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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: 6 days ago

TLE from 6 days ago

0 LANDSAT 1 (ERTS 1)
1 06126U 72058A   26155.07687136  .00000286  00000-0  23513-3 0  9997
2 06126  99.3366 184.5989 0006912 294.8179  65.2264 13.97834600746121

Epoch: 2026-06-04T01:50Z

TLE epoch observation values (Epoch: 2026-06-04T01:50:41.685Z)

Latitude

-0.00002°

Longitude

-95.60111°

Altitude

902.061 km

Speed

7.402 km/s

True Right ascension

12h 18m 23s

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

07:39:36

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

903.552 km

Perigee altitude

893.493 km

Semi-major axis

7,276.659 km

Eccentricity

0.00069

Inclination

99.3366°

RAAN

184.5989°

Arg. of periapsis

294.8179°

True anomaly

65.29834°

Mean anomaly

65.2264°

Eccentric anomaly

65.26237°

Mean motion

3.49659 °/min

Orbital period

102.96 mins

BSTAR

0.00023513

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

DELTA 1 DEB, 7833 (Decayed)

DELTA 1 DEB, 7834 (Decayed)

DELTA 1 DEB, 7837 (Decayed)

DELTA 1 DEB, 7835 (Decayed)

DELTA 1 DEB, 7832 (Decayed)

DELTA 1 DEB, 42565

DELTA 1 DEB, 8537 (Decayed)

DELTA 1 DEB, 14874 (Decayed)

DELTA 1 DEB, 8499 (Decayed)

DELTA 1 DEB, 9676 (Decayed)

DELTA 1 DEB, 9669 (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.
7 mins	2026-06-10 00:35:02.580Z	105.49° ESE	2026-06-10 00:39:02.580Z	59.174° ENE	19.365°	2026-06-10 00:42:02.580Z	23.169° NE
9 mins	2026-06-10 02:16:02.580Z	183.774° SSW	2026-06-10 02:20:02.580Z	257.906° W	40.63°	2026-06-10 02:25:02.580Z	336.174° NNW
9 mins	2026-06-10 14:46:02.580Z	20.267° NNE	2026-06-10 14:50:02.580Z	77.01° E	43.601°	2026-06-10 14:55:02.580Z	187.447° SSW
5 mins	2026-06-10 16:29:02.580Z	327.285° NNW	2026-06-10 16:31:02.580Z	304.099° NW	16.059°	2026-06-10 16:34:02.580Z	269.475° W

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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: 6 days ago

TLE from 6 days ago

TLE epoch observation values (Epoch: 2026-06-04T01:50:41.685Z)

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: 6 days ago