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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 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: 15 hours ago

TLE from 15 hours ago

0 LAGEOS 1
1  8820U 76039A   25338.58825681  .00000000  00000-0  00000+0 0  9996
2  8820 109.8365 112.7001 0044660 343.9299  15.5404  6.38664866900701

Epoch: 2025-12-04T14:07Z

TLE epoch observation values (Epoch: 2025-12-04T14:07:05.388Z)

Latitude

-0.41656°

Longitude

-172.55947°

Altitude

5,841.684 km

Speed

5.724 km/s

True Right ascension

07h 31m 25s

True Declination

0° 24' 54"

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

02:56:55

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

5,946.679 km

Perigee altitude

5,837.083 km

Semi-major axis

12,270.018 km

Eccentricity

0.00447

Inclination

109.8365°

RAAN

112.7001°

Arg. of periapsis

343.9299°

True anomaly

15.67825°

Mean anomaly

15.5404°

Eccentric anomaly

15.60925°

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.
50 mins	2025-12-05 05:24:23.265Z	93.909° ESE	2025-12-05 05:49:23.265Z	29.793° NE	35.879°	2025-12-05 06:14:23.265Z	327.979° NNW
56 mins	2025-12-05 08:51:23.265Z	162.425° S	2025-12-05 09:18:23.265Z	245.189° WSW	43.252°	2025-12-05 09:47:23.265Z	332.828° NNW
57 mins	2025-12-05 21:12:23.265Z	28.237° NE	2025-12-05 21:40:23.265Z	111.281° ESE	42.642°	2025-12-05 22:09:23.265Z	195.679° SSW
49 mins	2025-12-06 00:46:23.265Z	29.62° NE	2025-12-06 01:10:23.265Z	326.414° NNW	36.651°	2025-12-06 01:35:23.265Z	263.371° W
44 mins	2025-12-06 04:09:23.265Z	67.839° E	2025-12-06 04:31:23.265Z	12.348° NNE	30.794°	2025-12-06 04:53:23.265Z	319.16° 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: 15 hours ago

TLE from 15 hours ago

TLE epoch observation values (Epoch: 2025-12-04T14:07:05.388Z)

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: 15 hours ago