Phoebe
E45105
Phoebe is an irregular, retrograde moon of Saturn believed to be a captured object from the outer Solar System.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Phoebe canonical | 10 |
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
irregular satellite
ⓘ
moon of Saturn ⓘ natural satellite ⓘ retrograde satellite ⓘ |
| albedo | low geometric albedo ⓘ |
| atmosphere | no substantial atmosphere detected ⓘ |
| axialTilt | small relative to its orbit ⓘ |
| belongsTo |
Saturnian system
ⓘ
Solar System ⓘ |
| belongsToGroup | Norse group of Saturnian moons ⓘ |
| catalogCode | S/1899 S 1 ⓘ |
| contributesTo | Phoebe ring of Saturn ⓘ |
| density_g_per_cm3 | approximately 1.6 ⓘ |
| designation | Saturn IX ⓘ |
| discoveredBy | William Henry Pickering ⓘ |
| discoveryMethod | telescopic observation ⓘ |
| discoveryYear | 1899 ⓘ |
| eccentricity | high orbital eccentricity ⓘ |
| escapeVelocity_m_per_s | approximately 100 ⓘ |
| firstOuterMoonOfSaturnDiscovered | true ⓘ |
| flybyDate | 2004 ⓘ |
| gravitationalInfluence | affects dust distribution in outer Saturnian system ⓘ |
| gravity | very low surface gravity ⓘ |
| imagedBy |
Cassini–Huygens
ⓘ
surface form:
Cassini imaging system
|
| inclination | high inclination relative to Saturn’s equator ⓘ |
| likelyOrigin | outer Solar System ⓘ |
| meanDiameter_km | approximately 213 ⓘ |
| meanRadius_km | approximately 106.5 ⓘ |
| namedAfter |
Asteria
ⓘ
surface form:
Phoebe (Titaness from Greek mythology)
|
| orbitalClass | irregular ⓘ |
| orbitalDirection | retrograde ⓘ |
| orbitalPeriod_days | approximately 550 ⓘ |
| orbits | Saturn ⓘ |
| possibleOrigin |
captured Kuiper belt object
ⓘ
captured centaur-like body ⓘ |
| ringAssociation | source of material for Saturn’s outer Phoebe ring ⓘ |
| rotationPeriod_hours | approximately 9.27 ⓘ |
| rotationState | not tidally locked ⓘ |
| scientificInterest | clues to early outer Solar System conditions ⓘ |
| semiMajorAxis_km | approximately 12,952,000 ⓘ |
| shape | roughly spherical but irregular ⓘ |
| spectralType | C-type or D-type asteroid–like ⓘ |
| surfaceColor | dark ⓘ |
| surfaceComposition | water ice mixed with dark material ⓘ |
| surfaceFeatures |
heavily cratered
ⓘ
large impact basins ⓘ |
| visitedBy |
Cassini–Huygens
ⓘ
surface form:
Cassini–Huygens spacecraft
|
Referenced by (10)
Full triples — surface form annotated when it differs from this entity's canonical label.