Neptune V (Despina)
E568111
Neptune V (Despina) is a small, irregularly shaped inner moon of Neptune that orbits close to the planet and is likely a captured or fragmented body.
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
inner moon
ⓘ
irregularly shaped body ⓘ moon of Neptune ⓘ natural satellite ⓘ |
| albedo | low ⓘ |
| alternativeOriginHypothesis |
captured body later modified by collisions
ⓘ
fragment of a disrupted larger moon ⓘ |
| atmosphere | no significant atmosphere ⓘ |
| belongsToPlanetarySystem | Neptune system NERFINISHED ⓘ |
| catalogDesignation | Neptune V NERFINISHED ⓘ |
| celestialBodyType | natural satellite ⓘ |
| coordinateSystem | Neptune-centric ⓘ |
| dimensions_km | about 180 × 148 × 128 ⓘ |
| discoveredBy |
Stephen P. Synnott
NERFINISHED
ⓘ
Voyager 2 imaging team NERFINISHED ⓘ |
| discoveredBySpacecraft | Voyager 2 NERFINISHED ⓘ |
| discoveryDate | 1989-07-29 ⓘ |
| discoveryMethod | spacecraft imaging ⓘ |
| discoveryMission | Voyager 2 Neptune flyby NERFINISHED ⓘ |
| dynamicalState | slowly spiraling inward due to tidal interactions ⓘ |
| equilibriumState | not in hydrostatic equilibrium ⓘ |
| escapeVelocity_m_per_s | on the order of 100 ⓘ |
| geologicalActivity | no known current geological activity ⓘ |
| IAUName | Despina NERFINISHED ⓘ |
| likelyComposition | water ice and rock mixture ⓘ |
| likelyOrigin | accreted from a debris disk around Neptune ⓘ |
| locatedIn | outer Solar System ⓘ |
| meanDensity_g_per_cm3 | about 1.2 ⓘ |
| meanRadius_km | approximately 75 ⓘ |
| memberOf | Solar System NERFINISHED ⓘ |
| namedAfter | Despina NERFINISHED ⓘ |
| namedAfterFromMythology | a Nereid in Greek mythology ⓘ |
| orbitalDirection | prograde ⓘ |
| orbitalInclination | small relative to Neptune’s equator ⓘ |
| orbitalPeriod_days | about 0.335 ⓘ |
| orbitalSemimajorAxis_km | about 52,500 ⓘ |
| orbits | Neptune NERFINISHED ⓘ |
| orbitsInside | Neptune’s synchronous orbit radius ⓘ |
| planet | Neptune NERFINISHED ⓘ |
| positionInSystem | inner regular satellite of Neptune ⓘ |
| primaryBody | Neptune NERFINISHED ⓘ |
| provisionalDesignation | S/1989 N3 ⓘ |
| rotationState | synchronous rotation ⓘ |
| shape | irregular ⓘ |
| surfaceColor | dark ⓘ |
| surfaceFeatures |
heavily cratered
ⓘ
no large tectonic structures detected ⓘ |
| tidalLock | tidally locked to Neptune ⓘ |
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.