|
gptkbp:instanceOf
|
hypothetical planet
|
|
gptkbp:alsoKnownAs
|
gptkb:Planet_X
|
|
gptkbp:category
|
hypothetical Solar System object
|
|
gptkbp:compatibleWith
|
true
|
|
gptkbp:debatedBy
|
astronomer
|
|
gptkbp:estimatedOrbitalPeriod
|
10,000 to 20,000 years
|
|
gptkbp:estimatedSemiMajorAxis
|
400 to 800 AU
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Planet Nine
|
|
gptkbp:hypothesizedToExplain
|
clustering of trans-Neptunian objects
|
|
gptkbp:influenced
|
orbits of extreme trans-Neptunian objects
|
|
gptkbp:locatedIn
|
gptkb:outer_Solar_System
|
|
gptkbp:mass
|
5 to 10 Earth masses
|
|
gptkbp:mediaCoverage
|
widespread since 2016
|
|
gptkbp:notToBeConfusedWith
|
gptkb:Nemesis_(hypothetical_star)
gptkb:Nibiru_cataclysm
|
|
gptkbp:orbitType
|
Sun
|
|
gptkbp:possibleDiscoveryMethod
|
direct imaging
infrared surveys
astrometric surveys
|
|
gptkbp:proposedBy
|
gptkb:Michael_E._Brown
gptkb:Konstantin_Batygin
|
|
gptkbp:relatedTo
|
gptkb:Kuiper_belt
gptkb:2012_VP113
gptkb:scattered_disc
gptkb:Sedna
trans-Neptunian objects
|
|
gptkbp:searchStatus
|
ongoing
|
|
gptkbp:yearProposed
|
2016
|
|
gptkbp:bfsParent
|
gptkb:Planet_X
|
|
gptkbp:bfsLayer
|
6
|