|
gptkbp:instanceOf
|
hypothetical astronomical structure
|
|
gptkbp:alsoKnownAs
|
gptkb:Oort_cloud
|
|
gptkbp:believedToBeSourceOf
|
long-period comets
|
|
gptkbp:composedOf
|
ices (water, ammonia, methane)
|
|
gptkbp:contains
|
icy planetesimals
|
|
gptkbp:distanceFromEarth
|
2,000 to 100,000 AU
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Öpik–Oort cloud
|
|
gptkbp:influencedBy
|
molecular clouds
galactic tides
passing stars
|
|
gptkbp:innerRegion
|
gptkb:Hills_cloud
|
|
gptkbp:locatedIn
|
gptkb:outer_Solar_System
|
|
gptkbp:mass
|
several Earth masses
|
|
gptkbp:namedAfter
|
gptkb:Jan_Oort
gptkb:Ernst_Öpik
|
|
gptkbp:notDirectlyObserved
|
true
|
|
gptkbp:origin
|
gptkb:Halley-type_comets
dormant comets
extinct comets
some centaurs
some trans-Neptunian objects
|
|
gptkbp:outerBoundaryOf
|
gptkb:Solar_System
|
|
gptkbp:outerRegion
|
Oort cloud proper
|
|
gptkbp:partOf
|
gptkb:Solar_System
|
|
gptkbp:proposedBy
|
gptkb:Jan_Oort
gptkb:Ernst_Öpik
1932
1950
|
|
gptkbp:relatedTo
|
gptkb:Kuiper_belt
gptkb:scattered_disc
|
|
gptkbp:shape
|
spherical
|
|
gptkbp:bfsParent
|
gptkb:Oort_Cloud
|
|
gptkbp:bfsLayer
|
5
|