ |
| apparentMagnitude_V_approx | 18 ⓘ |
| belongsTo |
Milky Way halo
ⓘ
linked to:
Milky Way stellar halo
|
| constellation | Coma Berenices ⓘ |
| contains |
blue horizontal branch stars
ⓘ
red giant branch stars ⓘ |
| containsGas | very little or no detectable gas ⓘ |
| coordinateSystem | equatorial ⓘ |
| darkMatterDominated | true ⓘ |
| darkMatterToStellarMassRatio | very high ⓘ |
| declination_approx | +23° 54′ ⓘ |
| discoveredBy |
Beth Willman
ⓘ
colleagues using Sloan Digital Sky Survey data ⓘ |
| discoveryMethod | analysis of Sloan Digital Sky Survey data ⓘ |
| discoveryYear | 2006 ⓘ |
| distanceFromEarth_approx | 44000 light-years ⓘ |
| distanceFromSun_approx | 44 kiloparsecs ⓘ |
| galaxyType | dSph ⓘ |
| halfLightRadius_angular_approx | 5.9 arcminutes ⓘ |
| halfLightRadius_approx | 70 parsecs ⓘ |
| hasAlternativeName |
ComBer dSph
ⓘ
Coma Berenices dSph ⓘ |
| hostGalaxy | Milky Way ⓘ |
| isAmong | faintest known galaxies ⓘ |
| isClassifiedAs | ultra-low-luminosity dwarf spheroidal galaxy ⓘ |
| isGravitationallyBoundTo | Milky Way ⓘ |
| isMemberOf | Local Group ⓘ |
| isNearbyTo | Milky Way ⓘ |
| isOneOf | ultra-faint Milky Way satellites discovered in the 21st century ⓘ |
| isPartOf | Milky Way satellite system ⓘ |
| isResolvedIntoStars | true ⓘ |
| isSatelliteOf | Milky Way ⓘ |
| isUsedAs | probe of dark matter in low-luminosity systems ⓘ |
| luminosity_approx | 3700 times the luminosity of the Sun ⓘ |
| metallicity_FeH_approx | -2.0 ⓘ |
| observedIn |
near-infrared wavelengths
ⓘ
optical wavelengths ⓘ |
| radialVelocity_approx | 98 km/s (heliocentric) ⓘ |
| redshift_approx | 0.0003 ⓘ |
| rightAscension_approx | 12h 26m ⓘ |
| starFormationActivity | no current star formation ⓘ |
| stellarMass_approx | a few thousand solar masses ⓘ |
| stellarPopulation | old, metal-poor stars ⓘ |
| surfaceBrightness | extremely 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: Coma Berenices Dwarf Galaxy Description of subject: The Coma Berenices Dwarf Galaxy is a faint, ultra-low-luminosity dwarf spheroidal satellite galaxy located in the constellation Coma Berenices and gravitationally bound to the Milky Way.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.