---
title: "GET /udl/onorbitlist"
method: GET
path: "/udl/onorbitlist"
tags: ["Onorbit"]
---

# GET /udl/onorbitlist

`GET /udl/onorbitlist`

## Request

- Base URL: `https://unifieddatalibrary.com`
- URL: `https://unifieddatalibrary.com/udl/onorbitlist`
- 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

- `firstResult` integer
- `maxResults` integer

## Response `200`

OK

- OnorbitListAbridged[]
  - `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.
  - `name` string, required: Unique name of the list.
  - `description` string: Description of the list.
  - `listPriority` number, double: Numerical priority of this orbit list relative to other orbit lists; lower values indicate higher priority. Decimal values allowed for fine granularity. Consumers should contact the provider for details on the priority.
  - `defaultRevisitRateMins` number, double: Default revisit rate in minutes for all objects in this list.
  - `namespace` string: Defined naming system that ensures each satellite or space object has a unique and unambiguous identifier within the name space (e.g. JCO, 18SDS). If null, it is assumed to be 18th Space Defense Squadron (18SDS).
  - `tags` string[]: Optional array of provider/source specific tags for this data, where each element is no longer than 32 characters, used for implementing data owner conditional access controls to restrict access to the data. Should be left null by data providers unless conditional access controls are coordinated with the UDL team.
  - `transactionId` string: Optional identifier to track a commercial or marketplace transaction executed to produce this data.
  - `createdAt` string, date-time: Time the row was created in the database, auto-populated by the system.
  - `createdBy` string: Application user who created the row in the database, auto-populated by the system.
  - `updatedAt` string, date-time: Time the row was last updated in the database, auto-populated by the system.
  - `updatedBy` string: Application user who updated the row in the database, auto-populated by the system.
  - `sourceDL` string: The source data library from which this record was received. This could be a remote or tactical UDL or another data library. If null, the record should be assumed to have originated from the primary Enterprise UDL.
  - `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.

## 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 breaking, 1 warning, 8 info
  - the `items/description` response property's maxLength was increased from `512` to `1024` for the response status `200`
  - removed the optional property `items/onorbits` from the response with the `200` status
  - added the optional property `items/defaultRevisitRateMins` to the response with the `200` status
  - added the optional property `items/listPriority` to the response with the `200` status
  - …6 more
- **2025-05-29** `4e1cbc17e814`: 2 info
  - added the new optional `query` request parameter `firstResult`
  - added the new optional `query` request parameter `maxResults`
- **2025-04-16** `75f764c843a9`: 2 info
  - api operation id `findAll_77` 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/onorbitlist/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)