Leo IV Dwarf Galaxy
E497592
Leo IV Dwarf Galaxy is a faint, small satellite galaxy of the Milky Way located in the constellation Leo and classified as an ultra-faint dwarf spheroidal galaxy.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Leo IV Dwarf Galaxy canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4618739 — 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: Leo IV Dwarf Galaxy Context triple: [Milky Way subgroup, hasMember, Leo IV Dwarf Galaxy]
-
A.
Leo I Dwarf Galaxy
Leo I Dwarf Galaxy is a faint, spheroidal satellite galaxy of the Milky Way located in the constellation Leo and belonging to the Local Group of galaxies.
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B.
Leo II Dwarf Galaxy
Leo II Dwarf Galaxy is a faint, spheroidal dwarf galaxy and satellite of the Milky Way located in the constellation Leo and belonging to the Local Group of galaxies.
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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.
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D.
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.
-
E.
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.
- 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: Leo IV Dwarf Galaxy Target entity description: Leo IV Dwarf Galaxy is a faint, small satellite galaxy of the Milky Way located in the constellation Leo and classified as an ultra-faint dwarf spheroidal galaxy.
-
A.
Leo I Dwarf Galaxy
Leo I Dwarf Galaxy is a faint, spheroidal satellite galaxy of the Milky Way located in the constellation Leo and belonging to the Local Group of galaxies.
-
B.
Leo II Dwarf Galaxy
Leo II Dwarf Galaxy is a faint, spheroidal dwarf galaxy and satellite of the Milky Way located in the constellation Leo and belonging to the Local Group of galaxies.
-
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.
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.
-
E.
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.
- F. None of above. chosen
Statements (43)
| Predicate | Object |
|---|---|
| instanceOf |
dwarf spheroidal galaxy
ⓘ
ultra-faint dwarf galaxy ⓘ |
| belongsToSubgroup | Milky Way dwarf spheroidal satellites ⓘ |
| discoveredBy | SDSS (Sloan Digital Sky Survey) NERFINISHED ⓘ |
| discoveryMethod | digital sky survey ⓘ |
| hasAbsoluteMagnitudeV | ~-5.5 ⓘ |
| hasAlternativeName |
Leo IV
NERFINISHED
ⓘ
Leo IV dSph NERFINISHED ⓘ |
| hasApparentMagnitudeV | ~16.0 ⓘ |
| hasBaryonContent | low ⓘ |
| hasClassification | ultra-faint Milky Way satellite ⓘ |
| hasCoordinateSystem | equatorial ⓘ |
| hasDarkMatterDominance | dark-matter-dominated ⓘ |
| hasDeclination | ~−00° 33′ ⓘ |
| hasDiscoveryEpoch | early 21st century ⓘ |
| hasDistanceFromEarth_kpc | ~160 ⓘ |
| hasDistanceFromEarth_ly | ~520000 ⓘ |
| hasDominantStellarPopulationAge_Gyr | >10 ⓘ |
| hasDynamicalMassToLightRatio | high ⓘ |
| hasEnvironment | outer Galactic halo ⓘ |
| hasGalacticLatitude | high ⓘ |
| hasGalaxyType | dSph ⓘ |
| hasGasContent | gas-poor ⓘ |
| hasHalfLightRadius_pc | ~130 ⓘ |
| hasHeliocentricDistance_kpc | ~154 ⓘ |
| hasLuminosityClass | ultra-faint ⓘ |
| hasMetallicity_FeH | ~-2.5 ⓘ |
| hasRadialVelocity_kms | ~132 ⓘ |
| hasRightAscension | ~11h 32m ⓘ |
| hasShape | spheroidal ⓘ |
| hasStarFormationActivity | quiescent ⓘ |
| hasStarFormationHistory | ancient burst with little recent activity ⓘ |
| hasStellarMass_Msun | ~1e4 ⓘ |
| hasStellarPopulation | old, metal-poor stars ⓘ |
| hasSurfaceBrightness | very low ⓘ |
| hasTidalInteractionWith | Milky Way NERFINISHED ⓘ |
| isGravitationallyBoundTo | Milky Way NERFINISHED ⓘ |
| isNearbyTo | Leo V Dwarf Galaxy NERFINISHED ⓘ |
| locatedInConstellation | Leo NERFINISHED ⓘ |
| memberOf | Local Group NERFINISHED ⓘ |
| observedInSurvey |
Sloan Digital Sky Survey
NERFINISHED
ⓘ
follow-up deep imaging surveys ⓘ |
| satelliteOf | Milky Way NERFINISHED ⓘ |
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: Leo IV Dwarf Galaxy Description of subject: Leo IV Dwarf Galaxy is a faint, small satellite galaxy of the Milky Way located in the constellation Leo and classified as an ultra-faint dwarf spheroidal galaxy.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.