Satellite · NORAD 3990 · COSPAR 1969-053A
EXPLORER 41 (IMP-5)
- Operator United States
- Constellation —
- Country United States
Altitude now
—
object decayed
Velocity
—
Inclination
84.55°
Period
3.4 d
4,840.8 min
Perigee
3,926km
Apogee
172,901km
orbit unavailableNo orbital element set on file — decayed 23 Dec 1972.· Metadata updated 17 h ago
Live position
Live position
Live position unavailable — this object re-entered the atmosphere on 23 Dec 1972 and is no longer tracked.
Mission
Mission & classification
- Mission type derived
- Unknown
- Object type
- Payload
- SATCAT ops status
- Decayed [D]
- Radar cross-section
- —
CelesTrak groups
Not listed in any CelesTrak group.
Aliases
- EXPLORER 41 (IMP-5)Celestrak Satcat
Ownership
Operator & country
- Operator
- —
- SATCAT owner code
- US · United States
- Country
- United States US
Launch
Launch
- Launch date
- 21 Jun 1969
- COSPAR launch id
- 1969-053
Objects from the same launch · 1
- DELTA 1 R/B3993Rocket bodyDecayed
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
- 3990
- COSPAR / international designator
- 1969-053A
- SatelliteIndex id
- sat_01M28X3JJZC5AVGT77N5EC1ZN5
- Canonical slug
- explorer-41-imp-5-3990
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.