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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)

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Last TLE update: 1 week ago

TLE from 1 week 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

03:49:56

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, 7933

DELTA 1 DEB, 7843 (Decayed)

DELTA 1 DEB, 7871 (Decayed)

DELTA 1 DEB, 7845 (Decayed)

DELTA 1 R/B, 6127

DELTA 1 DEB, 8532 (Decayed)

DELTA 1 DEB, 8498 (Decayed)

DELTA 1 DEB, 9671 (Decayed)

DELTA 1 DEB, 8381 (Decayed)

DELTA 1 DEB, 8003 (Decayed)

DELTA 1 DEB, 8499 (Decayed)

DELTA 1 DEB, 9675 (Decayed)

DELTA 1 DEB, 7895 (Decayed)

DELTA 1 DEB, 7941 (Decayed)

DELTA 1 DEB, 7864 (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	2026-06-11 00:38:03.754Z	106.29° ESE	2026-06-11 00:42:03.754Z	58.328° ENE	20.227°	2026-06-11 00:45:03.754Z	21.969° NNE
9 mins	2026-06-11 02:19:03.754Z	186.384° SSW	2026-06-11 02:23:03.754Z	260.253° W	39.582°	2026-06-11 02:28:03.754Z	335.138° NNW
9 mins	2026-06-11 14:49:03.754Z	18.824° NNE	2026-06-11 14:53:03.754Z	74.645° E	44.19°	2026-06-11 14:58:03.754Z	189.735° SSW
5 mins	2026-06-11 16:32:03.754Z	326.23° NNW	2026-06-11 16:34:03.754Z	303.378° NW	15.311°	2026-06-11 16:37:03.754Z	269.836° 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: 1 week ago

TLE from 1 week 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: 1 week ago