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LANDSAT 1 (ERTS 1), 6126

Orbit data source: Space-Track

LANDSAT 1 (ERTS 1), 6126 is a payload satellite owned by GSFC (US) in SSO that was launched on Sun, 23 Jul 1972 UTC via a DELTA 0900 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/6126?theme=dark&initialShowStats=false

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Identifier

6126, 1972-058A

Orbit

SSO

Country

Related business

National Aeronautics and Space Administration (NASA) (US)

Manufacturer

GE/MSVD

Mission

Non-operational spacecraft

Bus & Motor

NIMBUS, Unknown motor

Mass

891 kg wet, 891 kg dry

Launch date (UTC)

1972-07-23 (53 years ago)

Launch vehicle

DELTA 0900

Launch site

Air Force Western Test Range (AFWTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Unknown

Radar Cross Section

Large (>1 m²)

Expand to show TLE details & history
Last TLE update: 8 hours ago

TLE from 8 hours ago

0 LANDSAT 1 (ERTS 1)
1 06126U 72058A   25340.91633406  .00000298  00000-0  24358-3 0  9997
2 06126  99.3559   2.2510 0008913  62.6560 297.5508 13.97814644721095

Epoch: 2025-12-06T21:59Z

TLE epoch observation values (Epoch: 2025-12-06T21:59:31.262Z)

Latitude

-0.00008°

Longitude

-43.56645°

Altitude

901.238 km

Speed

7.403 km/s

True Right ascension

00h 09m 00s

True Declination

0° 00' 00"

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

04:25:43

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

905.078 km

Perigee altitude

892.107 km

Semi-major axis

7,276.73 km

Eccentricity

0.00089

Inclination

99.3559°

RAAN

2.251°

Arg. of periapsis

62.656°

True anomaly

297.4602°

Mean anomaly

297.5508°

Eccentric anomaly

297.5055°

Mean motion

3.49654 °/min

Orbital period

102.96 mins

BSTAR

0.00024358

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Other satellites on launch #58 in the year 1972 (1972-07-23 UTC)

DELTA 1 DEB, 8392 (Decayed)

DELTA 1 DEB, 13933 (Decayed)

DELTA 1 DEB, 8126 (Decayed)

DELTA 1 DEB, 8002 (Decayed)

DELTA 1 DEB, 7973 (Decayed)

DELTA 1 DEB, 8125 (Decayed)

DELTA 1 DEB, 8500 (Decayed)

DELTA 1 DEB, 7882 (Decayed)

DELTA 1 DEB, 8319

DELTA 1 DEB, 8539

DELTA 1 DEB, 8508 (Decayed)

DELTA 1 DEB, 9971 (Decayed)

DELTA 1 DEB, 8087 (Decayed)

DELTA 1 DEB, 7893

DELTA 1 DEB, 7838

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LANDSAT 1 (ERTS 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.
10 mins	2025-12-07 14:02:04.769Z	25.927° NE	2025-12-07 14:07:04.769Z	89.627° E	37.309°	2025-12-07 14:12:04.769Z	172.773° S
6 mins	2025-12-07 15:46:04.769Z	332.759° NNW	2025-12-07 15:49:04.769Z	290.848° WNW	21.685°	2025-12-07 15:52:04.769Z	253.843° W
4 mins	2025-12-07 23:58:04.769Z	72.489° E	2025-12-07 23:59:04.769Z	60.673° ENE	14.581°	2025-12-08 00:02:04.769Z	27.692° NE
9 mins	2025-12-08 01:36:04.769Z	169.371° S	2025-12-08 01:40:04.769Z	237.714° WSW	44.61°	2025-12-08 01:45:04.769Z	342.985° N

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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 LANDSAT 1 (ERTS 1), 6126 on other resources

View LANDSAT 1 (ERTS 1), 6126 on NASA - NSSDCA Website

View LANDSAT 1 (ERTS 1), 6126 on Heavens-Above

View LANDSAT 1 (ERTS 1), 6126 on Keep Track

View LANDSAT 1 (ERTS 1), 6126 on Celestrak

View LANDSAT 1 (ERTS 1), 6126 on Gunter's Space Page

Satcat and Kayhan Space are not affiliated with NASA, Celestrak, Heavens-Above, Keep Track, or Gunter's Space Page.

LANDSAT 1 (ERTS 1), 6126

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 8 hours ago

TLE from 8 hours ago

TLE epoch observation values (Epoch: 2025-12-06T21:59:31.262Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #58 in the year 1972 (1972-07-23 UTC)

LANDSAT 1 (ERTS 1) Visibility forecast

Co-orbital & Co-planar RSOs

Check out LANDSAT 1 (ERTS 1), 6126 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 8 hours ago