Showing default

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.

Loading next visibility...

Iframe embed code

<iframe src="https://www.satcat.com/sats-embedded/6126?theme=dark&initialShowStats=false" width="600" height="400" frameborder="0" title="Kayhan Space Satcat Satellite Viewer"></iframe>

Iframe URL

https://www.satcat.com/sats-embedded/6126?theme=dark&initialShowStats=false

Optional secondary NORAD IDs

Max 10 NORAD IDs; Separated by commas

Initial load time (optional)

ISO8601 Format

TLE date request (optional)

ISO8601 Format

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, 2.3 m

Radar Cross Section

Large (>1 m²)

Expand to show TLE details & history
Last TLE update: 9 hours ago

TLE from 9 hours ago

0 LANDSAT 1 (ERTS 1)
1 06126U 72058A   26303.81520873  .00000202  00000-0  17541-3 0  9990
2 06126  99.3247 335.7570 0006943 243.3603 116.6848 13.97847740766906

Epoch: 2026-10-30T19:33Z

TLE epoch observation values (Epoch: 2026-10-30T19:33:54.034Z)

Latitude

-0.00005°

Longitude

3.15199°

Altitude

906.394 km

Speed

7.398 km/s

True Right ascension

22h 23m 01s

True Declination

0° 00' 00"

Sunlit

Object was in full shadow 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

23:48:58

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

903.528 km

Perigee altitude

893.424 km

Semi-major axis

7,276.613 km

Eccentricity

0.00069

Inclination

99.3247°

RAAN

335.757°

Arg. of periapsis

243.3603°

True anomaly

116.75586°

Mean anomaly

116.6848°

Eccentric anomaly

116.72033°

Mean motion

3.49663 °/min

Orbital period

102.96 mins

BSTAR

0.00017541

Loading maneuver chart data...

Computing Atmospheric mass density...

Loading historical data...

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

DELTA 1 DEB, 7895 (Decayed)

DELTA 1 DEB, 8577 (Decayed)

DELTA 1 DEB, 9727 (Decayed)

DELTA 1 DEB, 8094 (Decayed)

DELTA 1 DEB, 7843 (Decayed)

DELTA 1 DEB, 7929 (Decayed)

DELTA 1 DEB, 8384 (Decayed)

DELTA 1 DEB, 8382 (Decayed)

DELTA 1 DEB, 7886 (Decayed)

DELTA 1 DEB, 7847 (Decayed)

DELTA 1 DEB, 9729 (Decayed)

DELTA 1 DEB, 7856 (Decayed)

DELTA 1 DEB, 8532 (Decayed)

DELTA 1 DEB, 8379 (Decayed)

DELTA 1 DEB, 7967 (Decayed)

Did you know?

You can import UDL-sourced sensor .json files into the Sandbox to generate a visibility chart that accounts for multi-vendor sensor geometry.

Click here to try in Sandbox

LANDSAT 1 (ERTS 1) Visibility forecast

Loading observer location...
Set Observer location

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.
11 mins	2026-10-31 15:02:30.656Z	18.552° NNE	2026-10-31 15:07:30.656Z	77.607° E	72.466°	2026-10-31 15:13:30.656Z	188.854° SSW
5 mins	2026-10-31 16:46:30.656Z	327.126° NNW	2026-10-31 16:48:30.656Z	303.951° NW	16.76°	2026-10-31 16:51:30.656Z	269.405° W
6 mins	2026-11-01 00:56:30.656Z	97.02° ESE	2026-11-01 00:59:30.656Z	57.88° ENE	21.669°	2026-11-01 01:02:30.656Z	21.822° NNE
9 mins	2026-11-01 02:36:30.656Z	186.408° SSW	2026-11-01 02:40:30.656Z	261.806° W	56.139°	2026-11-01 02:45:30.656Z	335.34° NNW

Items per page:

1–4 of 4 items

of 1 page

Co-orbital & Co-planar RSOs

Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions

Please sign in to view Co-orbital & Co-planar RSOs.

Click to sort rows by RSO header in ascending order	Click to sort rows by Country header in ascending order	Click to sort rows by Type header in ascending order	Click to sort rows by Inclination Δ header in ascending order	Click to sort rows by RAAN Δ header in ascending order	Click to sort rows by Coplanar Angle header in ascending order	Click to sort rows by SMA Δ header in ascending order	Click to sort rows by Orbital period header in ascending order	Click to sort rows by <5km Md TCA header in descending order

CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings

Authenticating...

Click to sort rows by Secondary header in ascending order	Click to sort rows by Secondary name header in ascending order	Click to sort rows by Country header in ascending order	Click to sort rows by Owner header in ascending order	Click to sort rows by Obj. Type header in ascending order	Click to sort rows by Miss dist. header in ascending order	Click to sort rows by Rel. speed header in ascending order	Click to sort rows by Apr. angle header in ascending order	Click to sort rows by TCA header in descending order

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: 9 hours ago

TLE from 9 hours ago

TLE epoch observation values (Epoch: 2026-10-30T19:33:54.034Z)

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: 9 hours ago