---
title: "GET /udl/ephemerisset"
method: GET
path: "/udl/ephemerisset"
tags: ["Ephemeris"]
---

# GET /udl/ephemerisset

`GET /udl/ephemerisset`

## Request

- Base URL: `https://unifieddatalibrary.com`
- URL: `https://unifieddatalibrary.com/udl/ephemerisset`
- Auth: none declared

Service operation to dynamically query data by a variety of query parameters not specified in this API documentation. See the queryhelp operation (`/udl/<datatype>/queryhelp`) for more details on valid/required query parameter information.

## Query parameters

- `pointEndTime` string, date-time
- `pointStartTime` string, date-time
- `firstResult` integer
- `maxResults` integer

## Response `200`

OK

- EphemerisSetAbridged[]
  - `id` string: Unique identifier of the record, auto-generated by the system.
  - `classificationMarking` string, required: Classification marking of the data in IC/CAPCO Portion-marked format.
  - `idOnOrbit` string: Unique identifier of the primary satellite on-orbit object.
  - `origObjectId` string: Optional identifier provided by ephemeris source to indicate the target object of this ephemeris. This may be an internal identifier and not necessarily map to a valid satellite number.
  - `pointStartTime` string, date-time, required: Start time/first time point of the ephemeris, in ISO 8601 UTC format.
  - `usableStartTime` string, date-time: Optional start time of the usable time span for the ephemeris data, in ISO 8601 UTC format with microsecond precision.
  - `pointEndTime` string, date-time, required: End time/last time point of the ephemeris, in ISO 8601 UTC format.
  - `usableEndTime` string, date-time: Optional end time of the usable time span for the ephemeris data, in ISO 8601 UTC format with microsecond precision.
  - `stepSize` integer: Ephemeris step size, in seconds.
  - `numPoints` integer, required: Number of points contained in the ephemeris.
  - `type` string, required: The type/purpose of the ephemeris (e.g., CALIBRATION, LAUNCH, MNVR_PLAN, ROUTINE, SCREENING).
  - `pedigree` string: The pedigree of the ephemeris or source data used for ephemeris generation (e.g. DOPPLER, GPS, HYBRID, PROPAGATED, RANGING, SLR).
  - `category` string, required: The source category of the ephemeris (e.g. OWNER_OPERATOR, ANALYST, EXTERNAL).
  - `idStateVector` string: ID of the State Vector used to generate the ephemeris.
  - `hasMnvr` boolean: Boolean indicating whether maneuver(s) are incorporated into the ephemeris.
  - `idManeuvers` string[]: Array of the maneuver IDs of all maneuvers incorporated in the ephemeris.
  - `hasCov` boolean: Boolean indicating whether covariance data is provided with the ephemeris.
  - `hasAccel` boolean: Boolean indicating whether acceleration data is provided with the ephemeris.
  - `centBody` string: The Central Body of the ephemeris. Assumed to be Earth, unless otherwise indicated.
  - `integrator` string: Integrator used in ephemeris generation (e.g. RK7(8), RK8(9), COWELL, TWO-BODY).
  - `geopotentialModel` string: Geopotential model used in ephemeris generation (e.g. EGM-96, WGS-84, WGS-72, JGM-2, GEM-T3), including mm degree zonals, nn degree/order tesserals (e.g. EGM-96 24Z,24T).
  - `dragModel` string: Drag model used in ephemeris generation (e.g. JAC70, MSIS90, NONE, etc.).
  - `lunarSolar` boolean: Boolean indicating use of lunar/solar data in ephemeris generation.
  - `solidEarthTides` boolean: Boolean indicating use of solid earth tide data in ephemeris generation.
  - `bDot` number, double: First derivative of ballistic coefficient (m^2/kg-s).
  - `edr` number, double: Model parameter value for energy dissipation rate (EDR), expressed in w/kg.
  - `interpolation` string: The recommended interpolation method for the ephemeris data.
  - `interpolationDegree` integer: The recommended interpolation degree for the ephemeris data.
  - `filename` string: Filename of the raw file used to provide the ephemeris data including filetype extension, if applicable. This file may be retrieved using the 'getFile' operation as specified in the 'EphemerisSet' OpenAPI docs.
  - `comments` string: Additional source provided comments associated with the ephemeris.
  - `description` string: Notes/description of the provided ephemeris. A value of DSTOP signifies the ephemeris were generated using the last observation available.
  - `descriptor` string: Optional source-provided and searchable metadata or descriptor of the data.
  - `referenceFrame` 'J2000' | 'EFG/TDR' | 'ECR/ECEF' | 'TEME' | 'ITRF' | 'GCRF': The reference frame of the cartesian orbital states. If the referenceFrame is null it is assumed to be J2000.
  - `covReferenceFrame` 'J2000' | 'UVW' | 'EFG/TDR' | 'ECR/ECEF' | 'TEME' | 'GCRF': The reference frame of the covariance matrix elements. If the covReferenceFrame is null it is assumed to be J2000.
  - `createdAt` string, date-time: Time the row was created in the database, in UTC.
  - `createdBy` string: Application user who created the row in the database.
  - `source` string, required: Source of the data.
  - `origin` string: Originating system or organization which produced the data, if different from the source. The origin may be different than the source if the source was a mediating system which forwarded the data on behalf of the origin system. If null, the source may be assumed to be the origin.
  - `dataMode` 'REAL' | 'TEST' | 'SIMULATED' | 'EXERCISE', required: Indicator of whether the data is REAL, TEST, EXERCISE, or SIMULATED data: REAL: Data collected or produced that pertains to real-world objects, events, and analysis. TEST: Specific datasets used to evaluate compliance with specifications and requirements, and for validating technical, functional, and performance characteristics. EXERCISE: Data pertaining to a government or military exercise. The data may include both real and simulated data. SIMULATED: Synthetic data generated by a model to mimic real-world datasets.
  - `satNo` integer: Satellite/catalog number of the target on-orbit object.
  - `transactionId` string: Optional identifier to track a commercial or marketplace transaction executed to produce this data.
  - `origNetwork` string: The originating source network on which this record was created, auto-populated by the system.

## Other responses

- `400`: Bad Request
- `401`: Invalid/Missing User Credentials
- `403`: User Is Not Authorized
- `405`: Method Not Allowed
- `406`: MediaType Not Accepted by Request Headers
- `429`: Rate of Requests Exceeds Allowed Limit
- `500`: Internal Server Error

## Changes

> 12 revisions in range; 1 could not be searched.

- **2025-10-23** `09bd422d5ac1`: 1 warning
  - added the new `ECR/ECEF` enum value to the `items/covReferenceFrame` response property for the response status `200`
- **2025-05-29** `4e1cbc17e814`: 3 warning, 2 info
  - added the new `EFG/TDR` enum value to the `items/covReferenceFrame` response property for the response status `200`
  - added the new `GCRF` enum value to the `items/covReferenceFrame` response property for the response status `200`
  - added the new `TEME` enum value to the `items/covReferenceFrame` response property for the response status `200`
  - added the new optional `query` request parameter `firstResult`
  - …1 more
- **2025-04-16** `75f764c843a9`: 1 breaking, 2 info
  - the `items/stepSize` response's property format changed from `int32` to `int16` for status `200`
  - api operation id `findAllWithStream_10` removed and replaced with ``
  - the endpoint scheme security `BasicAuth` was removed from the API

[Operation history](https://skmtc.dev/bluestaq/apis/unified-data-library-services-api/changes/udl/ephemerisset/get.md)

---

[API](https://skmtc.dev/bluestaq/apis/unified-data-library-services-api.md) - [All operations](https://skmtc.dev/bluestaq/apis/unified-data-library-services-api/llms.txt) - [OpenAPI document](https://skmtc.dev/bluestaq/apis/unified-data-library-services-api/revisions/bd17bc53681e?raw)
