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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: 9 hours ago

TLE from 9 hours ago

0 LANDSAT 1 (ERTS 1)
1 06126U 72058A   26275.82841076 -.00000181  00000-0 -95281-4 0  9996
2 06126  99.3293 307.3387 0007595 327.2778  32.7913 13.97846407762992

Epoch: 2026-10-02T19:52Z

TLE epoch observation values (Epoch: 2026-10-02T19:52:54.689Z)

Latitude

-0.00003°

Longitude

-2.43393°

Altitude

899.479 km

Speed

7.405 km/s

True Right ascension

20h 29m 21s

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

22:45:55

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

904.007 km

Perigee altitude

892.954 km

Semi-major axis

7,276.618 km

Eccentricity

0.00076

Inclination

99.3293°

RAAN

307.3387°

Arg. of periapsis

327.2778°

True anomaly

32.83847°

Mean anomaly

32.7913°

Eccentric anomaly

32.81488°

Mean motion

3.49662 °/min

Orbital period

102.96 mins

BSTAR

-0.000095281

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

DELTA 1 DEB, 7961 (Decayed)

DELTA 1 DEB, 7944 (Decayed)

DELTA 1 DEB, 7945 (Decayed)

DELTA 1 DEB, 7976 (Decayed)

DELTA 1 DEB, 7977 (Decayed)

DELTA 1 DEB, 7891 (Decayed)

DELTA 1 DEB, 7875 (Decayed)

DELTA 1 DEB, 7883 (Decayed)

DELTA 1 DEB, 8002 (Decayed)

DELTA 1 DEB, 7868 (Decayed)

DELTA 1 DEB, 7872 (Decayed)

DELTA 1 DEB, 7869 (Decayed)

DELTA 1 DEB, 7929 (Decayed)

DELTA 1 DEB, 7928 (Decayed)

DELTA 1 DEB, 8095 (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.
5 mins	2026-10-03 13:41:43.107Z	62.975° ENE	2026-10-03 13:44:43.107Z	96.354° ESE	14.796°	2026-10-03 13:46:43.107Z	118.139° SE
10 mins	2026-10-03 15:21:43.107Z	9.182° NNE	2026-10-03 15:26:43.107Z	262.788° W	72.001°	2026-10-03 15:31:43.107Z	203.991° SW
8 mins	2026-10-04 01:13:43.107Z	120.48° SE	2026-10-04 01:17:43.107Z	65.088° ENE	31.987°	2026-10-04 01:21:43.107Z	10.813° NNE
8 mins	2026-10-04 02:55:43.107Z	206.881° SW	2026-10-04 02:59:43.107Z	273.297° WNW	35.349°	2026-10-04 03:03:43.107Z	324.171° NNW

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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: 9 hours ago

TLE from 9 hours ago

TLE epoch observation values (Epoch: 2026-10-02T19:52:54.689Z)

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: 9 hours ago