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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 (53 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: 5 hours ago

TLE from 5 hours ago

0 LANDSAT 1 (ERTS 1)
1 06126U 72058A   26002.97307445 -.00000087  00000-0 -28858-4 0  9998
2 06126  99.3536  29.8057 0007692 350.4630   9.6385 13.97817471724875

Epoch: 2026-01-02T23:21Z

TLE epoch observation values (Epoch: 2026-01-02T23:21:13.632Z)

Latitude

-0.00001°

Longitude

-63.10671°

Altitude

898.704 km

Speed

7.406 km/s

True Right ascension

01h 59m 13s

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

04:06:39

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

904.18 km

Perigee altitude

892.985 km

Semi-major axis

7,276.72 km

Eccentricity

0.00077

Inclination

99.3536°

RAAN

29.8057°

Arg. of periapsis

350.463°

True anomaly

9.65327°

Mean anomaly

9.6385°

Eccentric anomaly

9.64588°

Mean motion

3.49655 °/min

Orbital period

102.96 mins

BSTAR

-0.000028858

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

DELTA 1 DEB, 8533

DELTA 1 DEB, 8313 (Decayed)

DELTA 1 DEB, 7935 (Decayed)

DELTA 1 DEB, 7850

DELTA 1 DEB, 8002 (Decayed)

DELTA 1 DEB, 8391 (Decayed)

DELTA 1 DEB, 8433 (Decayed)

DELTA 1 DEB, 8321 (Decayed)

DELTA 1 DEB, 42567

DELTA 1 R/B, 6127

DELTA 1 DEB, 7973 (Decayed)

DELTA 1 DEB, 9970 (Decayed)

DELTA 1 DEB, 7974 (Decayed)

DELTA 1 DEB, 8393 (Decayed)

DELTA 1 DEB, 8537 (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	2026-01-03 13:41:54.155Z	39.364° NE	2026-01-03 13:45:54.155Z	89.493° E	27.029°	2026-01-03 13:50:54.155Z	155.62° SSE
9 mins	2026-01-03 15:23:54.155Z	351.644° N	2026-01-03 15:27:54.155Z	293.474° NW	30.989°	2026-01-03 15:32:54.155Z	228.907° WSW
9 mins	2026-01-04 01:14:54.155Z	148.596° SSE	2026-01-04 01:18:54.155Z	88.049° E	41.588°	2026-01-04 01:23:54.155Z	354.008° N
5 mins	2026-01-04 02:58:54.155Z	239.484° WSW	2026-01-04 03:00:54.155Z	263.107° W	16.432°	2026-01-04 03:03:54.155Z	298.843° NW

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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: 5 hours ago

TLE from 5 hours ago

TLE epoch observation values (Epoch: 2026-01-02T23:21:13.632Z)

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: 5 hours ago