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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, 1.9 m

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   26233.52611831  .00000150  00000-0  13828-3 0  9991
2 06126  99.3346 264.3549 0009102  78.1802 282.0381 13.97843639757086

Epoch: 2026-08-21T12:37Z

TLE epoch observation values (Epoch: 2026-08-21T12:37:36.621Z)

Latitude

-0.00002°

Longitude

105.1027°

Altitude

902.759 km

Speed

7.401 km/s

True Right ascension

17h 37m 25s

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

13:57:14

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

905.114 km

Perigee altitude

891.868 km

Semi-major axis

7,276.628 km

Eccentricity

0.00091

Inclination

99.3346°

RAAN

264.3549°

Arg. of periapsis

78.1802°

True anomaly

281.93607°

Mean anomaly

282.0381°

Eccentric anomaly

281.98709°

Mean motion

3.49662 °/min

Orbital period

102.96 mins

BSTAR

0.00013828

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

DELTA 1 DEB, 7874 (Decayed)

DELTA 1 DEB, 8434 (Decayed)

DELTA 1 DEB, 7894 (Decayed)

DELTA 1 DEB, 7978 (Decayed)

DELTA 1 DEB, 7889 (Decayed)

DELTA 1 DEB, 7863 (Decayed)

DELTA 1 DEB, 8498 (Decayed)

DELTA 1 DEB, 7872 (Decayed)

DELTA 1 DEB, 7933

DELTA 1 DEB, 8497 (Decayed)

DELTA 1 DEB, 8315 (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	2026-08-22 00:48:37.352Z	105.592° ESE	2026-08-22 00:52:37.352Z	55.655° ENE	20.384°	2026-08-22 00:55:37.352Z	20.021° NNE
9 mins	2026-08-22 02:29:37.352Z	188.399° SSW	2026-08-22 02:33:37.352Z	267.084° W	38.847°	2026-08-22 02:38:37.352Z	335.131° NNW
9 mins	2026-08-22 14:59:37.352Z	18.405° NNE	2026-08-22 15:03:37.352Z	106.392° ESE	44.569°	2026-08-22 15:08:37.352Z	191.05° SSW
5 mins	2026-08-22 16:42:37.352Z	323.485° NNW	2026-08-22 16:44:37.352Z	300.347° NW	14.813°	2026-08-22 16:47:37.352Z	267.991° W

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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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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: 2026-08-21T12:37:36.621Z)

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