---
title: "Rocket"
language: "en"
type: "Entity"
summary: "Notable manned and unmanned rockets."
canonical_url: "https://reference.wolfram.com/language/ref/entity/Rocket.html"
source: "Wolfram Language Documentation"
related_guides: 
  - 
    title: "Entity Types"
    link: "https://reference.wolfram.com/language/guide/EntityTypes.en.md"
---
# Rocket

Notable manned and unmanned rockets.		[Related Interpreter](https://reference.wolfram.com/language/ref/interpreter/Rocket.en.md)

Entity["Rocket", name] or Entity[...] represents an entity of type "Rocket".

Entity[...][prop] gives the value of a specified property.

Entity[...][{propi, …}] gives the value of a list of properties.

EntityClass["Rocket", {propi -> speci, …}] represents a class of entities with values of propi defined by speci.

## Sample Entities

* Entity["Rocket", "Athena"]Entity["Rocket", "AtlasI"]Entity["Rocket", "DeltaIII"]Entity["Rocket", "Energia"]Entity["Rocket", "HI"]Entity["Rocket", "Kosmos3"]Entity["Rocket", "LongMarch3"]Entity["Rocket", "N1"]Entity["Rocket", "ScoutX1"]Entity["Rocket", "TitanIIGLV"]**…**

## Sample Entity Classes

* EntityClass["Rocket", {"ConstructionStatus", "Completed"}]EntityClass["Rocket", {"ConstructionStatus", "Proposed"}]EntityClass["Rocket", {"ConstructionStatus", "UnderConstruction"}]**…**

## Properties

|                 |                     |
| --------------- | ------------------- |
| CountryOfOrigin | country of origin   |
| Diameter        | diameter            |
| EntityClasses   | entity classes      |
| EntityTypeList  | entity type list    |
| Failures        | failed launches     |
| FirstFlight     | first flight        |
| Function        | function            |
| Height          | height              |
| Image           | image               |
| LastFlight      | final flight        |
| LaunchPositions | launch coordinates  |
| LaunchSites     | launch sites        |
| Mass            | mass                |
| Name            | name                |
| Successes       | successful launches |
| TotalLaunches   | total launches      |

## Details

* ``"Rocket"`` entities include notable rockets that have been proposed or constructed for manned and unmanned launches into space.

* ``"Rocket"`` entity classes include collections of rockets grouped by their construction status.

* Some properties are available for the ``"Rocket"`` entity type as a whole and can be given using the form ``EntityValue["Rocket", 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["Rocket", 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 (4)

### Basic Examples (4)

Use ctrl+= for entity discovery:

```wl
In[1]:= [image]

Out[1]= Entity["Rocket", "TitanIIGLV"]
```

---

Find a property value for an entity:

```wl
In[1]:= Entity["Rocket", "SoyuzU"]["TotalLaunches"]

Out[1]= 786
```

---

Retrieve a dataset of all available properties for an entity:

```wl
In[1]:= Entity["Rocket", "SaturnV"]["Dataset"]

Out[1]=
Dataset[Association[EntityProperty["Rocket", "CountryOfOrigin"] -> 
   {Entity["Country", "UnitedStates"]}, EntityProperty["Rocket", "Diameter"] -> 
   Quantity[33., "Feet"], EntityProperty["Rocket", "Failures"] -> 0, 
  EntityProperty["Rocket", "F ... es"] -> 13, 
  EntityProperty["Thing", "EntityClasses"] -> 
   {EntityClass["Rocket", {"ConstructionStatus", "Completed"}]}, 
  EntityProperty["Thing", "EntityTypeList"] -> {EntityType["Rocket"]}, 
  EntityProperty["Thing", "Name"] -> "Saturn V"]]
```

---

Find the 10 rockets with the smallest diameter:

```wl
In[1]:= EntityClass["Rocket", "Diameter" -> TakeSmallest[10]]//EntityList

Out[1]= {Entity["Rocket", "SpaceLoftXL"], Entity["Rocket", "Lambda4S"], Entity["Rocket", "BlackKnight"], Entity["Rocket", "SLV"], Entity["Rocket", "ScoutX1"], Entity["Rocket", "ScoutX1A"], Entity["Rocket", "ScoutX2"], Entity["Rocket", "VLS1"], Entity["Rocket", "BlueScoutI"], Entity["Rocket", "BlueScoutII"]}
```

## See Also

* [`Satellite`](https://reference.wolfram.com/language/ref/entity/Satellite.en.md)
* [`DeepSpaceProbe`](https://reference.wolfram.com/language/ref/entity/DeepSpaceProbe.en.md)
* [`MannedSpaceMission`](https://reference.wolfram.com/language/ref/entity/MannedSpaceMission.en.md)
* [`Rocket`](https://reference.wolfram.com/language/ref/interpreter/Rocket.en.md)
* [`ComputedRocket`](https://reference.wolfram.com/language/ref/interpreter/ComputedRocket.en.md)
* [`Rocket`](https://reference.wolfram.com/language/ref/textcontent/Rocket.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)