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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Edit Public Description
Identifier
Orbit
Country
USRelated business
Manufacturer
RCA/East Windsor
Mission
Non-operational Civil Weather
Bus & Motor
TIROS I, Unknown motor
Mass
148 kg wet, 148 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Cyl, 0.6 m
Radar Cross Section
0.994 m², Medium (>0.1 m² and < 1m²)
Expand to show TLE details & historyLast TLE update: 15 hours ago
TLE from 15 hours ago
0 ESSA 3 (TOS-A)
1 02435U 66087A 25241.28329025 -.00000035 00000-0 41288-4 0 9992
2 02435 101.0824 156.4866 0063436 260.7500 212.8155 12.56875235702333Epoch: 2025-08-29T06:47Z
TLE epoch observation values (Epoch: 2025-08-29T06:47:56.277Z)
Latitude
64.52901°
Longitude
-79.07867°
Altitude
1,488.605 km
Speed
7.106 km/s
True Right ascension
00h 02m 33s
True Declination
64° 24' 28"
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
13:42:27
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,482.921 km
Perigee altitude
1,383.815 km
Semi-major axis
7,811.505 km
Eccentricity
0.00634
Inclination
101.0824°
RAAN
156.4866°
Arg. of periapsis
260.75°
True anomaly
212.42417°
Mean anomaly
212.8155°
Eccentric anomaly
212.61957°
Mean motion
3.1437 °/min
Orbital period
114.51 mins
BSTAR
0.000041288
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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. |
|---|---|---|---|---|---|---|---|
| 11 mins | 2025-08-30 05:47:28.080Z | 48.828° ENE | 2025-08-30 05:52:28.080Z | 88.826° E | 20.425° | 2025-08-30 05:58:28.080Z | 137.5° SSE |
| 14 mins | 2025-08-30 07:39:28.080Z | 12.428° NNE | 2025-08-30 07:46:28.080Z | 264.002° W | 44.096° | 2025-08-30 07:53:28.080Z | 206.527° SW |
| 8 mins | 2025-08-30 09:33:28.080Z | 339.884° N | 2025-08-30 09:37:28.080Z | 308.245° NW | 16.997° | 2025-08-30 09:41:28.080Z | 277.21° WNW |
| 12 mins | 2025-08-30 16:44:28.080Z | 107.073° ESE | 2025-08-30 16:50:28.080Z | 53.114° ENE | 26.149° | 2025-08-30 16:56:28.080Z | 4.46° NNE |
| 14 mins | 2025-08-30 18:35:28.080Z | 177.022° S | 2025-08-30 18:42:28.080Z | 273.446° WNW | 42.319° | 2025-08-30 18:49:28.080Z | 336.845° NNW |
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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Authenticating...
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