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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, 2.3 m

Radar Cross Section

Large (>1 m²)

Expand to show TLE details & history
Last TLE update: 7 hours ago

TLE from 7 hours ago

0 LANDSAT 1 (ERTS 1)
1 06126U 72058A   26289.85759341 -.00000102  00000-0 -39244-4 0  9997
2 06126  99.3261 321.5864 0007094 284.0190  76.0184 13.97842060764957

Epoch: 2026-10-16T20:34Z

TLE epoch observation values (Epoch: 2026-10-16T20:34:56.070Z)

Latitude

0.00003°

Longitude

-12.51982°

Altitude

902.897 km

Speed

7.401 km/s

True Right ascension

21h 26m 20s

True Declination

0° 00' 00"

Sunlit

Object was in full shadow 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

22:33:27

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

903.658 km

Perigee altitude

893.334 km

Semi-major axis

7,276.633 km

Eccentricity

0.00071

Inclination

99.3261°

RAAN

321.5864°

Arg. of periapsis

284.019°

True anomaly

76.0973°

Mean anomaly

76.0184°

Eccentric anomaly

76.05785°

Mean motion

3.49661 °/min

Orbital period

102.96 mins

BSTAR

-0.000039244

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

DELTA 1 DEB, 9671 (Decayed)

DELTA 1 DEB, 7929 (Decayed)

DELTA 1 DEB, 8543 (Decayed)

DELTA 1 DEB, 8318 (Decayed)

DELTA 1 DEB, 7936 (Decayed)

DELTA 1 DEB, 8433 (Decayed)

DELTA 1 DEB, 7943 (Decayed)

DELTA 1 DEB, 7976 (Decayed)

DELTA 1 DEB, 7895 (Decayed)

DELTA 1 DEB, 7931 (Decayed)

DELTA 1 DEB, 14876 (Decayed)

DELTA 1 DEB, 8093 (Decayed)

DELTA 1 DEB, 8088 (Decayed)

DELTA 1 DEB, 7851 (Decayed)

DELTA 1 DEB, 7861 (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	2026-10-17 14:21:15.167Z	34.922° NE	2026-10-17 14:26:15.167Z	99.457° ESE	33.473°	2026-10-17 14:31:15.167Z	160.651° S
8 mins	2026-10-17 16:04:15.167Z	346.421° N	2026-10-17 16:07:15.167Z	304.102° NW	33.875°	2026-10-17 16:12:15.167Z	233.758° WSW
10 mins	2026-10-18 01:54:15.167Z	152.334° SSE	2026-10-18 01:59:15.167Z	51.404° ENE	66.853°	2026-10-18 02:04:15.167Z	351.587° N
5 mins	2026-10-18 03:39:15.167Z	246.794° WSW	2026-10-18 03:41:15.167Z	270.584° WNW	16.162°	2026-10-18 03:44:15.167Z	303.32° 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: 7 hours ago

TLE from 7 hours ago

TLE epoch observation values (Epoch: 2026-10-16T20:34:56.070Z)

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: 7 hours ago