LAGEOS 1, 8820
Orbit data source: Space-Track
LAGEOS 1, 8820 is a payload satellite owned by NASA MSFC (US) that was launched on Tue, 04 May 1976 UTC via a DELTA 2913 launch vehicle from the Air Force Western Test Range (AFWTR). Payload-class satellites include a variety of spacecraft equipped with specific instruments for various scientific and technological missions. These include communications satellites like Starlink; space stations such as the ISS; scientific satellites like the Hubble; Earth observation satellites from companies like Planet Labs, Umbra, and HawkEye 360; GPS; miniature CubeSats for education and research; and military/defense satellites.
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8820 intel report (Beta)
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Edit Public Description
Identifier
Orbit
Country
USRelated business
Manufacturer
Bendix
Mission
Operational Civil Geodetic
Bus & Motor
LAGEOS, Unknown motor
Mass
411 kg wet, 411 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Sphere, 0.3 m
Radar Cross Section
0.283 m², Medium (>0.1 m² and < 1m²)
Expand to show TLE details & historyLast TLE update: 1 day ago
TLE from 1 day ago
0 LAGEOS 1
1 08820U 76039A 25260.75745840 .00000038 00000-0 00000-0 0 9999
2 08820 109.8448 86.0355 0044661 0.5868 347.4305 6.38664849895731Epoch: 2025-09-17T18:10Z
TLE epoch observation values (Epoch: 2025-09-17T18:10:44.405Z)
Latitude
-11.46937°
Longitude
-179.39862°
Altitude
5,843.195 km
Speed
5.724 km/s
True Right ascension
06h 00m 51s
True Declination
-11° 25' 49"
Sunlit
Visualization orbit readout
Latitude
Unknown
Longitude
Unknown
Altitude
Unknown
Speed
Unknown
Apparent Right ascension
Unknown
Apparent Declination
Unknown
Sunlit
Visualization observer readout
Local Sidereal Time
18:41:50
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
5,946.68 km
Perigee altitude
5,837.082 km
Semi-major axis
12,270.018 km
Eccentricity
0.00447
Inclination
109.8448°
RAAN
86.0355°
Arg. of periapsis
0.5868°
True anomaly
347.31852°
Mean anomaly
347.4305°
Eccentric anomaly
347.37457°
Mean motion
1.59689 °/min
Orbital period
225.44 mins
BSTAR
0
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Other satellites on launch #39 in the year 1976 (1976-05-04 UTC)
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You can import UDL-sourced sensor .json files into the Sandbox to generate a visibility chart that accounts for multi-vendor sensor geometry.LAGEOS 1 Visibility forecast
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Span | Click to sort rows by Start time (UTC) header in descending order | Start Az. | Max El. time (UTC) | Max El. Az. | Max El. | End time (UTC) | End Az. |
|---|---|---|---|---|---|---|---|
| 28 mins | 2025-09-19 01:49:23.671Z | 143.924° SSE | 2025-09-19 01:49:23.671Z | 143.924° SSE | 44.847° | 2025-09-19 02:17:23.671Z | 210.597° SW |
| 46 mins | 2025-09-19 04:53:23.671Z | 34.153° NE | 2025-09-19 05:15:23.671Z | 339.025° N | 33.09° | 2025-09-19 05:39:23.671Z | 278.763° WNW |
| 47 mins | 2025-09-19 08:13:23.671Z | 82.766° E | 2025-09-19 08:36:23.671Z | 24.072° NE | 33.488° | 2025-09-19 09:00:23.671Z | 325.005° NNW |
| 56 mins | 2025-09-19 11:36:23.671Z | 151.86° SSE | 2025-09-19 12:04:23.671Z | 250.153° W | 44.715° | 2025-09-19 12:32:23.671Z | 333.337° NNW |
| 24 mins | 2025-09-19 15:31:23.671Z | 245.61° WSW | 2025-09-19 15:43:23.671Z | 273.582° WNW | 13.768° | 2025-09-19 15:55:23.671Z | 301.326° NW |
| 55 mins | 2025-09-19 23:58:23.671Z | 30.319° NE | 2025-09-20 00:25:23.671Z | 106.436° ESE | 39.516° | 2025-09-20 00:53:23.671Z | 184.784° SSW |
Co-orbital & Co-planar RSOs
Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions
Click to sort rows by RSO header in ascending order | Click to sort rows by Country header in ascending order | Click to sort rows by Type header in ascending order | Click to sort rows by Inclination Δ header in ascending order | Click to sort rows by RAAN Δ header in ascending order | Click to sort rows by Coplanar Angle header in ascending order | Click to sort rows by SMA Δ header in ascending order | Click to sort rows by Orbital period header in ascending order | Click to sort rows by <5km Md TCA header in ascending order |
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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