# EphemerisMetaData


Metadata describing a particular ephemeris.

## Contents


 ** source **   <a name="groundstation-Type-EphemerisMetaData-source"></a>
The `EphemerisSource` that generated a given ephemeris.  
Type: String  
Valid Values: `CUSTOMER_PROVIDED | SPACE_TRACK`   
Required: Yes

 ** ephemerisId **   <a name="groundstation-Type-EphemerisMetaData-ephemerisId"></a>
UUID of a customer-provided ephemeris.  
This field is not populated for default ephemerides from Space Track.  
Type: String  
Length Constraints: Fixed length of 36.  
Pattern: `[a-f0-9]{8}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{12}`   
Required: No

 ** epoch **   <a name="groundstation-Type-EphemerisMetaData-epoch"></a>
The epoch of a default, ephemeris from Space Track in UTC.  
This field is not populated for customer-provided ephemerides.  
Type: Timestamp  
Required: No

 ** name **   <a name="groundstation-Type-EphemerisMetaData-name"></a>
A name string associated with the ephemeris. Used as a human-readable identifier for the ephemeris.  
A name is only returned for customer-provider ephemerides that have a name associated.  
Type: String  
Length Constraints: Minimum length of 1. Maximum length of 256.  
Pattern: `[ a-zA-Z0-9_:-]{1,256}`   
Required: No

## See Also


For more information about using this API in one of the language-specific AWS SDKs, see the following:
+  [AWS SDK for C\$1\$1](https://docs.aws.amazon.com/goto/SdkForCpp/groundstation-2019-05-23/EphemerisMetaData) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/groundstation-2019-05-23/EphemerisMetaData) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/groundstation-2019-05-23/EphemerisMetaData)