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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, 1.9 m

Radar Cross Section

Large (>1 m²)

Expand to show TLE details & history
Last TLE update: 10 hours ago

TLE from 10 hours ago

0 LANDSAT 1 (ERTS 1)
1 06126U 72058A   26205.53922248 -.00000191  00000-0 -10241-3 0  9991
2 06126  99.3359 235.9059 0008356 148.5975 211.5687 13.97841919753174

Epoch: 2026-07-24T12:56Z

TLE epoch observation values (Epoch: 2026-07-24T12:56:28.822Z)

Latitude

-0.00006°

Longitude

99.52141°

Altitude

909.326 km

Speed

7.395 km/s

True Right ascension

15h 43m 37s

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

11:53:50

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

904.577 km

Perigee altitude

892.416 km

Semi-major axis

7,276.634 km

Eccentricity

0.00084

Inclination

99.3359°

RAAN

235.9059°

Arg. of periapsis

148.5975°

True anomaly

211.51862°

Mean anomaly

211.5687°

Eccentric anomaly

211.54365°

Mean motion

3.49661 °/min

Orbital period

102.96 mins

BSTAR

-0.00010241

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

DELTA 1 DEB, 8505 (Decayed)

DELTA 1 DEB, 15539 (Decayed)

DELTA 1 DEB, 7886 (Decayed)

DELTA 1 DEB, 8098 (Decayed)

DELTA 1 DEB, 8374 (Decayed)

DELTA 1 DEB, 8434 (Decayed)

DELTA 1 DEB, 7837 (Decayed)

DELTA 1 DEB, 8375 (Decayed)

DELTA 1 DEB, 8568 (Decayed)

DELTA 1 DEB, 7882 (Decayed)

DELTA 1 DEB, 8001 (Decayed)

DELTA 1 DEB, 8540 (Decayed)

DELTA 1 DEB, 8094 (Decayed)

DELTA 1 DEB, 14878 (Decayed)

DELTA 1 DEB, 7942 (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.
9 mins	2026-07-25 01:05:38.839Z	127.063° SE	2026-07-25 01:10:38.839Z	64.032° ENE	28.514°	2026-07-25 01:14:38.839Z	9.844° NNE
8 mins	2026-07-25 02:48:38.839Z	208.417° SW	2026-07-25 02:51:38.839Z	252.15° W	29.38°	2026-07-25 02:56:38.839Z	323.786° NNW
4 mins	2026-07-25 13:38:38.839Z	74.442° E	2026-07-25 13:39:38.839Z	86.439° E	15.35°	2026-07-25 13:42:38.839Z	121.267° SE
10 mins	2026-07-25 15:17:38.839Z	7.008° NNE	2026-07-25 15:22:38.839Z	258.63° W	42.093°	2026-07-25 15:27:38.839Z	206.631° 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: 10 hours ago

TLE from 10 hours ago

TLE epoch observation values (Epoch: 2026-07-24T12:56:28.822Z)

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: 10 hours ago