Satellite · NORAD 8820 · COSPAR 1976-039A
LAGEOS 1
- Operator United States
- Constellation —
- Country United States
Altitude now
5,873.7km
SGP4 propagation
Velocity
5.71km/s
Inclination
109.82°
Period
3.8 h
225.5 min
Perigee
5,838km
Apogee
5,948km
orbit agingOrbit updated 9 h ago · element epoch 10 Sept 2026 19:22 UTC (28.1 h old)· Metadata updated 9 h ago
Live position
Ground track & current position
Propagated client-side every 5 s from the latest element set (SGP4). Accuracy degrades with element age.
Loading ground track…
- Latitude
- 9.899° S
- Longitude
- 130.540° W
- Altitude
- 5873.7 km
- Velocity
- 5.709 km/s
- past 45 min
- next 90 min
- first fix from server render · element epoch 10 Sept 2026 19:22 UTC
Mission
Mission & classification
Ownership
Operator & country
- Operator
- —
- SATCAT owner code
- US · United States
- Country
- United States US
Launch
Launch
- Launch date
- 04 May 1976
- COSPAR launch id
- 1976-039
Objects from the same launch · 3
- DELTA 1 DEB [YO]14514DebrisDecayed
- DELTA 1 R/B8821Rocket bodyDecayed
- LAGEOS 1 AKM8822Rocket bodyInactive
Change log
History
| Field | Change | Source | Date |
|---|---|---|---|
| Country Code | ∅ → US | Celestrak Satcat | 11 Sept 2026 18:53 UTC |
| Owner Code | ∅ → US | Celestrak Satcat | 11 Sept 2026 18:53 UTC |
| Orbit Class | ∅ → MEO | Celestrak | 11 Sept 2026 18:53 UTC |
Regulatory
UN registration
Transparency
Sources & provenance
CelesTrakcommunity
Orbital data courtesy of CelesTrak (Dr. T.S. Kelso).
last sync 4 h ago
CelesTrak SATCATcommunity
Satellite catalog data courtesy of CelesTrak.
last sync 8 h ago
Field provenance
| Field | Source | Observed | Confidence |
|---|---|---|---|
| Canonical Name | CelesTrak SATCAT | 11 Sept 2026 18:53 UTC | 100% |
| Decay Date | CelesTrak SATCAT | 11 Sept 2026 18:53 UTC | 100% |
| Launch Date | CelesTrak SATCAT | 11 Sept 2026 18:53 UTC | 100% |
| Object Type | CelesTrak SATCAT | 11 Sept 2026 18:53 UTC | 100% |
| Orbital Elements | CelesTrak | 11 Sept 2026 22:59 UTC | 100% |
| Owner Code | CelesTrak SATCAT | 11 Sept 2026 18:53 UTC | 100% |
| Status | CelesTrak SATCAT | 11 Sept 2026 18:53 UTC | 100% |
Quality flags
- UNKNOWN_OPERATORactive payload without resolved operator11 Sept 2026
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
- 8820
- COSPAR / international designator
- 1976-039A
- SatelliteIndex id
- sat_01M28X2SWS09G5GTPVRR2KEN1S
- Canonical slug
- lageos-1-8820
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.