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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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<iframe src="https://www.satcat.com/sats-embedded/6126?theme=dark&initialShowStats=false" width="600" height="400" frameborder="0" title="Kayhan Space Satcat Satellite Viewer"></iframe>

Iframe URL

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   26317.84435748 -.00000265  00000-0 -15484-3 0  9999
2 06126  99.3221 349.9976 0007842 203.1822 156.8988 13.97846855768865

Epoch: 2026-11-13T20:15Z

TLE epoch observation values (Epoch: 2026-11-13T20:15:52.486Z)

Latitude

0.00005°

Longitude

-6.92877°

Altitude

909.377 km

Speed

7.395 km/s

True Right ascension

23h 19m 59s

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

23:54:16

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

904.185 km

Perigee altitude

892.773 km

Semi-major axis

7,276.616 km

Eccentricity

0.00078

Inclination

99.3221°

RAAN

349.9976°

Arg. of periapsis

203.1822°

True anomaly

156.93403°

Mean anomaly

156.8988°

Eccentric anomaly

156.91642°

Mean motion

3.49662 °/min

Orbital period

102.96 mins

BSTAR

-0.00015484

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

DELTA 1 DEB, 8002 (Decayed)

DELTA 1 DEB, 8001 (Decayed)

DELTA 1 DEB, 14476 (Decayed)

DELTA 1 DEB, 8535 (Decayed)

DELTA 1 DEB, 42571 (Decayed)

DELTA 1 DEB, 42560

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.
6 mins	2026-11-14 14:04:44.975Z	61.273° ENE	2026-11-14 14:06:44.975Z	87.159° E	21.329°	2026-11-14 14:10:44.975Z	136.887° SSE
9 mins	2026-11-14 15:44:44.975Z	0.415° NNE	2026-11-14 15:48:44.975Z	303.811° NW	50.989°	2026-11-14 15:53:44.975Z	218.22° SW
9 mins	2026-11-15 01:36:44.975Z	130.113° SE	2026-11-15 01:40:44.975Z	55.76° ENE	43.76°	2026-11-15 01:45:44.975Z	358.635° N

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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: 7 hours ago

TLE from 7 hours ago

TLE epoch observation values (Epoch: 2026-11-13T20:15:52.486Z)

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