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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

Country

Related business

National Oceanic and Atmospheric Administration (US)

Manufacturer

RCA/East Windsor

Mission

Non-operational spacecraft

Bus & Motor

TIROS I, Unknown motor

Mass

138 kg wet, 138 kg dry

Launch date (UTC)

1966-02-03 (60 years ago)

Launch vehicle

THOR DELTA C

Launch site

Air Force Eastern Test Range (AFETR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Unknown

Radar Cross Section

Medium (>0.1 m² and <1 m²)

Expand to show TLE details & history
Last TLE update: 13 hours ago

TLE from 13 hours ago

0 ESSA 1 (OT-3)
1  1982U 66008A   26131.09915270  .00000062  00000-0  26890-4 0  9993
2  1982  97.8139 165.7599 0078927 217.9710 141.5904 14.48326124152570

Epoch: 2026-05-11T02:22Z

TLE epoch observation values (Epoch: 2026-05-11T02:22:46.793Z)

Latitude

-0.00008°

Longitude

-98.82781°

Altitude

778.248 km

Speed

7.442 km/s

True Right ascension

11h 03m 02s

True Declination

0° 00' 00"

Sunlit

Object was in daylight at epoch

Visualization orbit readout

Latitude

Unknown

Longitude

Unknown

Altitude

Unknown

Speed

Unknown

Apparent Right ascension

Unknown

Apparent Declination

Unknown

Sunlit

N/A

Visualization observer readout

Local Sidereal Time

23:55:57

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

784.288 km

Perigee altitude

672.112 km

Semi-major axis

7,106.337 km

Eccentricity

0.00789

Inclination

97.8139°

RAAN

165.7599°

Arg. of periapsis

217.971°

True anomaly

142.14799°

Mean anomaly

141.5904°

Eccentric anomaly

141.86962°

Mean motion

3.62305 °/min

Orbital period

99.36 mins

BSTAR

0.00002689

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Other satellites on launch #8 in the year 1966 (1966-02-03 UTC)

DELTA 1 DEB, 2085 (Decayed)

DELTA 1 DEB, 2118

DELTA 1 R/B, 1983

DELTA 1 DEB, 2154

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ESSA 1 (OT-3) 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.
6 mins	2026-05-11 16:13:40.481Z	336.249° NNW	2026-05-11 16:16:40.481Z	291.504° WNW	20.628°	2026-05-11 16:19:40.481Z	248.445° W
8 mins	2026-05-12 01:43:40.481Z	135.686° SSE	2026-05-12 01:47:40.481Z	61.21° ENE	34.09°	2026-05-12 01:51:40.481Z	3.722° NNE
6 mins	2026-05-12 03:23:40.481Z	234.025° WSW	2026-05-12 03:25:40.481Z	264.01° W	20.65°	2026-05-12 03:29:40.481Z	316.276° NNW
8 mins	2026-05-12 15:26:40.481Z	1.924° NNE	2026-05-12 15:29:40.481Z	316.112° NNW	40.308°	2026-05-12 15:34:40.481Z	206.531° SW

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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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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings

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Check out ESSA 1 (OT-3), 1982 on other resources

View ESSA 1 (OT-3), 1982 on NASA - NSSDCA Website

View ESSA 1 (OT-3), 1982 on Heavens-Above

View ESSA 1 (OT-3), 1982 on Keep Track

View ESSA 1 (OT-3), 1982 on Celestrak

View ESSA 1 (OT-3), 1982 on Gunter's Space Page

Satcat and Kayhan Space are not affiliated with NASA, Celestrak, Heavens-Above, Keep Track, or Gunter's Space Page.

ESSA 1 (OT-3), 1982

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 13 hours ago

TLE from 13 hours ago

TLE epoch observation values (Epoch: 2026-05-11T02:22:46.793Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #8 in the year 1966 (1966-02-03 UTC)

ESSA 1 (OT-3) Visibility forecast

Co-orbital & Co-planar RSOs

Check out ESSA 1 (OT-3), 1982 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 13 hours ago