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 Civil Imaging
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, 1.6 m
Radar Cross Section
2.170 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 7 hours ago
TLE from 7 hours ago
0 LANDSAT 1 (ERTS 1)
1 06126U 72058A 25259.60231043 -.00000181 00000-0 -94703-4 0 9998
2 06126 99.3649 279.3864 0007194 280.0765 79.9585 13.97801466709739Epoch: 2025-09-16T14:27Z
TLE epoch observation values (Epoch: 2025-09-16T14:27:19.621Z)
Latitude
-0.00003°
Longitude
66.76439°
Altitude
903.371 km
Speed
7.401 km/s
True Right ascension
18h 37m 32s
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
14:30:58
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
903.874 km
Perigee altitude
893.404 km
Semi-major axis
7,276.776 km
Eccentricity
0.00072
Inclination
99.3649°
RAAN
279.3864°
Arg. of periapsis
280.0765°
True anomaly
80.03969°
Mean anomaly
79.9585°
Eccentric anomaly
79.99909°
Mean motion
3.49651 °/min
Orbital period
102.96 mins
BSTAR
-0.000094703
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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. |
|---|---|---|---|---|---|---|---|
| 10 mins | 2025-09-17 00:53:05.307Z | 144.487° SSE | 2025-09-17 00:58:05.307Z | 57.522° ENE | 39.279° | 2025-09-17 01:03:05.307Z | 355.227° N |
| 6 mins | 2025-09-17 02:37:05.307Z | 233.178° WSW | 2025-09-17 02:40:05.307Z | 271.436° WNW | 18.875° | 2025-09-17 02:43:05.307Z | 306.596° NW |
| 8 mins | 2025-09-17 13:24:05.307Z | 45.278° ENE | 2025-09-17 13:28:05.307Z | 100.804° ESE | 25.444° | 2025-09-17 13:32:05.307Z | 150.709° SSE |
| 8 mins | 2025-09-17 15:06:05.307Z | 349.29° N | 2025-09-17 15:09:05.307Z | 303.744° NW | 32.261° | 2025-09-17 15:14:05.307Z | 228.356° WSW |
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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