Larissa

E154214

Larissa is one of Neptune’s small, irregularly shaped inner moons, discovered in 1981 and composed primarily of dark, icy material.

All labels observed (1)

Label Occurrences
Larissa canonical 2

How this entity was disambiguated

Statements (45)

Predicate Object
instanceOf inner moon
moon of Neptune
natural satellite
albedo low
alternativeName Neptune VII
belongsTo Neptunian moons
belongsToPlanetarySystem Neptune system
catalogDesignation S/1981 N 1
celestialBodyType irregularly shaped moon
confirmationYear 1989
confirmedBy Voyager 2
dimensions_km 216 × 204 × 166
discoveredBy David J. Tholen
Harold J. Reitsema
Larry A. Lebofsky
William B. Hubbard NERFINISHED
discoveredWith ground-based telescope
discoveryDate 1981-05-24
discoveryLocation Earth-based observatories
discoveryMethod stellar occultation
discoveryYear 1981
equilibriumTemperature_K about 51
escapeVelocity_km_per_s 0.16
hasNoAtmosphere true
IAUDesignation Neptune VII
isTidallyLockedTo Neptune
meanDensity_g_per_cm3 about 1.2
meanOrbitalRadiusFromNeptune_km 73548
meanRadius_km 97
namedAfter Larisa (ancient city)
surface form: Larissa (figure in Greek mythology)
orbitalEccentricity 0.0014
orbitalInclination_degrees 0.205
orbitalMotion prograde
orbitalPeriod_days 0.554654
orbits Neptune
parentPlanetMassComparison very small compared to Neptune
primary Neptune
relativePositionInSystem inner regular satellite of Neptune
rotation synchronous with its orbital period
semiMajorAxis_km 73548
shape irregular
surfaceColor dark
surfaceComposition dark icy material
surfaceFeature heavily cratered
synchronousRotator true

How these facts were elicited

Referenced by (2)

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

Neptune moon Larissa
Galatea neighboringMoons Larissa