Rocket body · NORAD 21151 · COSPAR 1991-018C
INMARSAT 2-F2 R/B(PAM-D)
- Operator United States
- Constellation —
- Country United States
Altitude now
—
no element set
Velocity
—
Inclination
23.19°
Period
3.1 h
188.0 min
Perigee
280km
Apogee
8,709km
orbit unavailableNo orbital element set on file.· Metadata updated 39 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
- Rocket body
- Object type
- Rocket body
- Radar cross-section
- 2.9 m²
CelesTrak groups
Not listed in any CelesTrak group.
Aliases
- INMARSAT 2-F2 R/B(PAM-D)Celestrak Satcat
Ownership
Operator & country
- Operator
- —
- SATCAT owner code
- US · United States
- Country
- United States US
Launch
Launch
- Launch date
- 08 Mar 1991
- COSPAR launch id
- 1991-018
Objects from the same launch · 2
- INMARSAT 2-F221149PayloadUnknown
- DELTA 2 R/B21150Rocket 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
CelesTrak SATCATcommunity
Satellite catalog data courtesy of CelesTrak.
last sync 15 h ago
Field provenance
| Field | Source | Observed | Confidence |
|---|---|---|---|
| Canonical Name | CelesTrak SATCAT | 12 Sept 2026 18:57 UTC | 100% |
| Decay Date | CelesTrak SATCAT | 12 Sept 2026 18:57 UTC | 100% |
| Launch Date | CelesTrak SATCAT | 12 Sept 2026 18:57 UTC | 100% |
| Object Type | CelesTrak SATCAT | 12 Sept 2026 18:57 UTC | 100% |
| Owner Code | CelesTrak SATCAT | 12 Sept 2026 18:57 UTC | 100% |
| Status | CelesTrak SATCAT | 12 Sept 2026 18:57 UTC | 100% |
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
- 21151
- COSPAR / international designator
- 1991-018C
- SatelliteIndex id
- sat_01M28X3JPHMZEEK2X1REP5E48Q
- Canonical slug
- inmarsat-2-f2-r-b-pam-d-21151
Orbit class, mission type and constellation membership are derived by SatelliteIndex (Rocket body) — see the methodology. Positions are propagated estimates, not tracking measurements; never use them for conjunction assessment.