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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: 16 hours ago

TLE from 16 hours ago

0 ESSA 1 (OT-3)
1 01982U 66008A   26106.08983398  .00000069  00000-0  28889-4 0  9997
2 01982  97.8178 142.6058 0078498 296.5566  62.7598 14.48317986148958

Epoch: 2026-04-16T02:09Z

TLE epoch observation values (Epoch: 2026-04-16T02:09:21.655Z)

Latitude

-0.00004°

Longitude

-93.9768°

Altitude

708.927 km

Speed

7.515 km/s

True Right ascension

09h 30m 25s

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

00:50:35

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

784.01 km

Perigee altitude

672.443 km

Semi-major axis

7,106.364 km

Eccentricity

0.00785

Inclination

97.8178°

RAAN

142.6058°

Arg. of periapsis

296.5566°

True anomaly

63.56314°

Mean anomaly

62.7598°

Eccentric anomaly

63.16111°

Mean motion

3.62303 °/min

Orbital period

99.36 mins

BSTAR

0.000028889

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

DELTA 1 R/B, 1983

DELTA 1 DEB, 2085 (Decayed)

DELTA 1 DEB, 2118

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.
7 mins	2026-04-17 01:30:27.881Z	121.708° SE	2026-04-17 01:34:27.881Z	60.554° ENE	24.816°	2026-04-17 01:37:27.881Z	16.947° NNE
7 mins	2026-04-17 03:09:27.881Z	212.532° SW	2026-04-17 03:12:27.881Z	267.084° W	27.98°	2026-04-17 03:16:27.881Z	325.351° NNW
8 mins	2026-04-17 15:13:27.881Z	14.623° NNE	2026-04-17 15:16:27.881Z	30.147° NE	43.801°	2026-04-17 15:21:27.881Z	191.49° SSW

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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: 16 hours ago

TLE from 16 hours ago

TLE epoch observation values (Epoch: 2026-04-16T02:09:21.655Z)

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: 16 hours ago