Satellite · NORAD 20438 · COSPAR 1990-005C
UOSAT 4 (UO-15)
- Operator United Kingdom
- Constellation —
- Country United Kingdom
Altitude now
—
no element set
Velocity
—
Inclination
98.78°
Period
100.6 min
100.6 min
Perigee
778km
Apogee
794km
orbit unavailableNo orbital element set on file.· Metadata updated 10 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
- Unknown
- Object type
- Payload
- SATCAT ops status
- Non-operational [-]
- Radar cross-section
- 0.3 m²
CelesTrak groups
Not listed in any CelesTrak group.
Aliases
- UOSAT 4 (UO-15)Celestrak Satcat
Ownership
Operator & country
- Operator
- —
- SATCAT owner code
- UK · United Kingdom
- Country
- United Kingdom GB
Launch
Launch
- Launch date
- 22 Jan 1990
- COSPAR launch id
- 1990-005
- Launch site
- Guiana Space Centre, Kourou
Objects from the same launch · 7
- SPOT 220436PayloadUnknown
- UOSAT 3 (UO-14)20437PayloadUnknown
- PACSAT (AO-16)20439PayloadUnknown
- DOVE (DO-17)20440PayloadUnknown
- WEBERSAT (WO-18)20441PayloadUnknown
- LUSAT (LO-19)20442PayloadActive
- ARIANE 40 R/B20443Rocket 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
- 20438
- COSPAR / international designator
- 1990-005C
- SatelliteIndex id
- sat_01M28X3JPDAP3BK987B7WYXRKT
- Canonical slug
- uosat-4-uo-15-20438
Orbit class, mission type and constellation membership are derived by SatelliteIndex (Unknown) — see the methodology. Positions are propagated estimates, not tracking measurements; never use them for conjunction assessment.