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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6126 intel report (Beta)
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Edit Public Description
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
Unknown
Radar Cross Section
Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 12 hours ago
TLE from 12 hours ago
0 LANDSAT 1 (ERTS 1)
1 6126U 72058A 25355.80469795 -.00000169 00000-0 -86482-4 0 9995
2 6126 99.3555 17.4145 0008340 23.4224 336.7316 13.97820606723178Epoch: 2025-12-21T19:18Z
TLE epoch observation values (Epoch: 2025-12-21T19:18:45.902Z)
Latitude
-0.0001°
Longitude
-2.88863°
Altitude
898.637 km
Speed
7.406 km/s
True Right ascension
01h 09m 39s
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
06:32:55
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
904.641 km
Perigee altitude
892.503 km
Semi-major axis
7,276.709 km
Eccentricity
0.00083
Inclination
99.3555°
RAAN
17.4145°
Arg. of periapsis
23.4224°
True anomaly
336.69381°
Mean anomaly
336.7316°
Eccentric anomaly
336.71271°
Mean motion
3.49656 °/min
Orbital period
102.96 mins
BSTAR
-0.000086482
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Other satellites on launch #58 in the year 1972 (1972-07-23 UTC)
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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
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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. |
|---|---|---|---|---|---|---|---|
| 6 mins | 2025-12-22 13:06:56.630Z | 57.489° ENE | 2025-12-22 13:09:56.630Z | 89.806° E | 14.8° | 2025-12-22 13:12:56.630Z | 122.882° SE |
| 9 mins | 2025-12-22 14:47:56.630Z | 7.781° NNE | 2025-12-22 14:51:56.630Z | 310.04° NW | 43.182° | 2025-12-22 14:56:56.630Z | 205.918° SW |
| 9 mins | 2025-12-23 00:38:56.630Z | 125.668° SE | 2025-12-23 00:43:56.630Z | 57.633° ENE | 28.293° | 2025-12-23 00:47:56.630Z | 7.797° NNE |
| 8 mins | 2025-12-23 02:21:56.630Z | 211.194° SW | 2025-12-23 02:24:56.630Z | 258.732° W | 29.38° | 2025-12-23 02:29:56.630Z | 325.391° NNW |
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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