Dactyl

E385071

Dactyl is a small natural satellite orbiting the asteroid 243 Ida, notable as the first confirmed moon of an asteroid ever discovered.

All labels observed (1)

Label Occurrences
Dactyl canonical 3

How this entity was disambiguated

Statements (46)

Predicate Object
instanceOf asteroid moon ⓘ
natural satellite ⓘ
albedo 0.2 ⓘ
alternativeName Ida I ⓘ
belongsToDynamicalClass Ida family ⓘ
belongsToSystem 243 Ida–Dactyl system ⓘ
designation (243) Ida I Dactyl ⓘ
linked to: 243 Ida
dimension_km 1.6 × 1.4 × 1.2 ⓘ
discoveredBy Galileo mission ⓘ
linked to: Galileo spacecraft

Galileo spacecraft ⓘ
discoveredInContextOf Galileo flyby of 243 Ida ⓘ
linked to: Galileo spacecraft
discoveryDate 1993-02-17 ⓘ
discoveryMethod spacecraft imaging ⓘ
discoveryStatus confirmed ⓘ
distanceFromIdaRange_km 85–115 ⓘ
firstOf first confirmed moon of an asteroid ⓘ
hasCraters yes ⓘ
hasEstimatedMass_kg ~5×10^12 ⓘ
hasLowGravity true ⓘ
hasMeanRadius_km 0.7 ⓘ
hasNoAtmosphere true ⓘ
hasRegolith yes ⓘ
hasShape irregular ⓘ
imageCapturedBy Galileo imaging system ⓘ
linked to: Galileo SSI camera
isAsynchronousWithIdaRotation likely ⓘ
isGravitationallyBoundTo 243 Ida ⓘ
linked to: (243) Ida
isNaturalSatelliteOf 243 Ida ⓘ
isUniqueAsOfDiscovery first known satellite of an asteroid ⓘ
locatedIn main asteroid belt ⓘ
meanDiameter_km 1.4 ⓘ
namedAfter dactyl (mythological being) ⓘ
linked to: Dactyls
namedBy International Astronomical Union ⓘ
observedBy Galileo spacecraft ⓘ
orbitalEccentricity 0.2 ⓘ
orbitalInclination_deg 9 ⓘ
orbitalPeriod_hours 20.7 ⓘ
orbits 243 Ida ⓘ
linked to: (243) Ida

asteroid 243 Ida ⓘ
linked to: 243 Ida
parentBody 243 Ida ⓘ
rotationPeriod_hours about 20 ⓘ
semiMajorAxis_km 90 ⓘ
spectralType S-type ⓘ
surfaceComposition silicate rock ⓘ
surfaceFeatures boulders ⓘ
impact craters ⓘ
ridges ⓘ

How these facts were elicited

Referenced by (3)

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

Ida → hasSatellite → Dactyl ⓘ
Ida → satelliteDiscovery → Dactyl ⓘ