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.
Request partner network tasking
Embed this page
2435 intel report (Beta)
Edit Public Description
Edit Sat Name
Create New Watchlist
Expand to show TLE details & historyLast TLE update: 15 hours ago
TLE from 15 hours ago
0 ESSA 3 (TOS-A)
1 02435U 66087A 26150.33713830 -.00000032 00000-0 55500-4 0 9998
2 02435 101.0792 54.2127 0064467 73.8233 40.8733 12.56880138736766TLE epoch observation values (Epoch: 2026-05-30T08:05:28.749Z)
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
Loading observer location...
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. |
|---|---|---|---|---|---|---|---|
| 12 mins | 2026-05-31 05:09:17.735Z | 45.238° ENE | 2026-05-31 05:15:17.735Z | 98.402° ESE | 23.399° | 2026-05-31 05:21:17.735Z | 146.855° SSE |
| 14 mins | 2026-05-31 07:01:17.735Z | 9.209° NNE | 2026-05-31 07:08:17.735Z | 279.45° WNW | 42.323° | 2026-05-31 07:15:17.735Z | 213.087° SW |
| 5 mins | 2026-05-31 08:57:17.735Z | 325.767° NNW | 2026-05-31 08:59:17.735Z | 309.683° NW | 13.8° | 2026-05-31 09:02:17.735Z | 286.767° WNW |
| 11 mins | 2026-05-31 16:07:17.735Z | 111.211° ESE | 2026-05-31 16:12:17.735Z | 62.113° ENE | 28.463° | 2026-05-31 16:18:17.735Z | 4.888° NNE |
| 14 mins | 2026-05-31 17:58:17.735Z | 184.888° SSW | 2026-05-31 18:04:17.735Z | 248.074° W | 39.214° | 2026-05-31 18:12:17.735Z | 334.525° NNW |
Co-orbital & Co-planar RSOs
Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions
Click to sort rows by RSO header in ascending order | Click to sort rows by Country header in ascending order | Click to sort rows by Type header in ascending order | Click to sort rows by Inclination Δ header in ascending order | Click to sort rows by RAAN Δ header in ascending order | Click to sort rows by Coplanar Angle header in ascending order | Click to sort rows by SMA Δ header in ascending order | Click to sort rows by Orbital period header in ascending order | Click to sort rows by <5km Md TCA header in descending order |
|---|
Click to sort rows by Secondary header in ascending order | Click to sort rows by Secondary name header in ascending order | Click to sort rows by Country header in ascending order | Click to sort rows by Owner header in ascending order | Click to sort rows by Obj. Type header in ascending order | Click to sort rows by Miss dist. header in ascending order | Click to sort rows by Rel. speed header in ascending order | Click to sort rows by Apr. angle header in ascending order | Click to sort rows by TCA header in descending order |
|---|