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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: 13 hours ago

TLE from 13 hours ago

0 LANDSAT 1 (ERTS 1)
1 06126U 72058A   26076.91363844 -.00000010  00000-0  25465-4 0  9994
2 06126  99.3467 105.0853 0008757 139.8560 220.3251 13.97825932735207

Epoch: 2026-03-17T21:55Z

TLE epoch observation values (Epoch: 2026-03-17T21:55:38.361Z)

Latitude

0.00004°

Longitude

-39.30948°

Altitude

909.06 km

Speed

7.395 km/s

True Right ascension

07h 00m 20s

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

15:58:00

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

904.925 km

Perigee altitude

892.181 km

Semi-major axis

7,276.69 km

Eccentricity

0.00088

Inclination

99.3467°

RAAN

105.0853°

Arg. of periapsis

139.856°

True anomaly

220.26022°

Mean anomaly

220.3251°

Eccentric anomaly

220.29265°

Mean motion

3.49657 °/min

Orbital period

102.96 mins

BSTAR

0.000025465

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

DELTA 1 DEB, 8389 (Decayed)

DELTA 1 DEB, 7891 (Decayed)

DELTA 1 DEB, 8577 (Decayed)

DELTA 1 DEB, 8321 (Decayed)

DELTA 1 DEB, 42559 (Decayed)

DELTA 1 DEB, 8508 (Decayed)

DELTA 1 DEB, 8433 (Decayed)

DELTA 1 R/B, 6127

DELTA 1 DEB, 42567

DELTA 1 DEB, 8099 (Decayed)

DELTA 1 DEB, 8098 (Decayed)

DELTA 1 DEB, 7863 (Decayed)

DELTA 1 DEB, 7974 (Decayed)

DELTA 1 DEB, 8432 (Decayed)

DELTA 1 DEB, 8574 (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	2026-03-18 13:59:21.682Z	36.82° NE	2026-03-18 14:03:21.682Z	90.561° ESE	30.106°	2026-03-18 14:08:21.682Z	160.996° S
8 mins	2026-03-18 15:41:21.682Z	348.143° N	2026-03-18 15:45:21.682Z	291.494° WNW	27.711°	2026-03-18 15:49:21.682Z	238.334° WSW
9 mins	2026-03-19 01:32:21.682Z	154.801° SSE	2026-03-19 01:36:21.682Z	92.237° ESE	43.727°	2026-03-19 01:41:21.682Z	350.499° N
4 mins	2026-03-19 03:17:21.682Z	252.966° W	2026-03-19 03:18:21.682Z	264.416° W	14.09°	2026-03-19 03:21:21.682Z	297.607° 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: 13 hours ago

TLE from 13 hours ago

TLE epoch observation values (Epoch: 2026-03-17T21:55:38.361Z)

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: 13 hours ago