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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 (54 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: 10 hours ago

TLE from 10 hours ago

0 LANDSAT 1 (ERTS 1)
1 06126U 72058A   26121.07735705  .00000309  00000-0  25126-3 0  9994
2 06126  99.3403 150.0217 0008549  30.9925 329.1740 13.97832788741379

Epoch: 2026-05-01T01:51Z

TLE epoch observation values (Epoch: 2026-05-01T01:51:23.649Z)

Latitude

-0.00001°

Longitude

-96.84163°

Altitude

898.829 km

Speed

7.405 km/s

True Right ascension

10h 00m 05s

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

19:19:54

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

904.75 km

Perigee altitude

892.308 km

Semi-major axis

7,276.666 km

Eccentricity

0.00085

Inclination

99.3403°

RAAN

150.0217°

Arg. of periapsis

30.9925°

True anomaly

329.12375°

Mean anomaly

329.174°

Eccentric anomaly

329.14888°

Mean motion

3.49659 °/min

Orbital period

102.96 mins

BSTAR

0.00025126

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

DELTA 1 DEB, 7960 (Decayed)

DELTA 1 DEB, 8005 (Decayed)

DELTA 1 DEB, 7868 (Decayed)

DELTA 1 DEB, 8568 (Decayed)

DELTA 1 DEB, 7847 (Decayed)

DELTA 1 DEB, 14878 (Decayed)

DELTA 1 DEB, 8573 (Decayed)

DELTA 1 DEB, 8384 (Decayed)

LANDSAT 1 DEB, 51446 (Decayed)

DELTA 1 DEB, 8499 (Decayed)

DELTA 1 DEB, 8570 (Decayed)

DELTA 1 DEB, 7845 (Decayed)

DELTA 1 DEB, 7894 (Decayed)

DELTA 1 DEB, 7835 (Decayed)

DELTA 1 DEB, 8089 (Decayed)

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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	2026-05-01 14:27:42.055Z	23.245° NE	2026-05-01 14:32:42.055Z	86° E	39.954°	2026-05-01 14:37:42.055Z	177.81° S
6 mins	2026-05-01 16:11:42.055Z	330.91° NNW	2026-05-01 16:14:42.055Z	291.561° WNW	19.49°	2026-05-01 16:17:42.055Z	256.923° W
5 mins	2026-05-02 00:22:42.055Z	84.822° E	2026-05-02 00:24:42.055Z	60.623° ENE	16.45°	2026-05-02 00:27:42.055Z	26.216° NE
9 mins	2026-05-02 02:01:42.055Z	175.377° S	2026-05-02 02:05:42.055Z	248.849° W	43.385°	2026-05-02 02:10:42.055Z	340.001° 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: 10 hours ago

TLE from 10 hours ago

TLE epoch observation values (Epoch: 2026-05-01T01:51:23.649Z)

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: 10 hours ago