For general access to the Wolfram Knowledgebase, use entities of type Exoplanet instead of ExoplanetData.


gives the value of the specified property for the exoplanet entity.


gives a list of property values for the specified exoplanet entities.


gives the specified annotation associated with the given property.


  • ExoplanetData[] gives a list of all exoplanet entities.
  • ExoplanetData["Properties"] gives a list of available properties.
  • The specified entity in ExoplanetData can be an Entity, EntityClass, entity canonical name, or list thereof.
  • The specified property can be an EntityProperty, EntityPropertyClass, property canonical name, or list of properties.
  • Properties that do not apply or are not known in a particular case are indicated by Missing[].
  • Properties include:
  • "AlphanumericName"alphanumeric name
    "AlternateNames"alternate names
    "AltitudeTransit"next transit altitude
    "ApparentAltitude"apparent altitude
    "AverageOrbitDistance"average orbit distance
    "AzimuthRise"azimuth at rise
    "AzimuthSet"azimuth at set
    "BooleanRise"above the horizon
    "DailyTimeAboveHorizon"daily time above horizon
    "Density"mean density
    "Diameter"average diameter
    "DiameterInterval"lower and upper bounds of the diameter
    "DiscoveryMethod"discovery method
    "DiscoveryYear"discovery year
    "DistanceFromEarth"distance from Earth
    "DistanceFromSun"distance from Sun
    "DistanceInterval"lower and upper bounds of the distance from Earth
    "DurationTransit"transit duration
    "Eccentricity"orbital eccentricity
    "EccentricityInterval"lower and upper bounds of the eccentricity
    "EscapeVelocity"escape velocity
    "GalacticLatitude"galactic latitude
    "GalacticLongitude"galactic longitude
    "GravitationalConstantMassProduct"gravitational constant mass product
    "GreenwichHourAngle"Greenwich hour angle
    "HelioCoordinates"heliocentric XYZ coordinates
    "Inclination"orbital inclination
    "InclinationInterval"lower and upper bounds of the inclination
    "LocalHourAngle"local hour angle
    "MajorAxis"major axis
    "MassInterval"lower and upper bounds of the mass
    "MaximalAltitudeTime"next maximum altitude time
    "MinorAxis"minor axis
    "MomentOfInertia"rotational moment of inertia
    "OrbitCenter"orbit center
    "OrbitCircumference"orbit circumference
    "OrbitPeriod"orbital period
    "OrbitPeriodInterval"lower and upper bounds of the orbital period
    "PeriapsisLongitude"longitude of periapsis
    "PeriapsisLongitudeInterval"lower and upper bounds of the longitude of periapsis
    "PlanetaryEquilibriumTemperature"planetary equilibrium temperature
    "PlanetaryEquilibriumTemperatureInterval"lower and upper bounds of the planetary equilibrium temperature
    "PrimaryStarKSemiamplitude"primary star K semiamplitude
    "Radius"average radius
    "RadiusInterval"lower and upper bounds of the radius
    "RightAscension"right ascension
    "RiseTime"next rise
    "RocheLimit"Roche limit
    "SemimajorAxis"semimajor axis
    "SemimajorAxisInterval"lower and upper bounds of the semimajor axis
    "SemiminorAxis"semiminor axis
    "SetTime"next set
    "SiderealHourAngle"sidereal hour angle
    "SurfaceArea"surface area
    "TransitDepth"transit depth
    "TransitTime"next transit time
  • Some properties are available for ExoplanetData as a whole and can be given using the form ExoplanetData[property]. Such properties include:
  • "Entities"all available entities
    "EntityCount"total number of available entities
    "Classes"all available entity classes
    "EntityClassCount"total number of available entity classes
    "SampleEntities"list of sample entities
    "SampleEntityClasses"list of sample entity classes
    "EntityCanonicalNames"list of all entity canonical names
    "PropertyCanonicalNames"list of all property canonical names
    "EntityClassCanonicalNames"list of all entity class canonical names
    "RandomEntities"pseudorandom sample entities
    {"RandomEntities",n}n pseudorandom entities
    "RandomEntityClasses"pseudorandom sample entity classes
    {"RandomEntityClasses",n}n pseudorandom entity classes
  • The following annotations can be used in the third argument of ExoplanetData[entity,property,annotation]:
  • "Qualifiers"the list of possible qualifiers for the property
    "QualifierValues"the list of possible values that can be given to each qualifier
    "DefaultQualifierValues"the list of default values for the property's qualifiers
    "Description"a brief textual description of the property
    "Definition"a detailed textual definition of the property
    "Source"source information for the property
    "Date"the date associated with the entity-property value (if any)
    "PhysicalQuantity"the physical quantity associated with the entity-property value
    "Unit"the unit associated with the entity-property value
    "EntityAssociation"an association of entities and entity-property values
    "PropertyAssociation"an association of properties and entity-property values
  • If a function is provided as an annotation, it will be used to aggregate the result data. Typical aggregation functions include:
  • Minthe minimum value
    Maxthe maximum value
    Meanthe mean value
    Commonestthe most frequently occurring value
    Medianthe median value
    Totalreturns the total
    Lengththe number of elements


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Basic Examples  (3)

Use for discovery:

Click for copyable input

Find the mass of an exoplanet:

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Get a list of exoplanets in a specified class:

Click for copyable input

Scope  (3)

Applications  (8)

Introduced in 2014