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.
Focus sentinelFocus sentinel
Request partner network tasking
Focus sentinelFocus sentinel
Embed this page
Focus sentinelFocus sentinel
6126 intel report (Beta)
Focus sentinelFocus sentinel
Edit Public Description
Focus sentinelFocus sentinel
Edit Sat Name
Focus sentinelFocus sentinel
Create New Watchlist
Identifier
Orbit
Country
USRelated business
Manufacturer
GE/MSVD
Mission
Non-operational spacecraft
Bus & Motor
NIMBUS, Unknown motor
Mass
891 kg wet, 891 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
CONE + 2 PAN, 1.9 m
Radar Cross Section
Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 5 hours ago
TLE from 5 hours ago
0 LANDSAT 1 (ERTS 1)
1 6126U 72058A 26219.85477706 -.00000055 00000-0 -65312-5 0 9995
2 6126 99.3343 250.4586 0008963 113.1545 247.0562 13.97837380755174Epoch: 2026-08-07T20:30Z
TLE epoch observation values (Epoch: 2026-08-07T20:30:52.737Z)
Latitude
-0.00009°
Longitude
-13.63562°
Altitude
906.706 km
Speed
7.397 km/s
True Right ascension
16h 41m 50s
True Declination
0° 00' 00"
Sunlit
Visualization orbit readout
Latitude
Unknown
Longitude
Unknown
Altitude
Unknown
Speed
Unknown
Apparent Right ascension
Unknown
Apparent Declination
Unknown
Sunlit
Visualization observer readout
Local Sidereal Time
15:09:29
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
905.035 km
Perigee altitude
891.99 km
Semi-major axis
7,276.65 km
Eccentricity
0.0009
Inclination
99.3343°
RAAN
250.4586°
Arg. of periapsis
113.1545°
True anomaly
246.96166°
Mean anomaly
247.0562°
Eccentric anomaly
247.00893°
Mean motion
3.4966 °/min
Orbital period
102.96 mins
BSTAR
-0.0000065312
Loading maneuver chart data...
Computing Atmospheric mass density...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Other satellites on launch #58 in the year 1972 (1972-07-23 UTC)
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.LANDSAT 1 (ERTS 1) Visibility forecast
Loading 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. |
|---|---|---|---|---|---|---|---|
| 10 mins | 2026-08-08 01:46:43.568Z | 154.358° SSE | 2026-08-08 01:51:43.568Z | 85.09° E | 43.208° | 2026-08-08 01:56:43.568Z | 351.553° N |
| 4 mins | 2026-08-08 03:32:43.568Z | 253.047° W | 2026-08-08 03:33:43.568Z | 264.866° W | 14.841° | 2026-08-08 03:36:43.568Z | 298.682° NW |
| 8 mins | 2026-08-08 14:18:43.568Z | 44.712° NE | 2026-08-08 14:21:43.568Z | 92.499° ESE | 30.352° | 2026-08-08 14:26:43.568Z | 161.682° S |
| 8 mins | 2026-08-08 15:59:43.568Z | 347.358° N | 2026-08-08 16:03:43.568Z | 289.737° WNW | 27.529° | 2026-08-08 16:07:43.568Z | 237.98° WSW |
Co-orbital & Co-planar RSOs
Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions
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 |
|---|