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ESSA 1 (OT-3), 1982

Orbit data source: Space-Track

ESSA 1 (OT-3), 1982 is a payload satellite owned by ESSA (US) in SSO that was launched on Thu, 03 Feb 1966 UTC via a THOR DELTA C launch vehicle from the Air Force Eastern Test Range (AFETR). 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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Identifier
1982, 1966-008A
Orbit
SSO
Last TLE update
8 hours ago
Origin
Manufacturer
RCA/East Windsor
Mission
Non-operational Civil Weather
Bus & Motor
TIROS I, Unknown motor
Mass
138 kg wet, 138 kg dry
Launch date (UTC)
1966-02-03 (59 years ago)
Launch vehicle
THOR DELTA C
Launch site
Air Force Eastern Test Range (AFETR)
Object type
Payload
Rocket body
Debris
Shape & HBR
Cyl, 1.07 m
Radar Cross Section
0.920 m², Medium (>0.1 m² and < 1m²)

Expand to show TLE details & history

TLE from 8 hours ago
0 ESSA 1 (OT-3)
1 01982U 66008A   25183.87954408  .00000158  00000-0  51410-4 0  9993
2 01982  97.8602 235.9636 0081415 103.3253 257.7036 14.48139924107388
Epoch: 2025-07-02T21:06Z
TLE epoch observation values (Epoch: 2025-07-02T21:06:32.608Z)
Latitude
-0°
Longitude
-1.82658°
Altitude
747.489 km
Speed
7.474 km/s
True Right ascension
15h 43m 51s
True Declination
0° 00' 00"
Sunlit
Object was in full shadow at epoch
Visualization orbit readout
Latitude
-73.27882°
Longitude
151.27524°
Altitude
810.007 km
Speed
7.42 km/s
Apparent Right ascension
03h 52m 33s
Apparent Declination
-58° 51' 24"
Sunlit
Object is in daylight
Visualization observer readout
Local Sidereal Time
16:40:02
Azimuth
162.216° S
Elevation
-69.615°
Doppler factor
1
Orbital elements
Apogee altitude
786.673 km
Perigee altitude
670.951 km
Semi-major axis
7,106.949 km
Eccentricity
0.00814
Inclination
97.8602°
RAAN
235.9636°
Arg. of periapsis
103.3253°
True anomaly
Unknown
Mean anomaly
257.7036°
Eccentric anomaly
Unknown
Mean motion
3.62258 °/min
Orbital period
99.38 mins
BSTAR
0.00005141
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Other satellites on launch #8 in the year 1966 (1966-02-03 UTC)

ESSA 1 (OT-3) 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.
8 mins2025-07-03 15:55:37.210Z27.742° NE2025-07-03 15:59:37.210Z107.254° ESE35.916°2025-07-03 16:03:37.210Z171.958° S
4 mins2025-07-03 17:35:37.210Z322.278° NNW2025-07-03 17:37:37.210Z291.905° WNW16.511°2025-07-03 17:39:37.210Z263.032° W
7 mins2025-07-04 03:05:37.210Z142.386° SSE2025-07-04 03:08:37.210Z86.281° E37.399°2025-07-04 03:12:37.210Z1.434° NNE
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