--- title: "DeepSpaceProbe" language: "en" type: "Entity" summary: "Deep space probes that explore beyond the confines of Earth's orbit." canonical_url: "https://reference.wolfram.com/language/ref/entity/DeepSpaceProbe.html" source: "Wolfram Language Documentation" related_guides: - title: "Entity Types" link: "https://reference.wolfram.com/language/guide/EntityTypes.en.md" --- # DeepSpaceProbe Deep space probes that explore beyond the confines of Earth's orbit. [Related Interpreter](https://reference.wolfram.com/language/ref/interpreter/DeepSpaceProbe.en.md) Entity["DeepSpaceProbe", name] or Entity[...] represents an entity of type "DeepSpaceProbe". Entity[...][prop] gives the value of a specified property. Entity[...][{propi, …}] gives the value of a list of properties. Entity[...][prop, {quali -> vali, …}] gives the value of a specified property modified by qualifier rules quali -> vali. Entity[...][Dated[prop, date]] gives the value of a property associated with a particular date specification. EntityClass["DeepSpaceProbe", {propi -> speci, …}] represents a class of entities with values of propi defined by speci. ## Sample Entities * Entity["DeepSpaceProbe", "MarsScienceLaboratory"]Entity["DeepSpaceProbe", "NEWHorizons"]Entity["DeepSpaceProbe", "Cassini"]Entity["DeepSpaceProbe", "Voyager2"]Entity["DeepSpaceProbe", "MarsPolarLander"]Entity["DeepSpaceProbe", "MERDashBOpportunityRover"]Entity["DeepSpaceProbe", "Ulysses"]Entity["DeepSpaceProbe", "Vega1DescentCraft"]Entity["DeepSpaceProbe", "Venera5"]Entity["DeepSpaceProbe", "VikingLander1"]**…** ## Sample Entity Classes * EntityClass["DeepSpaceProbe", "CometMission"]EntityClass["DeepSpaceProbe", "JupiterFlyby"]EntityClass["DeepSpaceProbe", "JupiterMission"]EntityClass["DeepSpaceProbe", "MarsFlyby"]EntityClass["DeepSpaceProbe", "MarsImpactor"]EntityClass["DeepSpaceProbe", "MercuryOrbiter"]EntityClass["DeepSpaceProbe", "PlanetFlyby"]EntityClass["DeepSpaceProbe", "VenusFlyby"]EntityClass["DeepSpaceProbe", "Comet19PBorrellyMission"]EntityClass["DeepSpaceProbe", "Comet67PChuryumovGerasimenkoMission"]**…** ## Properties | | | | ---------------------- | ------------------------------------- | | Altitude | altitude | | Arrivals | arrival date | | AscendingNodeLongitude | longitude of ascending node Ω | | AverageSurfaceSpeed | average surface speed | | AverageVelocity | average velocity | | Azimuth | azimuth | | Classes | classes | | Contractors | contractors | | CountryOfOperatorOwner | operator countries | | Declination | declination | | DistanceFromEarth | distance from Earth | | DistanceFromSun | distance from Sun | | DryMass | dry mass | | Eccentricity | orbital eccentricity | | EnergyGenerationRate | energy generation rate | | EntityClasses | entity classes | | EntityTypeList | entity type list | | FinalDistanceTraveled | total distance traveled | | FrequencyBand | frequency band | | Height | height | | HelioCoordinates | heliocentric ecliptic XYZ coordinates | | HelioVelocityVector | heliocentric velocity vector | | Image | image | | ImpactDate | impact date | | ImpactType | impact type | | Inclination | orbital inclination | | LandingPosition | coordinates | | LaunchDate | launch date | | LaunchMass | launch mass | | LaunchSite | launch site | | LaunchVehicle | launch vehicle | | Length | length | | MaximumElectricalPower | maximum electrical power | | MaximumSurfaceSpeed | maximum surface speed | | MaximumThermalPower | maximum thermal power | | MeanMotion | mean motion | | MissionDuration | mission duration | | MissionEndDate | mission end date | | Name | name | | NORADNumber | NORAD number | | NSSDCID | international designator | | NuclearFuelMass | nuclear fuel mass | | NuclearFuelSource | nuclear fuel source | | OrbitCenter | orbit center | | OrbitGraphic | orbit graphic | | OrbitPath | orbit path | | PeriapsisArgument | argument of periapsis ω | | Position | position | | PowerSource | power source | | RightAscension | right ascension | | SemimajorAxis | semimajor axis | | SemiminorAxis | semiminor axis | | SunAngle | sun angle | | Target | target | | Velocity | heliocentric velocity | | WheelCount | number of wheels | | Width | width | ## Details * ``"DeepSpaceProbe"`` entities include a large collection of space probes launched beyond the Earth environment by many countries and organizations. * ``"DeepSpaceProbe"`` entity classes include groups based on the astronomical body being explored as well as the type of mission, such as flyby, orbiter, lander, etc. * Some properties are available for the ``"DeepSpaceProbe"`` entity type as a whole and can be given using the form ``EntityValue["DeepSpaceProbe", property]``. Such properties include: | | | | ----------------------------- | ------------------------------------------------------------------ | | "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["DeepSpaceProbe", property, annotation]`` : | | | | --- | --- | | "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]`` : | | | | ------------------------ | --------------------------------------------------------------- | | "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 (11) ### Basic Examples (4) Use ctrl+= for entity discovery: ```wl In[1]:= \[FreeformPrompt]["Curiosity rover"] Out[1]= Entity["DeepSpaceProbe", "MarsScienceLaboratory"] ``` --- Find a property value for an entity: ```wl In[1]:= Entity["DeepSpaceProbe", "Ranger3"]["LaunchDate"] Out[1]= DateObject[{1962, 1, 26}, "Day"] ``` --- Retrieve a dataset of all available properties for an entity: ```wl In[1]:= Entity["DeepSpaceProbe", "Viking1Orbiter"]["Dataset"]//DeleteMissing Out[1]= Dataset[Association[EntityProperty["DeepSpaceProbe", "Arrivals"] -> Association[Entity["Planet", "Mars"] -> DateObject[{1976, 6, 19}, "Day"]], EntityProperty["DeepSpaceProbe", "Classes"] -> {EntityClass["DeepSpaceProbe", "DeepSpaceProbe"], ... ], EntityClass["DeepSpaceProbe", "PlanetMission"], EntityClass["DeepSpaceProbe", "PlanetOrbiter"]}, EntityProperty["Thing", "EntityTypeList"] -> {EntityType["DeepSpaceProbe"]}, EntityProperty["Thing", "Name"] -> "Viking 1 orbiter"]] ``` --- Find the probes that have traveled the greatest distance from the Sun: ```wl In[1]:= EntityClass["DeepSpaceProbe", "DistanceFromSun" -> TakeLargest[5]]//EntityList Out[1]= {Entity["DeepSpaceProbe", "Voyager1"], Entity["DeepSpaceProbe", "Voyager2"], Entity["DeepSpaceProbe", "Pioneer10"], Entity["DeepSpaceProbe", "Pioneer11"], Entity["DeepSpaceProbe", "NEWHorizons"]} ``` ### Scope (4) #### Qualifiers (4) ##### Dates (4) Some properties allow you to specify dates: ```wl In[1]:= EntityValue[ EntityProperty["DeepSpaceProbe", "Declination"], "Qualifiers"] Out[1]= {"Date"} In[2]:= EntityValue[Entity["DeepSpaceProbe", "Voyager2"], EntityProperty["DeepSpaceProbe", "Declination", {"Date" -> DateObject[{2013, 4, 5, 19, 30, 0}, TimeZone -> -5]}]] Out[2]= Quantity[MixedMagnitude[{-55, -48.}], MixedUnit[{"AngularDegrees", "ArcMinutes"}]] ``` --- Some properties allow you to specify dates and locations: ```wl In[1]:= EntityValue[EntityProperty["DeepSpaceProbe", "Altitude"], "Qualifiers"] Out[1]= {"Date", "Location"} In[2]:= EntityValue[Entity["DeepSpaceProbe", "Voyager1"], EntityProperty["DeepSpaceProbe", "Altitude", {"Date" -> DateObject[{2013, 4, 3, 20, 0, 0}, TimeZone -> -5], "Location" -> Entity["City", {"SanFrancisco", "California", "UnitedStates"}]}]] Out[2]= Quantity[MixedMagnitude[{-39, -32.}], MixedUnit[{"AngularDegrees", "ArcMinutes"}]] ``` --- Date qualifiers can accept an explicit ``DateObject`` or queries that evaluate to a ``DateObject`` : ```wl In[1]:= EntityValue[Entity["DeepSpaceProbe", "Pioneer10"], EntityProperty["DeepSpaceProbe", "Declination", {"Date" -> #}]]& /@ {DateObject[{2014, 4, 9, 22, 0, 0}, TimeZone -> -5], \[FreeformPrompt]["birth date of Willow Smith"]} Out[1]= {Quantity[MixedMagnitude[{25, 56.}], MixedUnit[{"AngularDegrees", "ArcMinutes"}]], Quantity[MixedMagnitude[{25, 54.}], MixedUnit[{"AngularDegrees", "ArcMinutes"}]]} ``` --- Location qualifiers can accept an explicit ``GeoPosition``, location-based ``Entity`` objects, or queries that evaluate to one of these: ```wl In[1]:= EntityValue[\[FreeformPrompt]["Pioneer 11"], EntityProperty["DeepSpaceProbe", "Altitude", {"Location" -> #}]]& /@ {GeoPosition[{40.1, -88.2}], \[FreeformPrompt]["Joplin"], \[FreeformPrompt]["capital city of Iowa"]} Out[1]= {Quantity[MixedMagnitude[{-33, -16.}], MixedUnit[{"AngularDegrees", "ArcMinutes"}]], Quantity[MixedMagnitude[{-38, -55.}], MixedUnit[{"AngularDegrees", "ArcMinutes"}]], Quantity[MixedMagnitude[{-36, -33.}], MixedUnit[{"AngularDegrees", "ArcMinutes"}]]} ``` ### Relations to Other Entity Types (1) Use ``"SolarSystemFeature" entities`` and ``GeoGraphics`` to plot the position of landers: ```wl In[1]:= With[{probe = EntityValue[Entity["DeepSpaceProbe", "MarsScienceLaboratory"], "Position"], feat = Entity["SolarSystemFeature", "GaleMars"]}, GeoGraphics[{Red, PointSize[.02], Point[probe]}, GeoCenter -> feat, GeoRange -> SolarSystemFeatureData[feat, "Size"] / 2]] Out[1]= [image] ``` ### Neat Examples (2) Plot counts of space probe launches by decade: ```wl In[1]:= Histogram[(Function[x, Quotient[#[[1, 1]], 10] * 10& /@ x] /@ SplitBy[(EntityValue["DeepSpaceProbe", "LaunchDate"]//Flatten//Tally)[[All, 1]]//Sort, Quotient[Mod[#[[1, 1]], 100], 10]&]), ChartLabels -> Placed[{"1950s", "1960s", "1970s", "1980s", "1990s", "2000s", "2010s", "2020s"}, Above], Axes -> {False, True}, LabelingFunction -> None, AxesLabel -> {None, "# of launches"}, ImageSize -> Medium] Out[1]= [image] ``` --- Create a map showing the locations of Mars landers: ```wl In[1]:= GeoListPlot[EntityClass["DeepSpaceProbe", "MarsLander"], GeoRange -> All, GeoLabels -> True] Out[1]= [image] ``` ## See Also * [`Satellite`](https://reference.wolfram.com/language/ref/entity/Satellite.en.md) * [`Rocket`](https://reference.wolfram.com/language/ref/entity/Rocket.en.md) * [`MannedSpaceMission`](https://reference.wolfram.com/language/ref/entity/MannedSpaceMission.en.md) * [`DeepSpaceProbe`](https://reference.wolfram.com/language/ref/interpreter/DeepSpaceProbe.en.md) * [`DeepSpaceProbeClass`](https://reference.wolfram.com/language/ref/interpreter/DeepSpaceProbeClass.en.md) * [`ComputedDeepSpaceProbe`](https://reference.wolfram.com/language/ref/interpreter/ComputedDeepSpaceProbe.en.md) * [`DeepSpaceProbe`](https://reference.wolfram.com/language/ref/textcontent/DeepSpaceProbe.en.md) ## Related Guides * [Entity Types](https://reference.wolfram.com/language/guide/EntityTypes.en.md) ## History * [Introduced in 2019 (12.0)](https://reference.wolfram.com/language/guide/SummaryOfNewFeaturesIn120.en.md)