Satellite · NORAD 21244 · COSPAR 1991-031B
IBSS
- Operator United States
- Constellation —
- Country United States
Altitude now
—
object decayed
Velocity
—
Inclination
56.99°
Period
89.5 min
89.5 min
Perigee
242km
Apogee
257km
orbit unavailableNo orbital element set on file — decayed 06 May 1991.· Metadata updated 10 h ago
Live position
Live position
Live position unavailable — this object re-entered the atmosphere on 06 May 1991 and is no longer tracked.
Mission
Mission & classification
- Mission type derived
- Unknown
- Object type
- Payload
- SATCAT ops status
- Decayed [D]
- Radar cross-section
- 32.8 m²
CelesTrak groups
Not listed in any CelesTrak group.
Aliases
- IBSSCelestrak Satcat
Ownership
Operator & country
- Operator
- —
- SATCAT owner code
- US · United States
- Country
- United States US
Launch
Launch
- Launch date
- 28 Apr 1991
- COSPAR launch id
- 1991-031
Objects from the same launch · 5
- STS 39 DEB (CRO-C)21245DebrisDecayed
- STS 39 DEB (CRO-B)21246DebrisDecayed
- STS 39 DEB (CRO-A)21247DebrisDecayed
- STS 3921242PayloadDecayed
- USA 7021262PayloadUnknown
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
- 21244
- COSPAR / international designator
- 1991-031B
- SatelliteIndex id
- sat_01M28X3JPHMZEEK2X1REP5E4BM
- Canonical slug
- ibss-21244
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.