Showing default

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.

Loading next visibility...

Iframe embed code

<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

Optional Secondary NORAD IDs

Max 10 NORAD IDs; Separated by commas

Initial load time (optional)

ISO8601 Format

TLE date request (optional)

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: 13 hours ago

TLE from 13 hours ago

0 LAGEOS 1
1  8820U 76039A   25325.59179595  .00000007  00000-0  00000+0 0  9996
2  8820 109.8379 108.2467 0044673 346.7166  14.1523  6.38664915899888

Epoch: 2025-11-21T14:12Z

TLE epoch observation values (Epoch: 2025-11-21T14:12:11.170Z)

Latitude

0.89238°

Longitude

-165.94859°

Altitude

5,841.156 km

Speed

5.724 km/s

True Right ascension

07h 11m 43s

True Declination

0° 53' 21"

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

23:52:40

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

5,946.694 km

Perigee altitude

5,837.066 km

Semi-major axis

12,270.017 km

Eccentricity

0.00447

Inclination

109.8379°

RAAN

108.2467°

Arg. of periapsis

346.7166°

True anomaly

14.27814°

Mean anomaly

14.1523°

Eccentric anomaly

14.21515°

Mean motion

1.59689 °/min

Orbital period

225.44 mins

BSTAR

Loading maneuver chart data...

Computing Atmospheric mass density...

Loading historical data...

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

LAGEOS 1 AKM, 8822

DELTA 1 DEB (YO), 14514 (Decayed)

DELTA 1 R/B, 8821 (Decayed)

Did you know?

You can import UDL-sourced sensor .json files into the Sandbox to generate a visibility chart that accounts for multi-vendor sensor geometry.

Click here to try in Sandbox

LAGEOS 1 Visibility forecast

Loading observer location...
Set Observer location

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.
12 mins	2025-11-22 02:47:45.100Z	299.971° NW	2025-11-22 02:47:45.100Z	299.971° NW	26.443°	2025-11-22 02:59:45.100Z	279.581° WNW
47 mins	2025-11-22 05:33:45.100Z	83.445° E	2025-11-22 05:56:45.100Z	23.33° NE	33.813°	2025-11-22 06:20:45.100Z	325.233° NNW
56 mins	2025-11-22 08:56:45.100Z	153.348° SSE	2025-11-22 09:23:45.100Z	233.042° WSW	44.586°	2025-11-22 09:52:45.100Z	333.316° NNW
21 mins	2025-11-22 12:53:45.100Z	251.06° W	2025-11-22 13:03:45.100Z	274.223° WNW	12.828°	2025-11-22 13:14:45.100Z	299.416° NW
55 mins	2025-11-22 21:18:45.100Z	30.227° NE	2025-11-22 21:45:45.100Z	107.222° ESE	40.04°	2025-11-22 22:13:45.100Z	186.238° SSW
52 mins	2025-11-23 00:51:45.100Z	28.556° NE	2025-11-23 01:16:45.100Z	323.775° NNW	38.848°	2025-11-23 01:43:45.100Z	253.96° W

Co-orbital & Co-planar RSOs

Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions

Please sign-in to view Co-orbital & Co-planar RSOs.

Click to sort rows by RSO header in ascending order	Click to sort rows by Country header in ascending order	Click to sort rows by Type header in ascending order	Click to sort rows by Inclination Δ header in ascending order	Click to sort rows by RAAN Δ header in ascending order	Click to sort rows by Coplanar Angle header in ascending order	Click to sort rows by SMA Δ header in ascending order	Click to sort rows by Orbital period header in ascending order	Click to sort rows by <5km Md TCA header in ascending order

CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings

Authenticating...

Click to sort rows by Secondary header in ascending order	Click to sort rows by Secondary name header in ascending order	Click to sort rows by Country header in ascending order	Click to sort rows by Owner header in ascending order	Click to sort rows by Obj. Type header in ascending order	Click to sort rows by Miss dist. header in ascending order	Click to sort rows by Rel. speed header in ascending order	Click to sort rows by Apr. angle header in ascending order	Click to sort rows by TCA header in ascending order

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: 13 hours ago

TLE from 13 hours ago

TLE epoch observation values (Epoch: 2025-11-21T14:12:11.170Z)

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: 13 hours ago