US Space Command website screenshot

US Space Command

US Space Command (USSPACECOM) is a unified combatant command in the United States Department of Defense responsible for conducting operations in, from, and through space to deter conflict and, if necessary, defeat aggressors. The command provides space situational awareness (SSA) data through Space-Track.org, including the official satellite catalog with orbital element sets, conjunction warnings, and reentry predictions for all tracked objects.

1 APIs 0 Features
Federal GovernmentSpaceSpace Situational AwarenessSatellite TrackingOpen Data

APIs

Space-Track.org REST API

Space-Track.org is the official public source for US Space Command's satellite catalog and space situational awareness data, maintained by the 18th Space Defense Squadron. The R...

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Rate Limits

Us Space Comman Rate Limits

5 limits

RATE LIMITS

FinOps

Semantic Vocabularies

Us Space Comman Context

3 classes · 20 properties

JSON-LD

API Governance Rules

US Space Command API Rules

6 rules · 2 errors 2 warnings 2 info

SPECTRAL

JSON Structure

Us Space Command Gp Structure

0 properties

JSON STRUCTURE

Example Payloads

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opencollection: 1.0.0
info:
  name: Space-Track.org REST API
  version: '1.0'
request:
  auth:
    type: apikey
    key: chocolatechip
    value: '{{chocolatechip}}'
    placement: query
items:
- info:
    name: Authentication
    type: folder
  items:
  - info:
      name: Authenticate with Space-Track.org
      type: http
    http:
      method: POST
      url: https://www.space-track.org/ajaxauth/login
      body:
        type: form-urlencoded
        data:
        - name: identity
          value: ''
        - name: password
          value: ''
    docs: Authenticate using username and password credentials. On success, a session cookie is returned for use in subsequent
      API requests.
- info:
    name: General Perturbations
    type: folder
  items:
  - info:
      name: List Current General Perturbation Orbital Elements
      type: http
    http:
      method: GET
      url: https://www.space-track.org/basicspacedata/query/class/gp/format/:format
      params:
      - name: format
        value: ''
        type: path
        description: Response format
      - name: NORAD_CAT_ID
        value: ''
        type: query
        description: NORAD catalog number (e.g., 25544 for ISS)
      - name: OBJECT_NAME
        value: ''
        type: query
        description: Object name (supports wildcard ~~)
      - name: EPOCH
        value: ''
        type: query
        description: Epoch filter (e.g., >now-30 for last 30 days)
      - name: DECAY_DATE
        value: ''
        type: query
        description: Filter for active (null-val) or decayed objects
      - name: INCLINATION
        value: ''
        type: query
        description: Orbital inclination filter
      - name: PERIOD
        value: ''
        type: query
        description: Orbital period filter (minutes)
      - name: APOGEE
        value: ''
        type: query
        description: Apogee altitude filter (km)
      - name: PERIGEE
        value: ''
        type: query
        description: Perigee altitude filter (km)
      - name: COUNTRY_CODE
        value: ''
        type: query
        description: ISO country code of object owner
      - name: orderby
        value: ''
        type: query
        description: Sort field and direction (e.g., NORAD_CAT_ID asc)
      - name: limit
        value: ''
        type: query
        description: Max number of results
    docs: Returns the latest orbital element sets (GP/TLEs) for tracked objects. The GP class provides the newest element
      set per object.
- info:
    name: Satellite Catalog
    type: folder
  items:
  - info:
      name: Query Satellite Catalog (SATCAT)
      type: http
    http:
      method: GET
      url: https://www.space-track.org/basicspacedata/query/class/satcat/format/:format
      params:
      - name: format
        value: ''
        type: path
      - name: NORAD_CAT_ID
        value: ''
        type: query
        description: NORAD catalog number
      - name: INTLDES
        value: ''
        type: query
        description: International designator (e.g., 1998-067A for ISS)
      - name: OBJECT_NAME
        value: ''
        type: query
        description: Object name (supports wildcard ~~)
      - name: OBJECT_TYPE
        value: ''
        type: query
        description: Type filter (PAYLOAD, ROCKET BODY, DEBRIS, UNKNOWN)
      - name: COUNTRY_CODE
        value: ''
        type: query
        description: Country code filter
      - name: LAUNCH_DATE
        value: ''
        type: query
        description: Launch date filter
      - name: DECAY_DATE
        value: ''
        type: query
        description: Decay date (use null-val for active objects)
      - name: orderby
        value: ''
        type: query
      - name: limit
        value: ''
        type: query
    docs: Returns satellite catalog information including object metadata, launch dates, countries of origin, and object classification.
  - info:
      name: Get Space Object Counts by Country (Boxscore)
      type: http
    http:
      method: GET
      url: https://www.space-track.org/basicspacedata/query/class/boxscore/format/:format
      params:
      - name: format
        value: ''
        type: path
    docs: Returns a count of tracked space objects by country and object type.
- info:
    name: Conjunction Data
    type: folder
  items:
  - info:
      name: List Conjunction Data Messages (CDM)
      type: http
    http:
      method: GET
      url: https://www.space-track.org/basicspacedata/query/class/cdm_public/format/:format
      params:
      - name: format
        value: ''
        type: path
      - name: SAT_1_ID
        value: ''
        type: query
        description: NORAD ID of primary object
      - name: SAT_2_ID
        value: ''
        type: query
        description: NORAD ID of secondary object
      - name: TCA_RANGE_START
        value: ''
        type: query
        description: Time of closest approach start filter (ISO 8601)
      - name: TCA_RANGE_END
        value: ''
        type: query
        description: Time of closest approach end filter (ISO 8601)
      - name: PC
        value: ''
        type: query
        description: Probability of collision filter (e.g., >0.0001)
      - name: MISS_DISTANCE
        value: ''
        type: query
        description: Miss distance filter (km)
      - name: orderby
        value: ''
        type: query
      - name: limit
        value: ''
        type: query
    docs: Returns publicly available Conjunction Data Messages (CDMs), which are notifications of potential close approaches
      between tracked objects. Sorted by collision probability descending.
- info:
    name: Decay and Reentry
    type: folder
  items:
  - info:
      name: List Satellite Decay Data
      type: http
    http:
      method: GET
      url: https://www.space-track.org/basicspacedata/query/class/decay/format/:format
      params:
      - name: format
        value: ''
        type: path
      - name: NORAD_CAT_ID
        value: ''
        type: query
      - name: DECAY_EPOCH
        value: ''
        type: query
        description: Decay date filter
      - name: orderby
        value: ''
        type: query
      - name: limit
        value: ''
        type: query
    docs: Returns decay information for space objects that have reentered the atmosphere.
  - info:
      name: List Tracking and Impact Predictions (TIP)
      type: http
    http:
      method: GET
      url: https://www.space-track.org/basicspacedata/query/class/tip/format/:format
      params:
      - name: format
        value: ''
        type: path
      - name: NORAD_CAT_ID
        value: ''
        type: query
      - name: CCSDS_OD_SPAN
        value: ''
        type: query
      - name: orderby
        value: ''
        type: query
      - name: limit
        value: ''
        type: query
    docs: Returns Tracking and Impact Prediction (TIP) messages for objects expected to reenter the atmosphere.
- info:
    name: Space Object History
    type: folder
  items:
  - info:
      name: List Historical General Perturbation Elements
      type: http
    http:
      method: GET
      url: https://www.space-track.org/basicspacedata/query/class/gp_history/format/:format
      params:
      - name: format
        value: ''
        type: path
      - name: NORAD_CAT_ID
        value: ''
        type: query
        description: NORAD catalog number (required to prevent full table scans)
      - name: EPOCH
        value: ''
        type: query
        description: Epoch date range filter
      - name: orderby
        value: ''
        type: query
      - name: limit
        value: ''
        type: query
    docs: Returns historical orbital element sets. Contains 138+ million records. Use with caution — apply filters to avoid
      large downloads.
bundled: true