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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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<iframe src="https://www.satcat.com/sats-embedded/6126?theme=dark&initialShowStats=false" width="600" height="400" frameborder="0" title="Kayhan Space Satcat Satellite Viewer"></iframe>

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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: 8 hours ago

TLE from 8 hours ago

0 LANDSAT 1 (ERTS 1)
1  6126U 72058A   26062.09691367 -.00000156  00000-0 -77169-4 0  9992
2  6126  99.3496  90.0036 0007934 179.0712 181.0466 13.97829760733130

Epoch: 2026-03-03T02:19Z

TLE epoch observation values (Epoch: 2026-03-03T02:19:33.341Z)

Latitude

-0.00002°

Longitude

-105.76619°

Altitude

909.959 km

Speed

7.394 km/s

True Right ascension

06h 00m 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

13:36:42

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

904.313 km

Perigee altitude

892.766 km

Semi-major axis

7,276.677 km

Eccentricity

0.00079

Inclination

99.3496°

RAAN

90.0036°

Arg. of periapsis

179.0712°

True anomaly

181.04494°

Mean anomaly

181.0466°

Eccentric anomaly

181.04577°

Mean motion

3.49658 °/min

Orbital period

102.96 mins

BSTAR

-0.000077169

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

DELTA 1 DEB, 8576 (Decayed)

DELTA 1 DEB, 8001 (Decayed)

DELTA 1 DEB, 7940

DELTA 1 DEB, 7850

DELTA 1 DEB, 8575 (Decayed)

DELTA 1 DEB, 42564

DELTA 1 DEB, 8379 (Decayed)

DELTA 1 DEB, 7859 (Decayed)

DELTA 1 DEB, 8532 (Decayed)

DELTA 1 DEB, 8536 (Decayed)

DELTA 1 DEB, 8508 (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.
5 mins	2026-03-03 13:16:25.505Z	66.401° ENE	2026-03-03 13:18:25.505Z	88.958° E	14.431°	2026-03-03 13:21:25.505Z	122.069° SE
10 mins	2026-03-03 14:56:25.505Z	8.252° NNE	2026-03-03 15:00:25.505Z	316.318° NNW	43.153°	2026-03-03 15:06:25.505Z	204.185° SW
9 mins	2026-03-04 00:47:25.505Z	125.504° SE	2026-03-04 00:52:25.505Z	58.944° ENE	28.257°	2026-03-04 00:56:25.505Z	8.444° NNE
8 mins	2026-03-04 02:30:25.505Z	210.292° SW	2026-03-04 02:33:25.505Z	257.492° W	29.843°	2026-03-04 02:38:25.505Z	325.31° 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 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: 2026-03-03T02:19:33.341Z)

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