Showing default

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.

Loading next visibility...

Iframe embed code

<iframe src="https://www.satcat.com/sats-embedded/1982?theme=dark&initialShowStats=false" width="600" height="400" frameborder="0" title="Kayhan Space Satcat Satellite Viewer"></iframe>

Iframe URL

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

Optional Secondary NORAD IDs

Max 10 NORAD IDs; Separated by commas

Initial load time (optional)

ISO8601 Format

TLE date request (optional)

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: 10 hours ago

TLE from 10 hours ago

0 ESSA 1 (OT-3)
1  1982U 66008A   25336.85134725  .00000300  00000-0  88376-4 0  9993
2  1982  97.8390  18.1526 0079651 352.0025   7.9894 14.48236064129520

Epoch: 2025-12-02T20:25Z

TLE epoch observation values (Epoch: 2025-12-02T20:25:56.402Z)

Latitude

-0.00002°

Longitude

-0.26297°

Altitude

678.314 km

Speed

7.547 km/s

True Right ascension

01h 12m 36s

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

04:31:11

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

785.101 km

Perigee altitude

671.891 km

Semi-major axis

7,106.633 km

Eccentricity

0.00797

Inclination

97.839°

RAAN

18.1526°

Arg. of periapsis

352.0025°

True anomaly

8.11752°

Mean anomaly

7.9894°

Eccentric anomaly

8.05333°

Mean motion

3.62282 °/min

Orbital period

99.37 mins

BSTAR

0.000088376

Loading maneuver chart data...

Computing Atmospheric mass density...

Loading historical data...

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

DELTA 1 R/B, 1983

DELTA 1 DEB, 2154

DELTA 1 DEB, 2085 (Decayed)

DELTA 1 DEB, 2118

Did you know?

You can import UDL-sourced sensor .json files into the Sandbox to generate a visibility chart that accounts for multi-vendor sensor geometry.

Click here to try in Sandbox

ESSA 1 (OT-3) Visibility forecast

Loading observer location...
Set Observer location

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.
8 mins	2025-12-03 15:15:15.187Z	30.96° NE	2025-12-03 15:19:15.187Z	102.538° ESE	34.681°	2025-12-03 15:23:15.187Z	166.625° S
5 mins	2025-12-03 16:55:15.187Z	323.926° NNW	2025-12-03 16:57:15.187Z	292.499° WNW	20.881°	2025-12-03 17:00:15.187Z	251.066° W
7 mins	2025-12-04 02:25:15.187Z	133.857° SE	2025-12-04 02:28:15.187Z	68.306° E	34.403°	2025-12-04 02:32:15.187Z	2.828° NNE
4 mins	2025-12-04 04:05:15.187Z	244.558° WSW	2025-12-04 04:07:15.187Z	276.154° WNW	16.874°	2025-12-04 04:09:15.187Z	303.813° NW

Items per page:

1–4 of 4 items

of 1 page

Co-orbital & Co-planar RSOs

Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions

Please sign-in to view Co-orbital & Co-planar RSOs.

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 descending order

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

Authenticating...

Click to sort rows by Secondary header in ascending order	Click to sort rows by Secondary name header in ascending order	Click to sort rows by Country header in ascending order	Click to sort rows by Owner header in ascending order	Click to sort rows by Obj. Type header in ascending order	Click to sort rows by Miss dist. header in ascending order	Click to sort rows by Rel. speed header in ascending order	Click to sort rows by Apr. angle header in ascending order	Click to sort rows by TCA header in descending order

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: 10 hours ago

TLE from 10 hours ago

TLE epoch observation values (Epoch: 2025-12-02T20:25:56.402Z)

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: 10 hours ago