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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: 20 hours ago

TLE from 20 hours ago

0 LANDSAT 1 (ERTS 1)
1 06126U 72058A   26106.69014665 -.00000224  00000-0 -12525-3 0  9997
2 06126  99.3424 135.3863 0008600  66.5088 293.6977 13.97830497739366

Epoch: 2026-04-16T16:33Z

TLE epoch observation values (Epoch: 2026-04-16T16:33:48.670Z)

Latitude

-0.00004°

Longitude

42.09944°

Altitude

901.669 km

Speed

7.403 km/s

True Right ascension

09h 01m 32s

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

18:53:03

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

904.795 km

Perigee altitude

892.279 km

Semi-major axis

7,276.674 km

Eccentricity

0.00086

Inclination

99.3424°

RAAN

135.3863°

Arg. of periapsis

66.5088°

True anomaly

293.60742°

Mean anomaly

293.6977°

Eccentric anomaly

293.65256°

Mean motion

3.49658 °/min

Orbital period

102.96 mins

BSTAR

-0.00012525

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

DELTA 1 DEB, 7909 (Decayed)

DELTA 1 DEB, 7884 (Decayed)

DELTA 1 DEB, 8082 (Decayed)

DELTA 1 DEB, 7886 (Decayed)

DELTA 1 DEB, 8386 (Decayed)

DELTA 1 DEB, 8123 (Decayed)

DELTA 1 DEB, 9672 (Decayed)

DELTA 1 DEB, 8581 (Decayed)

DELTA 1 DEB, 14874 (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.
8 mins	2026-04-17 13:46:58.353Z	43.295° NE	2026-04-17 13:50:58.353Z	92.464° ESE	23.659°	2026-04-17 13:54:58.353Z	144.84° SSE
9 mins	2026-04-17 15:28:58.353Z	354.408° N	2026-04-17 15:32:58.353Z	290.126° WNW	34.304°	2026-04-17 15:37:58.353Z	223.191° SW
9 mins	2026-04-18 01:19:58.353Z	141.69° SSE	2026-04-18 01:23:58.353Z	79.489° E	38.721°	2026-04-18 01:28:58.353Z	357.317° N
6 mins	2026-04-18 03:03:58.353Z	237.542° WSW	2026-04-18 03:05:58.353Z	263.876° W	19.317°	2026-04-18 03:09:58.353Z	311.086° NW

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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: 20 hours ago

TLE from 20 hours ago

TLE epoch observation values (Epoch: 2026-04-16T16:33:48.670Z)

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: 20 hours ago