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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: 5 hours ago

TLE from 5 hours ago

0 LANDSAT 1 (ERTS 1)
1  6126U 72058A   26177.69545003 -.00000221  00000-0 -12369-3 0  9993
2  6126  99.3357 207.5980 0007532 224.6677 135.3879 13.97836203749283

Epoch: 2026-06-26T16:41Z

TLE epoch observation values (Epoch: 2026-06-26T16:41:26.882Z)

Latitude

-0.00003°

Longitude

42.41573°

Altitude

908.067 km

Speed

7.396 km/s

True Right ascension

13h 50m 23s

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

08:53:18

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

903.997 km

Perigee altitude

893.036 km

Semi-major axis

7,276.654 km

Eccentricity

0.00075

Inclination

99.3357°

RAAN

207.598°

Arg. of periapsis

224.6677°

True anomaly

135.44848°

Mean anomaly

135.3879°

Eccentric anomaly

135.41819°

Mean motion

3.4966 °/min

Orbital period

102.96 mins

BSTAR

-0.00012369

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

DELTA 1 DEB, 9727 (Decayed)

DELTA 1 DEB, 14874 (Decayed)

DELTA 1 DEB, 7894 (Decayed)

DELTA 1 DEB, 9670 (Decayed)

DELTA 1 DEB, 7957

DELTA 1 DEB, 8498 (Decayed)

DELTA 1 DEB, 7895 (Decayed)

DELTA 1 DEB, 7875 (Decayed)

DELTA 1 DEB, 7850

DELTA 1 DEB, 7890

DELTA 1 DEB, 7883 (Decayed)

DELTA 1 DEB, 7835 (Decayed)

DELTA 1 DEB, 8497 (Decayed)

DELTA 1 DEB, 8545 (Decayed)

DELTA 1 DEB, 8507 (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	2026-06-27 01:23:42.440Z	142.244° SSE	2026-06-27 01:28:42.440Z	77.388° E	37.282°	2026-06-27 01:33:42.440Z	358.897° N
7 mins	2026-06-27 03:07:42.440Z	225.819° WSW	2026-06-27 03:10:42.440Z	264.172° W	21.022°	2026-06-27 03:14:42.440Z	312.535° NW
7 mins	2026-06-27 13:55:42.440Z	51.898° ENE	2026-06-27 13:58:42.440Z	92.364° ESE	23.234°	2026-06-27 14:02:42.440Z	144.165° SSE
9 mins	2026-06-27 15:36:42.440Z	354.933° N	2026-06-27 15:40:42.440Z	290.319° WNW	34.786°	2026-06-27 15:45:42.440Z	222.502° SW

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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: 5 hours ago

TLE from 5 hours ago

TLE epoch observation values (Epoch: 2026-06-26T16:41:26.882Z)

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: 5 hours ago