Rocket body · NORAD 18121 · COSPAR 1987-051J
SL-8 R/B
- Operator Commonwealth of Independent States (former USSR)
- Constellation —
- Country Russia
Altitude now
—
no element set
Velocity
—
Inclination
74.01°
Period
117.8 min
117.8 min
Perigee
1,476km
Apogee
1,686km
orbit unavailableNo orbital element set on file.· Metadata updated 12 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
- 6.0 m²
CelesTrak groups
Not listed in any CelesTrak group.
Aliases
- SL-8 R/BCelestrak Satcat
Ownership
Operator & country
- Operator
- —
- SATCAT owner code
- CIS · Commonwealth of Independent States (former USSR)
- Country
- Russia RU
Launch
Launch
- Launch date
- 16 Jun 1987
- COSPAR launch id
- 1987-051
- Launch site
- Plesetsk Cosmodrome
Objects from the same launch · 8
- COSMOS 185218113PayloadUnknown
- COSMOS 185318114PayloadUnknown
- COSMOS 185418115PayloadUnknown
- COSMOS 185518116PayloadUnknown
- COSMOS 185618117PayloadUnknown
- COSMOS 185718118PayloadUnknown
- COSMOS 185818119PayloadUnknown
- COSMOS 185918120PayloadUnknown
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
- 18121
- COSPAR / international designator
- 1987-051J
- SatelliteIndex id
- sat_01M28X3JP03NEA9Z89CEHQF0N6
- Canonical slug
- sl-8-r-b-18121
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.