Rocket body · NORAD 21587 · COSPAR 1991-051H
PEGASUS R/B
- Operator United States
- Constellation —
- Country United States
Altitude now
—
object decayed
Velocity
—
Inclination
81.99°
Period
88.4 min
88.4 min
Perigee
187km
Apogee
204km
orbit unavailableNo orbital element set on file — decayed 08 Nov 1991.· Metadata updated 11 h ago
Live position
Live position
Live position unavailable — this object re-entered the atmosphere on 08 Nov 1991 and is no longer tracked.
Mission
Mission & classification
- Mission type derived
- Rocket body
- Object type
- Rocket body
- SATCAT ops status
- Decayed [D]
- Radar cross-section
- 0.6 m²
CelesTrak groups
Not listed in any CelesTrak group.
Aliases
- PEGASUS R/BCelestrak Satcat
Ownership
Operator & country
- Operator
- —
- SATCAT owner code
- US · United States
- Country
- United States US
Launch
Launch
- Launch date
- 17 Jul 1991
- COSPAR launch id
- 1991-051
Objects from the same launch · 7
- MICROSAT 121580PayloadDecayed
- MICROSAT 221581PayloadDecayed
- MICROSAT 321582PayloadDecayed
- MICROSAT 421583PayloadDecayed
- MICROSAT 521584PayloadDecayed
- MICROSAT 621585PayloadDecayed
- MICROSAT 721586PayloadDecayed
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
- 21587
- COSPAR / international designator
- 1991-051H
- SatelliteIndex id
- sat_01M28X3JPKDVSSD2Y60ZHP1X1D
- Canonical slug
- pegasus-r-b-21587
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.