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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: 9 hours ago

TLE from 9 hours ago

0 ESSA 1 (OT-3)
1 01982U 66008A   26092.34167877  .00000292  00000-0  86095-4 0  9997
2 01982  97.8201 129.8730 0079233 339.5717  20.2314 14.48312310146963

Epoch: 2026-04-02T08:12Z

TLE epoch observation values (Epoch: 2026-04-02T08:12:01.045Z)

Latitude

-0.00002°

Longitude

176.1771°

Altitude

681.336 km

Speed

7.544 km/s

True Right ascension

08h 39m 29s

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

23:23:04

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

784.552 km

Perigee altitude

671.94 km

Semi-major axis

7,106.383 km

Eccentricity

0.00792

Inclination

97.8201°

RAAN

129.873°

Arg. of periapsis

339.5717°

True anomaly

20.54832°

Mean anomaly

20.2314°

Eccentric anomaly

20.38956°

Mean motion

3.62302 °/min

Orbital period

99.36 mins

BSTAR

0.000086095

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

DELTA 1 DEB, 2154

DELTA 1 DEB, 2118

DELTA 1 R/B, 1983

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.
7 mins	2026-04-03 02:34:14.080Z	173.73° S	2026-04-03 02:37:14.080Z	253.011° W	44.327°	2026-04-03 02:41:14.080Z	343.809° N
8 mins	2026-04-03 14:38:14.080Z	38.066° NE	2026-04-03 14:41:14.080Z	84.481° E	30.045°	2026-04-03 14:46:14.080Z	162.019° S
6 mins	2026-04-03 16:17:14.080Z	334.848° NNW	2026-04-03 16:20:14.080Z	285.365° WNW	24.242°	2026-04-03 16:23:14.080Z	243.131° 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: 9 hours ago

TLE from 9 hours ago

TLE epoch observation values (Epoch: 2026-04-02T08:12:01.045Z)

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: 9 hours ago