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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>

Iframe URL

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: 14 hours ago

TLE from 14 hours ago

0 LANDSAT 1 (ERTS 1)
1 06126U 72058A   26163.30831891  .00000110  00000-0  11029-3 0  9996
2 06126  99.3369 192.9690 0006931 270.1352  89.9016 13.97839315747270

Epoch: 2026-06-12T07:23Z

TLE epoch observation values (Epoch: 2026-06-12T07:23:58.753Z)

Latitude

-0.00004°

Longitude

-178.66542°

Altitude

904.145 km

Speed

7.4 km/s

True Right ascension

12h 51m 52s

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

07:21:25

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

903.549 km

Perigee altitude

893.462 km

Semi-major axis

7,276.643 km

Eccentricity

0.00069

Inclination

99.3369°

RAAN

192.969°

Arg. of periapsis

270.1352°

True anomaly

89.98102°

Mean anomaly

89.9016°

Eccentric anomaly

89.94131°

Mean motion

3.49661 °/min

Orbital period

102.96 mins

BSTAR

0.00011029

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

DELTA 1 DEB, 8502 (Decayed)

DELTA 1 DEB, 7931 (Decayed)

DELTA 1 DEB, 7861 (Decayed)

DELTA 1 DEB, 7853 (Decayed)

DELTA 1 DEB, 7873 (Decayed)

DELTA 1 DEB, 8581 (Decayed)

DELTA 1 DEB, 8086 (Decayed)

DELTA 1 DEB, 7887 (Decayed)

DELTA 1 DEB, 7976 (Decayed)

DELTA 1 DEB, 7833 (Decayed)

DELTA 1 DEB, 8318 (Decayed)

DELTA 1 DEB, 14874 (Decayed)

DELTA 1 DEB, 8002 (Decayed)

DELTA 1 DEB, 8574 (Decayed)

DELTA 1 DEB, 7840 (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.
7 mins	2026-06-13 00:44:07.191Z	107.829° ESE	2026-06-13 00:48:07.191Z	56.1° ENE	21.956°	2026-06-13 00:51:07.191Z	19.327° NNE
9 mins	2026-06-13 02:25:07.191Z	191.669° SSW	2026-06-13 02:29:07.191Z	264.428° W	37.293°	2026-06-13 02:34:07.191Z	333.257° NNW
9 mins	2026-06-13 14:55:07.191Z	15.805° NNE	2026-06-13 14:59:07.191Z	60.827° ENE	44.901°	2026-06-13 15:04:07.191Z	194.203° SSW

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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: 14 hours ago

TLE from 14 hours ago

TLE epoch observation values (Epoch: 2026-06-12T07:23:58.753Z)

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: 14 hours ago