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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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<iframe src="https://www.satcat.com/sats-embedded/8820?theme=dark&initialShowStats=false" width="600" height="400" frameborder="0" title="Kayhan Space Satcat Satellite Viewer"></iframe>

Iframe URL

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

Unknown

Radar Cross Section

Medium (>0.1 m² and <1 m²)

Expand to show TLE details & history
Last TLE update: 12 hours ago

TLE from 12 hours ago

0 LAGEOS 1
1 08820U 76039A   26177.30649924  .00000015  00000-0  00000-0 0  9999
2 08820 109.8030 182.4560 0044670 300.3126  43.0459  6.38664727913718

Epoch: 2026-06-26T07:21Z

TLE epoch observation values (Epoch: 2026-06-26T07:21:21.534Z)

Latitude

-15.41561°

Longitude

163.35603°

Altitude

5,857.842 km

Speed

5.717 km/s

True Right ascension

12h 32m 31s

True Declination

-15° 21' 52"

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

06:33:44

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

5,946.691 km

Perigee altitude

5,837.07 km

Semi-major axis

12,270.017 km

Eccentricity

0.00447

Inclination

109.803°

RAAN

182.456°

Arg. of periapsis

300.3126°

True anomaly

43.39673°

Mean anomaly

43.0459°

Eccentric anomaly

43.22117°

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)

DELTA 1 DEB (YO), 14514 (Decayed)

DELTA 1 R/B, 8821 (Decayed)

LAGEOS 1 AKM, 8822

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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.
46 mins	2026-06-26 19:15:31.271Z	66.307° ENE	2026-06-26 19:38:31.271Z	10.822° NNE	30.364°	2026-06-26 20:01:31.271Z	316.225° NNW
56 mins	2026-06-26 22:35:31.271Z	132.637° SE	2026-06-26 23:02:31.271Z	58.989° ENE	44.228°	2026-06-26 23:31:31.271Z	333.715° NNW
46 mins	2026-06-27 02:16:31.271Z	207.856° SW	2026-06-27 02:38:31.271Z	263.457° W	26.568°	2026-06-27 03:02:31.271Z	322.652° NNW
49 mins	2026-06-27 10:58:31.271Z	36.377° NE	2026-06-27 11:23:31.271Z	101.149° ESE	30.594°	2026-06-27 11:47:31.271Z	162.238° S
55 mins	2026-06-27 14:30:31.271Z	26.338° NE	2026-06-27 14:57:31.271Z	310.301° NW	43.29°	2026-06-27 15:25:31.271Z	233.749° WSW
44 mins	2026-06-27 17:59:31.271Z	45.804° ENE	2026-06-27 18:21:31.271Z	351.66° N	29.776°	2026-06-27 18:43:31.271Z	299.453° NW

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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: 12 hours ago

TLE from 12 hours ago

TLE epoch observation values (Epoch: 2026-06-26T07:21:21.534Z)

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: 12 hours ago