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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: 3 hours ago

TLE from 3 hours ago

0 ESSA 1 (OT-3)
1 01982U 66008A   26120.59798558  .00000163  00000-0  53052-4 0  9996
2 01982  97.8154 156.0390 0078448 250.9030 108.3658 14.48322755151054

Epoch: 2026-04-30T14:21Z

TLE epoch observation values (Epoch: 2026-04-30T14:21:05.954Z)

Latitude

-0.00002°

Longitude

82.2219°

Altitude

752.081 km

Speed

7.469 km/s

True Right ascension

10h 24m 09s

True Declination

0° 00' 00"

Sunlit

Object was in full shadow 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

01:20:41

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

783.959 km

Perigee altitude

672.463 km

Semi-major axis

7,106.348 km

Eccentricity

0.00784

Inclination

97.8154°

RAAN

156.039°

Arg. of periapsis

250.903°

True anomaly

109.2163°

Mean anomaly

108.3658°

Eccentric anomaly

108.79132°

Mean motion

3.62304 °/min

Orbital period

99.36 mins

BSTAR

0.000053052

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

DELTA 1 DEB, 2154

DELTA 1 R/B, 1983

DELTA 1 DEB, 2118

DELTA 1 DEB, 2085 (Decayed)

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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.
9 mins	2026-05-01 02:04:25.769Z	154.11° SSE	2026-05-01 02:09:25.769Z	41.885° NE	41.259°	2026-05-01 02:13:25.769Z	354.838° N
5 mins	2026-05-01 14:11:25.769Z	62.263° ENE	2026-05-01 14:13:25.769Z	93.954° ESE	20.221°	2026-05-01 14:16:25.769Z	136.636° SSE
7 mins	2026-05-01 15:48:25.769Z	350.963° N	2026-05-01 15:51:25.769Z	302.556° NW	32.585°	2026-05-01 15:55:25.769Z	225.85° WSW

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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: 3 hours ago

TLE from 3 hours ago

TLE epoch observation values (Epoch: 2026-04-30T14:21:05.954Z)

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: 3 hours ago