ESSA 3 (TOS-A), 2435
Orbit data source: Space-Track
ESSA 3 (TOS-A), 2435 is a payload satellite owned by ESSA (US) in SSO that was launched on Sun, 02 Oct 1966 UTC via a THOR DELTA E 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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2435 intel report (Beta)
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TLE from 1 day ago
0 ESSA 3 (TOS-A)
1 02435U 66087A 25200.36986676 -.00000051 00000-0 -53031-4 0 9995
2 02435 101.0865 118.0061 0063899 342.8727 129.3240 12.56874820697198
TLE epoch observation values (Epoch: 2025-07-19T08:52:36.488Z)
Visualization orbit readout
Visualization observer readout
Orbital elements
Other satellites on launch #87 in the year 1966 (1966-10-02 UTC)
ESSA 3 (TOS-A) Visibility forecast
Observer location: undefined°, undefined°
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. |
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9 mins | 2025-07-20 09:42:32.656Z | 346.087° N | 2025-07-20 09:47:32.656Z | 308.767° NW | 16.544° | 2025-07-20 09:51:32.656Z | 278.287° WNW |
11 mins | 2025-07-20 16:55:32.656Z | 104.58° ESE | 2025-07-20 17:00:32.656Z | 56.075° ENE | 26.25° | 2025-07-20 17:06:32.656Z | 4.725° NNE |
14 mins | 2025-07-20 18:45:32.656Z | 178.071° S | 2025-07-20 18:52:32.656Z | 261.642° W | 41.707° | 2025-07-20 18:59:32.656Z | 335.68° NNW |
14 mins | 2025-07-21 06:46:32.656Z | 33.316° NE | 2025-07-21 06:52:32.656Z | 96.755° ESE | 36.851° | 2025-07-21 07:00:32.656Z | 172.705° S |
14 mins | 2025-07-21 08:38:32.656Z | 359.197° N | 2025-07-21 08:45:32.656Z | 290.913° WNW | 32.341° | 2025-07-21 08:52:32.656Z | 234.323° 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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