Titania

E117406

Titania is the largest of Uranus's moons, an icy, heavily cratered satellite discovered by William Herschel in 1787.

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All labels observed (1)

Label Occurrences
Titania canonical 10

Statements (50)

Predicate Object
instanceOf astronomical object
moon of Uranus
natural satellite
albedoGeometric 0.27
averageOrbitalDistanceFromUranus_km 436300
axialTilt_degrees 0
belongsTo Solar System
belongsToPlanetarySystem Uranian system
bondAlbedo 0.23
celestialBodyType icy satellite
color slightly red
density_g_per_cm3 1.71
discoveredInYear 1787
discoverer William Herschel
discoveryDate 1787-01-11
equatorialRadius_km 788.9
escapeVelocity_km_per_s 0.79
flybyDate_Voyager2 1986-01-24
geologicalActivityEvidence past tectonism
hasExosphere possible tenuous CO2 exosphere
hemisphereImagedBest southern hemisphere
mass_kg 3.527e21
massRelativeToMoon 0.048
meanDiameter_km 1576.8
meanRadius_km 788.4
meanSurfaceArea_km2 7.8e6
meanVolume_km3 2.05e9
namedAfter Titania (Queen of the Fairies in Shakespeare's A Midsummer Night's Dream)
orbitalEccentricity 0.0011
orbitalInclination_degrees 0.34
orbitalPeriod_days 8.706
orbits Uranus
parentPlanet Uranus
polarRadius_km 788.4
positionByMassInUranianSystem most massive moon of Uranus
positionBySizeInUranianSystem largest moon of Uranus
rankBySizeAmongMoons eighth-largest moon in the Solar System
rotationPeriod_days 8.706
semiMajorAxis_km 436300
spectralCharacteristics water-ice absorption bands
surfaceComposition rocky material
water ice
surfaceFeatures chasmata (canyons)
fault valleys
impact craters
surfaceGravity_m_per_s2 0.367
surfaceTemperature_K_max 89
surfaceTemperature_K_min 60
synchronousRotation true
visitedBySpacecraft Voyager 2

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: Titania
Description of subject: Titania is the largest of Uranus's moons, an icy, heavily cratered satellite discovered by William Herschel in 1787.

Referenced by (10)

Full triples — surface form annotated when it differs from this entity's canonical label.