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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

CONE + 2 PAN, 2.3 m

Radar Cross Section

Large (>1 m²)

Expand to show TLE details & history
Last TLE update: 1 day ago

TLE from 1 day ago

0 LANDSAT 1 (ERTS 1)
1 06126U 72058A   26261.01189563  .00000216  00000-0  18548-3 0  9995
2 06126  99.3309 292.2866 0008073  10.5929 349.5402 13.97841171760922

Epoch: 2026-09-18T00:17Z

TLE epoch observation values (Epoch: 2026-09-18T00:17:07.782Z)

Latitude

-0.00001°

Longitude

-68.93672°

Altitude

898.364 km

Speed

7.406 km/s

True Right ascension

19h 29m 08s

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

19:49:15

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

904.374 km

Perigee altitude

892.625 km

Semi-major axis

7,276.636 km

Eccentricity

0.00081

Inclination

99.3309°

RAAN

292.2866°

Arg. of periapsis

10.5929°

True anomaly

349.52339°

Mean anomaly

349.5402°

Eccentric anomaly

349.5318°

Mean motion

3.49661 °/min

Orbital period

102.96 mins

BSTAR

0.00018548

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

DELTA 1 DEB, 7908 (Decayed)

DELTA 1 DEB, 8126 (Decayed)

DELTA 1 DEB, 7932 (Decayed)

DELTA 1 DEB, 7907

DELTA 1 DEB, 7957

DELTA 1 DEB, 7958

DELTA 1 DEB, 8575 (Decayed)

DELTA 1 DEB, 7930 (Decayed)

DELTA 1 DEB, 7976 (Decayed)

DELTA 1 DEB, 8579 (Decayed)

DELTA 1 DEB, 8387 (Decayed)

DELTA 1 DEB, 8501 (Decayed)

DELTA 1 DEB, 7847 (Decayed)

DELTA 1 DEB, 9727 (Decayed)

DELTA 1 DEB, 8408 (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	2026-09-19 14:39:35.275Z	25.208° NE	2026-09-19 14:44:35.275Z	87.313° E	51.186°	2026-09-19 14:49:35.275Z	173.589° S
7 mins	2026-09-19 16:23:35.275Z	332.675° NNW	2026-09-19 16:26:35.275Z	291.66° WNW	23.078°	2026-09-19 16:30:35.275Z	247.404° WSW
5 mins	2026-09-20 00:34:35.275Z	83.12° E	2026-09-20 00:36:35.275Z	60.249° ENE	15.538°	2026-09-20 00:39:35.275Z	27.238° NE
9 mins	2026-09-20 02:13:35.275Z	170.412° S	2026-09-20 02:17:35.275Z	246.606° WSW	79.353°	2026-09-20 02:22:35.275Z	342.593° 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: 1 day ago

TLE from 1 day ago

TLE epoch observation values (Epoch: 2026-09-18T00:17:07.782Z)

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: 1 day ago