Orcus–Vanth system
E1026163
Kuiper belt moon
binary Kuiper belt object system
dwarf planet candidate
natural satellite
plutino
trans-Neptunian binary system
trans-Neptunian object
The Orcus–Vanth system is a binary Kuiper Belt object consisting of the dwarf-planet candidate Orcus and its large moon Vanth, notable for their relatively similar sizes and tight mutual orbit.
Observed surface forms (2)
| Surface form | Occurrences |
|---|---|
| 90482 Orcus | 0 |
| Vanth | 0 |
Statements (56)
| Predicate | Object |
|---|---|
| instanceOf |
Kuiper belt moon
ⓘ
binary Kuiper belt object system ⓘ dwarf planet candidate ⓘ natural satellite ⓘ plutino ⓘ trans-Neptunian binary system ⓘ trans-Neptunian object ⓘ |
| discoveredBy |
Chad Trujillo
NERFINISHED
ⓘ
David Rabinowitz NERFINISHED ⓘ Michael E. Brown NERFINISHED ⓘ Michael E. Brown NERFINISHED ⓘ |
| discoveredWith | Hubble Space Telescope NERFINISHED ⓘ |
| discoveryDate |
2004-02-17
ⓘ
2005-11-13 ⓘ |
| hasAlbedo |
about 0.23
ⓘ
lower than Orcus ⓘ |
| hasApproximateDiameter |
about 440 km
ⓘ
about 910 km ⓘ |
| hasApproximateSemiMajorAxis | about 39 AU ⓘ |
| hasColor | redder than Orcus ⓘ |
| hasColorContrastBetweenComponents | yes GENERATED ⓘ |
| hasComponent |
90482 Orcus
NERFINISHED
ⓘ
Vanth NERFINISHED ⓘ |
| hasDiscoveryMethod | telescopic observation ⓘ |
| hasEccentricity | about 0.22 ⓘ |
| hasInclinationToEcliptic | about 20 degrees ⓘ |
| hasNotableProperty |
components have relatively similar sizes
ⓘ
tight mutual orbit ⓘ |
| hasObservationFacility |
Hubble Space Telescope
NERFINISHED
ⓘ
ground-based large telescopes ⓘ |
| hasOrbitalPeriodAroundOrcus | about 9.5 days ⓘ |
| hasOrbitalPeriodAroundSun | about 247 Earth years ⓘ |
| hasOrbitalResonanceWithNeptune | 2:3 mean-motion resonance ⓘ |
| hasPrimary | 90482 Orcus NERFINISHED ⓘ |
| hasProvisionalDesignation | 2004 DW ⓘ |
| hasRotationPeriod | about 10 hours ⓘ |
| hasSatellite | Vanth NERFINISHED ⓘ |
| hasSecondary | Vanth NERFINISHED ⓘ |
| hasSemiMajorAxis | about 9000 km from Orcus ⓘ |
| hasSpectralEvidenceFor | water ice on primary ⓘ |
| hasSurfaceComposition |
possible ammonia or ammonium compounds
ⓘ
water ice ⓘ |
| hasTidalInteraction | strong ⓘ |
| hasTotalMass | on the order of 6×10^20 kg ⓘ |
| isClassifiedAs | plutino system ⓘ |
| isDynamicallySimilarTo | Pluto–Charon system NERFINISHED ⓘ |
| isLikelyTidallyLockedTo | 90482 Orcus NERFINISHED ⓘ |
| locatedIn |
Kuiper belt
NERFINISHED
ⓘ
Kuiper belt NERFINISHED ⓘ |
| mayBeTidallyLocked | likely ⓘ |
| namedAfter |
Orcus
NERFINISHED
ⓘ
Vanth NERFINISHED ⓘ |
| orbits |
90482 Orcus
NERFINISHED
ⓘ
Sun NERFINISHED ⓘ Sun NERFINISHED ⓘ |
| partOf | Orcus–Vanth system NERFINISHED ⓘ |
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
90482 Orcus