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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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https://www.satcat.com/sats-embedded/8820?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

8820, 1976-039A

Orbit

Active

Country

Related business

National Aeronautics and Space Administration (NASA) (US)

Manufacturer

Bendix

Mission

Operational spacecraft

Bus & Motor

LAGEOS, Unknown motor

Mass

411 kg wet, 411 kg dry

Launch date (UTC)

1976-05-04 (50 years ago)

Launch vehicle

DELTA 2913

Launch site

Air Force Western Test Range (AFWTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

SPHERE, 0.3 m

Radar Cross Section

Medium (>0.1 m² and <1 m²)

Expand to show TLE details & history
Last TLE update: 1 day ago

TLE from 1 day ago

0 LAGEOS 1
1 08820U 76039A   26223.89906097 -.00000001  00000-0  00000-0 0  9998
2 08820 109.8091 198.3988 0044646 290.3170 248.3119  6.38664727916698

Epoch: 2026-08-11T21:34Z

TLE epoch observation values (Epoch: 2026-08-11T21:34:38.867Z)

Latitude

1.67185°

Longitude

94.98131°

Altitude

5,914.713 km

Speed

5.69 km/s

True Right ascension

01h 16m 00s

True Declination

1° 39' 58"

Sunlit

Object was in daylight at epoch

Visualization orbit readout

Latitude

Unknown

Longitude

Unknown

Altitude

Unknown

Speed

Unknown

Apparent Right ascension

Unknown

Apparent Declination

Unknown

Sunlit

N/A

Visualization observer readout

Local Sidereal Time

21:43:54

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

5,946.661 km

Perigee altitude

5,837.1 km

Semi-major axis

12,270.018 km

Eccentricity

0.00446

Inclination

109.8091°

RAAN

198.3988°

Arg. of periapsis

290.317°

True anomaly

247.8375°

Mean anomaly

248.3119°

Eccentric anomaly

248.0746°

Mean motion

1.59689 °/min

Orbital period

225.44 mins

BSTAR

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Other satellites on launch #39 in the year 1976 (1976-05-04 UTC)

LAGEOS 1 AKM, 8822

DELTA 1 R/B, 8821 (Decayed)

DELTA 1 DEB (YO), 14514 (Decayed)

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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.

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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.
57 mins	2026-08-13 10:18:24.112Z	27.664° NE	2026-08-13 10:47:24.112Z	110.329° ESE	41.975°	2026-08-13 11:15:24.112Z	192.473° SSW
50 mins	2026-08-13 13:53:24.112Z	29.073° NE	2026-08-13 14:17:24.112Z	326.692° NNW	37.306°	2026-08-13 14:43:24.112Z	260.413° W
45 mins	2026-08-13 17:16:24.112Z	66.029° ENE	2026-08-13 17:38:24.112Z	12.082° NNE	30.514°	2026-08-13 18:01:24.112Z	317.086° NNW
55 mins	2026-08-13 20:36:24.112Z	133.554° SE	2026-08-13 21:03:24.112Z	48.246° ENE	44.367°	2026-08-13 21:31:24.112Z	333.763° NNW
45 mins	2026-08-14 00:17:24.112Z	209.924° SW	2026-08-14 00:38:24.112Z	262.594° W	25.891°	2026-08-14 01:02:24.112Z	321.778° NNW

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Co-orbital & Co-planar RSOs

Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions

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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings

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Check out LAGEOS 1, 8820 on other resources

View LAGEOS 1, 8820 on NASA - NSSDCA Website

View LAGEOS 1, 8820 on Heavens-Above

View LAGEOS 1, 8820 on Keep Track

View LAGEOS 1, 8820 on Celestrak

View LAGEOS 1, 8820 on Gunter's Space Page

Satcat and Kayhan Space are not affiliated with NASA, Celestrak, Heavens-Above, Keep Track, or Gunter's Space Page.

LAGEOS 1, 8820

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 1 day ago

TLE from 1 day ago

TLE epoch observation values (Epoch: 2026-08-11T21:34:38.867Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #39 in the year 1976 (1976-05-04 UTC)

LAGEOS 1 Visibility forecast

Co-orbital & Co-planar RSOs

Check out LAGEOS 1, 8820 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 1 day ago