Satellite · NORAD 12520 · COSPAR 1981-056A
COSMOS 1277
- Operator Russian Ministry of Defence
- Constellation Kosmos (Russian military / government)
- Country Russia
Altitude now
—
object decayed
Velocity
—
Inclination
70.40°
Period
92.3 min
92.3 min
Perigee
358km
Apogee
416km
orbit unavailableNo orbital element set on file — decayed 02 Jul 1981.· Metadata updated 17 h ago
Live position
Live position
Live position unavailable — this object re-entered the atmosphere on 02 Jul 1981 and is no longer tracked.
Mission
Mission & classification
- Mission type derived
- Military
- Object type
- Payload
- SATCAT ops status
- Decayed [D]
- Radar cross-section
- 17.3 m²
- Constellation membership derived
- Kosmos (Russian military / government) via name_pattern
CelesTrak groups
Not listed in any CelesTrak group.
Aliases
- COSMOS 1277Celestrak Satcat
Ownership
Operator & country
- Operator
- Russian Ministry of Defence
- SATCAT owner code
- CIS · Commonwealth of Independent States (former USSR)
- Country
- Russia RU
Launch
Launch
- Launch date
- 17 Jun 1981
- COSPAR launch id
- 1981-056
- Launch site
- Baikonur Cosmodrome (Tyuratam)
Objects from the same launch · 9
- SL-4 DEB12522DebrisDecayed
- SL-4 DEB12523DebrisDecayed
- SL-4 DEB12524DebrisDecayed
- SL-4 DEB12525DebrisDecayed
- SL-4 DEB12526DebrisDecayed
- COSMOS 1277 DEB12573DebrisDecayed
- COSMOS 1277 DEB12574DebrisDecayed
- COSMOS 1277 DEB12575DebrisDecayed
- SL-4 R/B12521Rocket 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
- 12520
- COSPAR / international designator
- 1981-056A
- SatelliteIndex id
- sat_01M28X3JN1T2KP15BBVVKD052B
- Canonical slug
- cosmos-1277-12520
Orbit class, mission type and constellation membership are derived by SatelliteIndex (Military) — see the methodology. Positions are propagated estimates, not tracking measurements; never use them for conjunction assessment.