|
gptkbp:instanceOf
|
gptkb:exoplanet
|
|
gptkbp:atmosphere
|
possible hydrogen, helium, or water vapor
|
|
gptkbp:constellation
|
gptkb:cancer
|
|
gptkbp:containsPlanet
|
55 Cancri system
|
|
gptkbp:density
|
about 6.66 g/cm³
|
|
gptkbp:diameter
|
about 1.875 Earth radii
|
|
gptkbp:discoveredBy
|
gptkb:Geoffrey_Marcy
gptkb:R._Paul_Butler
|
|
gptkbp:discoveredIn
|
2004
|
|
gptkbp:discoveryMethod
|
radial velocity
|
|
gptkbp:distanceFromEarth
|
about 41 light-years
|
|
gptkbp:eccentricity
|
0.05
|
|
gptkbp:hasExtremeTemperatureVariation
|
true
|
|
gptkbp:hostedBy
|
gptkb:55_Cancri_A
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
55 Cancri e
|
|
gptkbp:IAUApprovedName
|
gptkb:Copernicus
|
|
gptkbp:isSuperEarth
|
true
|
|
gptkbp:isTidalLocked
|
likely
|
|
gptkbp:mass
|
about 8.08 Earth masses
|
|
gptkbp:namedAfter
|
gptkb:Nicolaus_Copernicus
|
|
gptkbp:numberOfKnownPlanetsInSystem
|
5
|
|
gptkbp:orbitType
|
0.7365 days
|
|
gptkbp:otherName
|
gptkb:Copernicus
|
|
gptkbp:possibleAtmosphereLoss
|
true
|
|
gptkbp:possibleSurfaceComposition
|
gptkb:volcanic_activity
rocky
|
|
gptkbp:publicTransit
|
true
|
|
gptkbp:semiMajorAxis
|
0.01544 AU
|
|
gptkbp:surfaceGravity
|
about 21 m/s²
|
|
gptkbp:temperature
|
about 2,300 K (dayside)
|
|
gptkbp:transitFirstObserved
|
2011
|
|
gptkbp:bfsParent
|
gptkb:Geoffrey_Marcy
gptkb:California_and_Carnegie_Planet_Search_Team
gptkb:HIP_43401
|
|
gptkbp:bfsLayer
|
8
|