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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: 19 hours ago

TLE from 19 hours ago

0 LAGEOS 1
1 08820U 76039A   26269.62615116  .00000000  00000-0  00000-0 0  9996
2 08820 109.8202 214.0527 0044609 280.5392 263.6880  6.38664860919611

Epoch: 2026-09-26T15:01Z

TLE epoch observation values (Epoch: 2026-09-26T15:01:39.460Z)

Latitude

-3.58293°

Longitude

161.92256°

Altitude

5,901.236 km

Speed

5.696 km/s

True Right ascension

02h 11m 04s

True Declination

-3° 34' 14"

Sunlit

Object was in full shadow 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

03:36:08

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

5,946.615 km

Perigee altitude

5,837.144 km

Semi-major axis

12,270.017 km

Eccentricity

0.00446

Inclination

109.8202°

RAAN

214.0527°

Arg. of periapsis

280.5392°

True anomaly

263.18024°

Mean anomaly

263.688°

Eccentric anomaly

263.43409°

Mean motion

1.59689 °/min

Orbital period

225.44 mins

BSTAR

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Computing Atmospheric mass density...

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

DELTA 1 DEB (YO), 14514 (Decayed)

LAGEOS 1 AKM, 8822

DELTA 1 R/B, 8821 (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.
50 mins	2026-09-27 12:25:44.241Z	32.977° NE	2026-09-27 12:50:44.241Z	331.306° NNW	44.386°	2026-09-27 13:15:44.241Z	269.766° W
46 mins	2026-09-27 15:48:44.241Z	74.183° E	2026-09-27 16:10:44.241Z	19.507° NNE	38.554°	2026-09-27 16:34:44.241Z	321.558° NNW
56 mins	2026-09-27 19:09:44.241Z	143.277° SSE	2026-09-27 19:36:44.241Z	95.786° ESE	87.798°	2026-09-27 20:05:44.241Z	333.786° NNW
38 mins	2026-09-27 22:56:44.241Z	225.803° WSW	2026-09-27 23:14:44.241Z	269.128° W	21.015°	2026-09-27 23:34:44.241Z	315.921° NNW
54 mins	2026-09-28 07:31:44.241Z	31.874° NE	2026-09-28 07:58:44.241Z	104.821° ESE	46.803°	2026-09-28 08:25:44.241Z	176.205° S

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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: 19 hours ago

TLE from 19 hours ago

TLE epoch observation values (Epoch: 2026-09-26T15:01:39.460Z)

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: 19 hours ago