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: 7 hours ago
TLE from 7 hours ago
0 LANDSAT 1 (ERTS 1)
1 6126U 72058A 25306.48682382 .00000330 00000-0 26636-3 0 9996
2 6126 99.3603 327.1771 0008601 146.0073 214.1642 13.97809490716285Epoch: 2025-11-02T11:41Z
TLE epoch observation values (Epoch: 2025-11-02T11:41:01.578Z)
Latitude
0.00005°
Longitude
109.91866°
Altitude
909.436 km
Speed
7.395 km/s
True Right ascension
21h 48m 42s
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
14:05:42
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
904.869 km
Perigee altitude
892.352 km
Semi-major axis
7,276.748 km
Eccentricity
0.00086
Inclination
99.3603°
RAAN
327.1771°
Arg. of periapsis
146.0073°
True anomaly
214.1089°
Mean anomaly
214.1642°
Eccentric anomaly
214.13655°
Mean motion
3.49653 °/min
Orbital period
102.96 mins
BSTAR
0.00026636
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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 | 2025-11-02 23:53:05.404Z | 92.284° ESE | 2025-11-02 23:56:05.404Z | 59.701° ENE | 15.155° | 2025-11-02 23:59:05.404Z | 26.7° NE |
| 9 mins | 2025-11-03 01:33:05.404Z | 170.882° S | 2025-11-03 01:37:05.404Z | 253.478° W | 44.445° | 2025-11-03 01:42:05.404Z | 342.365° N |
| 9 mins | 2025-11-03 14:03:05.404Z | 28.017° NE | 2025-11-03 14:07:05.404Z | 91.05° ESE | 39.094° | 2025-11-03 14:12:05.404Z | 176.3° S |
| 6 mins | 2025-11-03 15:46:05.404Z | 330.731° NNW | 2025-11-03 15:48:05.404Z | 304.915° NW | 20.112° | 2025-11-03 15:52:05.404Z | 255.094° W |
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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