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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: 1 day ago

TLE from 1 day ago

0 LAGEOS 1
1 08820U 76039A   26123.13571654  .00000006  00000-0  00000-0 0  9995
2 08820 109.8055 163.9207 0044675 311.9216  54.0105  6.38664781910267

Epoch: 2026-05-03T03:15Z

TLE epoch observation values (Epoch: 2026-05-03T03:15:25.909Z)

Latitude

5.92202°

Longitude

-108.11929°

Altitude

5,861.819 km

Speed

5.715 km/s

True Right ascension

10h 47m 07s

True Declination

5° 54' 05"

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

14:20:05

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

5,946.696 km

Perigee altitude

5,837.064 km

Semi-major axis

12,270.017 km

Eccentricity

0.00447

Inclination

109.8055°

RAAN

163.9207°

Arg. of periapsis

311.9216°

True anomaly

54.42608°

Mean anomaly

54.0105°

Eccentric anomaly

54.21815°

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 R/B, 8821 (Decayed)

DELTA 1 DEB (YO), 14514 (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.
56 mins	2026-05-04 14:03:54.759Z	29.407° NE	2026-05-04 14:32:54.759Z	109.38° ESE	38.277°	2026-05-04 14:59:54.759Z	181.455° SSW
52 mins	2026-05-04 17:38:54.759Z	27.409° NE	2026-05-04 18:03:54.759Z	320.956° NNW	39.995°	2026-05-04 18:30:54.759Z	249.548° W
43 mins	2026-05-04 21:04:54.759Z	56.188° ENE	2026-05-04 21:25:54.759Z	4.372° NNE	29.591°	2026-05-04 21:47:54.759Z	311.414° NW
54 mins	2026-05-05 00:22:54.759Z	122.505° SE	2026-05-05 00:48:54.759Z	49.368° ENE	42.711°	2026-05-05 01:16:54.759Z	333.1° NNW
50 mins	2026-05-05 03:58:54.759Z	194.85° SSW	2026-05-05 04:22:54.759Z	258.32° W	32.206°	2026-05-05 04:48:54.759Z	326.131° 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: 2026-05-03T03:15:25.909Z)

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