S/1989 N4

E506477

S/1989 N4 is the provisional designation of Galatea, one of Neptune’s inner moons discovered in 1989.

All labels observed (2)

Label Occurrences
S/1989 N 4 1
S/1989 N4 canonical 1

How this entity was disambiguated

Statements (35)

Predicate Object
instanceOf moon of Neptune
natural satellite
albedo about 0.08
alsoKnownAs Galatea
belongsTo inner Neptunian satellite group
belongsToPlanetarySystem Neptunian system
linked to: Neptune system
celestialBodyType inner moon of Neptune
controlsRingArcs Adams ring arcs of Neptune
linked to: Neptune ring arcs
discoveredBy Voyager 2
discoverer Voyager 2 imaging team
discoveryMethod spacecraft imaging
discoveryStatus confirmed
discoveryYear 1989
eccentricity low
equatorialRadius_km about 88
hasRingAssociation Neptune’s Adams ring
IAUNameApprovalYear 1991
inclination low relative to Neptune’s equator
meanOrbitalRadius_km 61953
meanRadius_km about 88
namedAfter Galatea (sea nymph in Greek mythology)
linked to: Galatea (sea nymph)
observedBy Voyager 2
orbitalDirection prograde
orbitalPeriod_hours 10.3
orbitalResonance near 42:43 resonance with Neptune’s ring arcs
orbits Neptune
parentPlanet Neptune
permanentName Galatea
provisionalDesignation S/1989 N4
rotationState synchronous with Neptune
semiMajorAxis_km 61953
shape irregular
spectralType neutral to slightly reddish
surfaceColor dark
synchronousRotation true

How these facts were elicited

Referenced by (2)

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

Galatea catalogDesignation S/1989 N4
Neptune VI provisionalDesignation S/1989 N 4
linked to: S/1989 N4