Exoplanet
Related Interpreter »Entity["Exoplanet",name] or 
represents an entity of type "Exoplanet".
[prop]
gives the value of a specified property.
[{propi,…}]
gives the value of a list of properties.
[prop,{qualivali,…}]
gives the value of a specified property modified by qualifier rules quali->vali.
[Dated[prop,date]]
gives the value of a property associated with a particular date specification.
EntityClass["Exoplanet",{propispeci,…}]
represents a class of entities with values of propi defined by speci.
Sample Entities
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Sample Entity Classes
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Properties
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AlphanumericName alphanumeric name AlternateNames alternate names Altitude altitude AltitudeTransit next transit altitude AngularDiameterFromEarth angular diameter AngularRadiusFromEarth angular radius ApparentAltitude apparent altitude AverageOrbitDistance average orbit distance Azimuth azimuth AzimuthRise azimuth at rise AzimuthSet azimuth at set BooleanRise above the horizon Classes classes Component component Constellation constellation DailyTimeAboveHorizon daily time above horizon Declination declination Density mean density Diameter average diameter DiameterInterval diameter interval DiscoveryDate discovery date DiscoveryMethod discovery method DistanceFromEarth distance from Earth DistanceFromSun distance from Sun DistanceInterval distance interval DurationTransit transit duration Eccentricity orbital eccentricity EccentricityInterval orbital eccentricity interval EntityClasses entity classes EntityTypeList entity type list EscapeVelocity escape velocity GalacticLatitude galactic latitude GalacticLongitude galactic longitude GeocentricEclipticLatitude geocentric ecliptic latitude GeocentricEclipticLongitude geocentric ecliptic longitude GravitationalConstantMassProduct gravitational constant mass product Gravity gravity GreenwichHourAngle Greenwich hour angle HeliocentricEclipticLatitude heliocentric ecliptic latitude HeliocentricEclipticLongitude heliocentric ecliptic longitude HelioCoordinates heliocentric XYZ coordinates Inclination orbital inclination InclinationInterval orbital inclination interval LocalHourAngle local hour angle MajorAxis orbital major axis Mass mass MassInterval mass interval MaximalAltitudeTime next maximum altitude time MinorAxis orbital minor axis MomentOfInertia rotational moment of inertia Name name ObjectType object type OrbitCenter orbit center OrbitCircumference orbit circumference OrbitPeriod orbital period OrbitPeriodInterval orbital period interval PeriapsisLongitude longitude of periapsis ϖ PeriapsisLongitudeInterval longitude of periapsis interval PlanetaryEquilibriumTemperature planetary equilibrium temperature PlanetaryEquilibriumTemperatureInterval planetary equilibrium temperature interval PrimaryStarKSemiamplitude primary star K semiamplitude Radius average radius RadiusInterval average radius interval RightAscension right ascension RiseTime next rise RocheLimit Roche limit SemimajorAxis orbital semimajor axis SemimajorAxisInterval orbital semimajor axis interval SemiminorAxis orbital semiminor axis SetTime next set SiderealHourAngle sidereal hour angle SurfaceArea surface area TransitDepth transit depth TransitTime next transit time Volume volume ZenithAngle zenith angle
Details
- "Exoplanet" entities include a large collection of confirmed planets beyond the solar system.
- "Exoplanet" entity classes include groups based primarily on size classification, e.g. "super-Earths", which may also include proximity to host stars, e.g. "hot Jupiters".
- Some properties are available for the "Exoplanet" entity type as a whole and can be given using the form EntityValue["Exoplanet",property]. Such properties include:
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"Properties" the list of available properties "PropertyCanonicalNames" the standard names of available properties "SampleEntities" a sample list of available entities (typically of length 10) "SampleEntityClasses" a sample list of available entity classes (typically of length 10) "EntityCount" number of entities available "Entities" the list of available entities "EntityCanonicalNames" the standard names of available entities "EntityClasses" the list of available entity classes "EntityClassCanonicalNames" the standard names of available entity classes "PropertyClasses" the list of available property classes "PropertyClassCanonicalNames" the standard names of available property classes "PropertyCount" number of properties available - The following annotations can be used in the third argument of EntityValue["Exoplanet",property,annotation]:
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"Source" source information for the property "Date" the date associated with the entity-property value (if any) "EntityAssociation" an association of entities and entity-property values "PropertyAssociation" an association of properties and entity-property values "EntityPropertyAssociation" an association in which the specified entities are keys, and values are a nested association of properties and entity-property values "PropertyEntityAssociation" an association in which the specified properties are keys, and values are a nested association of entities and entity-property values "Dataset" a dataset in which the specified entities are keys, and values are an association of property names and entity-property values - The following annotations can be used in the second argument of EntityValue[property,annotation]:
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"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 "PhysicalQuantity" the physical quantity associated with the entity-property value "Unit" the unit associated with the entity-property value - A qualifier value of Automatic indicates that an applicable format of values can be used; e.g. for the "Date" qualifier, this includes a proper date or date span.
Examples
open allclose allBasic Examples (5)
for discovery:Scope (5)
Implicit Entity Classes (1)
The habitable zone of an exoplanet is an ambiguous concept with no agreed-upon definition. There are several ways to go about determining what you might interpret as the habitable zone. All methods have a relation to their host stars. The planetary equilibrium temperature is a form of blackbody temperature for a given planet. It does not take into account greenhouse gases or other factors that could influence habitability of a planet. You can query for planets in a given system that have a planetary equilibrium temperature between 0 and 100 degrees Celsius:
There are other ways of determining the habitable zone, such as that described in Whitmire, D. and Reynolds, R., "Circumstellar Habitable Zones: Astronomical Considerations," in Doyle, L. (ed.), Circumstellar Habitable Zones, Proceedings of the First International Conference, Travis House Publications, 1996: 117–142. This method allows you to determine an inner and outer radius of the habitable zone around a star:
Property Classes (1)
Qualifiers (3)
Some properties accept qualifiers:
The "Location" qualifier, which specifies the location of the observer, can accept an explicit GeoPosition, location-based Entity objects or queries that evaluate to one of these:
Dates (1)
Date qualifiers can accept an explicit DateObject or queries that evaluate to a DateObject:
Date qualifiers can also be specified using Dated:
Applications (7)
Create a chart showing the number of exoplanets discovered per year:
Create a chart plotting the radius versus the mass:
Create a chart plotting the mass versus the orbital period, colored by discovery method:
Create a chart plotting the density versus the radius:
Create a chart plotting the orbital eccentricity versus the orbital period, colored by discovery method:
Create a chart plotting the density versus the radius:
For each exoplanet, find all of the other exoplanets in the system:
Gather the data based on the number of exoplanets in the system:
Plot eccentricity versus the semimajor axis for systems containing one, two or three exoplanets:
Exoplanet Source Information