Satellite · NORAD 20560 · COSPAR 1990-031A
USA 56
- Operator National Reconnaissance Office
- Constellation USA (classified US military payloads)
- Country United States
Altitude now
—
no element set
Velocity
—
Inclination
89.86°
Period
97.4 min
97.4 min
Perigee
595km
Apogee
678km
orbit unavailableNo orbital element set on file.· Metadata updated 13 h ago
Live position
Live position
Live position unavailable — no public orbital element set exists for this object (it may be classified, untracked or too small to catalogue).
Mission
Mission & classification
- Mission type derived
- Military
- Object type
- Payload
- Radar cross-section
- —
- Constellation membership derived
- USA (classified US military payloads) via name_pattern
CelesTrak groups
Not listed in any CelesTrak group.
Aliases
- USA 56Celestrak Satcat
Ownership
Operator & country
- Operator
- National Reconnaissance Office
- SATCAT owner code
- US · United States
- Country
- United States US
Launch
Launch
- Launch date
- 11 Apr 1990
- COSPAR launch id
- 1990-031
Objects from the same launch · 8
- ATLAS 28E DEB20564DebrisInactive
- ATLAS 28E DEB20565DebrisInactive
- ATLAS 28E DEB20575DebrisInactive
- ATLAS 28E DEB20576DebrisInactive
- USA 56-58 DEB24636DebrisDecayed
- USA 5720561PayloadUnknown
- USA 5820562PayloadUnknown
- ATLAS 28E R/B20563Rocket bodyInactive
Change log
History
No changes recorded since first ingestion on 11 Sept 2026 18:54 UTC. Status, orbit class, name and ownership changes are logged here as sources are re-ingested.
Regulatory
UN registration
Transparency
Sources & provenance
No source is linked to this record yet — the catalogue row exists but no provenance entry has been written for it.
Field provenance
No field-level provenance recorded.
Timeline
Events
No events detected for this object yet. Launches, decays and orbit changes are generated by the derived-analytics connector.
Reference
Identifiers
- NORAD catalogue number
- 20560
- COSPAR / international designator
- 1990-031A
- SatelliteIndex id
- sat_01M28X3JPDAP3BK987B7WYXRQK
- Canonical slug
- usa-56-20560
Orbit class, mission type and constellation membership are derived by SatelliteIndex (Military) — see the methodology. Positions are propagated estimates, not tracking measurements; never use them for conjunction assessment.