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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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https://www.satcat.com/sats-embedded/1982?theme=dark&initialShowStats=false

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ISO8601 Format

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: 15 hours ago

TLE from 15 hours ago

0 ESSA 1 (OT-3)
1 01982U 66008A   25301.61509847  .00000282  00000-0  83260-4 0  9996
2 01982  97.8445 345.4424 0081284  99.7816 261.2569 14.48208850124422

Epoch: 2025-10-28T14:45Z

TLE epoch observation values (Epoch: 2025-10-28T14:45:44.507Z)

Latitude

-0.00009°

Longitude

86.80692°

Altitude

743.729 km

Speed

7.478 km/s

True Right ascension

23h 01m 46s

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

01:37:56

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

786.352 km

Perigee altitude

670.819 km

Semi-major axis

7,106.722 km

Eccentricity

0.00813

Inclination

97.8445°

RAAN

345.4424°

Arg. of periapsis

99.7816°

True anomaly

260.33774°

Mean anomaly

261.2569°

Eccentric anomaly

260.79717°

Mean motion

3.62276 °/min

Orbital period

99.37 mins

BSTAR

0.00008326

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

DELTA 1 DEB, 2085 (Decayed)

DELTA 1 R/B, 1983

DELTA 1 DEB, 2154

DELTA 1 DEB, 2118

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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	2025-10-29 16:13:05.869Z	359.654° N	2025-10-29 16:16:05.869Z	281.504° WNW	41.078°	2025-10-29 16:20:05.869Z	207.718° SW
7 mins	2025-10-30 03:22:05.869Z	185.171° SSW	2025-10-30 03:25:05.869Z	239.878° WSW	39.557°	2025-10-30 03:29:05.869Z	335.866° NNW

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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Click to sort rows by RSO header in ascending order	Click to sort rows by Country header in ascending order	Click to sort rows by Type header in ascending order	Click to sort rows by Inclination Δ header in ascending order	Click to sort rows by RAAN Δ header in ascending order	Click to sort rows by Coplanar Angle header in ascending order	Click to sort rows by SMA Δ header in ascending order	Click to sort rows by Orbital period header in ascending order	Click to sort rows by <5km Md TCA header in ascending order

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: 15 hours ago

TLE from 15 hours ago

TLE epoch observation values (Epoch: 2025-10-28T14:45:44.507Z)

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: 15 hours ago