Quaoar

E81703

Quaoar is a large, distant trans-Neptunian object in the Kuiper Belt, notable for its nearly circular orbit and for having a small moon named Weywot.

All labels observed (5)

Label Occurrences
Quaoar canonical 9
(50000) Quaoar 1
50000 Quaoar 1

How this entity was disambiguated

Statements (48)

Predicate Object
instanceOf Kuiper Belt object
cubewano
dwarf-planet candidate
minor planet
trans-Neptunian object
catalogDesignation (50000) Quaoar
linked to: Quaoar
discoveredBy Chad Trujillo
Michael E. Brown
discoveryDate 2002-06-04
discoverySite Palomar Observatory
discoveryStatus numbered minor planet
hasAbsoluteMagnitude about 2.6
hasAlbedo about 0.10
hasAphelionDistance about 45.5 AU
hasDensity about 2.0 g/cm³
hasMass about 1.4e21 kg
hasMeanDiameter about 1110 km
hasMoon Weywot
hasNearlyCircularOrbit true
hasOrbitalEccentricity 0.038
hasOrbitalInclination 8.0 degrees
hasOrbitalPeriod about 286 Earth years
hasPerihelionDistance about 41.9 AU
hasRadius about 555 km
hasRingSystem yes
hasRotationPeriod about 17.7 hours
hasSatellite Weywot
hasSemiMajorAxis about 43.7 AU
hasSpectralType neutral to moderately red
hasSurfaceComposition ammonia hydrates
methane ice
water ice
hasSurfaceTemperature about 44 K
isInResonanceWith none (classical Kuiper Belt object)
isLargerThan most Kuiper Belt objects
isSmallerThan Eris
Pluto
locatedIn Kuiper Belt
mpcNumber 50000
namedAfter Tongva creator deity Qua-o-ar
linked to: Tongva
orbitalRegion trans-Neptunian region
orbits Sun
ringDiscoveredBy Bruno Morgado
collaborators using stellar occultations
ringDiscoveryDate 2023
ringLocation outside Quaoar Roche limit
satelliteDiscoveredBy Michael E. Brown
satelliteDiscoveryDate 2007

How these facts were elicited

Referenced by (13)

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

Kuiper Belt object example Quaoar
subject linked to: Kuiper Belt objects
Quaoar catalogDesignation (50000) Quaoar
linked to: Quaoar
Chad Trujillo coDiscovererOf 50000 Quaoar
linked to: Quaoar
Kuiper Belt contains dwarf planet Quaoar (candidate)
linked to: Quaoar
Weywot orbits Quaoar
Weywot partOf Quaoar system
linked to: Quaoar
Weywot primaryBody Quaoar
Bruno Morgado studied Quaoar