Orcus–Vanth system

E1026163

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.

All labels observed (1)

Label Occurrences
Orcus–Vanth system canonical 5

How this entity was disambiguated

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
David Rabinowitz
linked to: David L. Rabinowitz

Michael E. Brown
Michael E. Brown
discoveredWith Hubble Space Telescope
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
hasComponent 90482 Orcus
Vanth
hasDiscoveryMethod telescopic observation
hasEccentricity about 0.22
hasInclinationToEcliptic about 20 degrees
hasNotableProperty components have relatively similar sizes
tight mutual orbit
hasObservationFacility Hubble Space Telescope
ground-based large telescopes
hasOrbitalPeriodAroundOrcus about 9.5 days
hasOrbitalPeriodAroundSun about 247 Earth years
hasOrbitalResonanceWithNeptune 2:3 mean-motion resonance
hasPrimary 90482 Orcus
hasProvisionalDesignation 2004 DW
hasRotationPeriod about 10 hours
hasSatellite Vanth
hasSecondary Vanth
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
isLikelyTidallyLockedTo 90482 Orcus
locatedIn Kuiper belt
linked to: Kuiper Belt

Kuiper belt
linked to: Kuiper Belt
mayBeTidallyLocked likely
namedAfter Orcus
Vanth
orbits 90482 Orcus
Sun
Sun
partOf Orcus–Vanth system

How these facts were elicited

Referenced by (5)

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

Vanth partOf Orcus–Vanth system
2004 DW hasBinarySystem Orcus–Vanth system
90482 Orcus hasSystem Orcus–Vanth system
subject linked to: 90482 Orcus (2004 DW)
Vanth partOf Orcus–Vanth system
subject linked to: Orcus–Vanth system
Orcus hasSystem Orcus–Vanth system
subject linked to: dwarf planet Orcus