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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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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: 20 hours ago

TLE from 20 hours ago

0 LAGEOS 1
1 08820U 76039A   26033.41610676 -.00000006  00000-0  00000-0 0  9995
2 08820 109.8258 133.2001 0044659 331.1344  51.3389  6.38664903904535

Epoch: 2026-02-02T09:59Z

TLE epoch observation values (Epoch: 2026-02-02T09:59:11.624Z)

Latitude

21.45869°

Longitude

-157.33256°

Altitude

5,860.248 km

Speed

5.716 km/s

True Right ascension

08h 20m 18s

True Declination

21° 23' 26"

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

07:57:19

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

5,946.676 km

Perigee altitude

5,837.083 km

Semi-major axis

12,270.017 km

Eccentricity

0.00447

Inclination

109.8258°

RAAN

133.2001°

Arg. of periapsis

331.1344°

True anomaly

51.7399°

Mean anomaly

51.3389°

Eccentric anomaly

51.53926°

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)

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.
48 mins	2026-02-03 08:14:03.589Z	201.976° SSW	2026-02-03 08:37:03.589Z	260.154° W	28.504°	2026-02-03 09:02:03.589Z	323.681° NNW
48 mins	2026-02-03 16:58:03.589Z	37.638° NE	2026-02-03 17:22:03.589Z	98.301° ESE	28.629°	2026-02-03 17:46:03.589Z	158.351° S
55 mins	2026-02-03 20:30:03.589Z	26.234° NE	2026-02-03 20:57:03.589Z	307.623° NW	43.828°	2026-02-03 21:25:03.589Z	230.46° WSW
43 mins	2026-02-04 00:00:03.589Z	42.99° NE	2026-02-04 00:21:03.589Z	350.731° N	30.055°	2026-02-04 00:43:03.589Z	297.342° NW
50 mins	2026-02-04 03:18:03.589Z	102.444° ESE	2026-02-04 03:42:03.589Z	37.769° NE	38.355°	2026-02-04 04:08:03.589Z	330.598° 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: 20 hours ago

TLE from 20 hours ago

TLE epoch observation values (Epoch: 2026-02-02T09:59:11.624Z)

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: 20 hours ago