# OEMEphemeris


Ephemeris data in Orbit Ephemeris Message (OEM) format.

 AWS Ground Station processes OEM ephemerides according to the [CCSDS standard](https://ccsds.org/Pubs/502x0b3e1.pdf) with some extra restrictions. OEM files should be in KVN format. For more detail about the OEM format that AWS Ground Station supports, see [OEM ephemeris format](https://docs.aws.amazon.com/ground-station/latest/ug/providing-oem-ephemeris-data.html#oem-ephemeris-format) in the AWS Ground Station user guide. 

## Contents


 ** oemData **   <a name="groundstation-Type-OEMEphemeris-oemData"></a>
OEM data that you provide directly instead of using an Amazon S3 object.  
Type: String  
Length Constraints: Minimum length of 1.  
Pattern: `[\s\S]+`   
Required: No

 ** s3Object **   <a name="groundstation-Type-OEMEphemeris-s3Object"></a>
The Amazon S3 object that contains the ephemeris data.  
Type: [S3Object](API_S3Object.md) object  
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/OEMEphemeris) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/groundstation-2019-05-23/OEMEphemeris) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/groundstation-2019-05-23/OEMEphemeris)