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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Expand to show TLE details & historyLast TLE update: 15 hours ago
TLE from 15 hours ago
0 ESSA 3 (TOS-A)
1 2435U 66087A 26129.32236285 -.00000035 00000-0 35941-4 0 9997
2 2435 101.0807 34.4600 0064331 115.4796 354.1787 12.56879943734126TLE epoch observation values (Epoch: 2026-05-09T07:44:12.150Z)
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
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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. |
|---|---|---|---|---|---|---|---|
| 9 mins | 2026-05-10 04:51:05.745Z | 55.907° ENE | 2026-05-10 04:55:05.745Z | 87.684° E | 16.242° | 2026-05-10 05:00:05.745Z | 127.354° SE |
| 14 mins | 2026-05-10 06:42:05.745Z | 16.033° NNE | 2026-05-10 06:49:05.745Z | 225.293° WSW | 44.935° | 2026-05-10 06:56:05.745Z | 199.777° SSW |
| 8 mins | 2026-05-10 08:37:05.745Z | 336.414° NNW | 2026-05-10 08:40:05.745Z | 310.297° NW | 18.466° | 2026-05-10 08:45:05.745Z | 268.922° W |
| 10 mins | 2026-05-10 15:49:05.745Z | 96.518° ESE | 2026-05-10 15:54:05.745Z | 50.958° ENE | 22.477° | 2026-05-10 15:59:05.745Z | 9.517° NNE |
| 14 mins | 2026-05-10 17:39:05.745Z | 170.28° S | 2026-05-10 17:45:05.745Z | 231.265° WSW | 44.024° | 2026-05-10 17:53:05.745Z | 340.188° N |
| 5 mins | 2026-05-10 19:37:05.745Z | 255.939° W | 2026-05-10 19:39:05.745Z | 271.191° WNW | 12.565° | 2026-05-10 19:42:05.745Z | 293.762° NW |
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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