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ESSA 3 (TOS-A), 2435

Orbit data source: Space-Track

ESSA 3 (TOS-A), 2435 is a payload satellite owned by ESSA (US) in SSO that was launched on Sun, 02 Oct 1966 UTC via a THOR DELTA E launch vehicle from the Air Force Western Test Range (AFWTR). 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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<iframe src="https://www.satcat.com/sats-embedded/2435?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/2435?theme=dark&initialShowStats=false

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ISO8601 Format

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ISO8601 Format

Identifier

2435, 1966-087A

Orbit

SSO

Last TLE update

14 hours ago

Origin

National Oceanic and Atmospheric Administration (US)

Manufacturer

RCA/East Windsor

Mission

Non-operational Civil Weather

Bus & Motor

TIROS I, Unknown motor

Mass

148 kg wet, 148 kg dry

Launch date (UTC)

1966-10-02 (59 years ago)

Launch vehicle

THOR DELTA E

Launch site

Air Force Western Test Range (AFWTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Cyl, 1.1 m

Radar Cross Section

0.994 m², Medium (>0.1 m² and < 1m²)

Expand to show TLE details & history

TLE from 14 hours ago

0 ESSA 3 (TOS-A)
1 02435U 66087A   25128.72204795 -.00000046  00000-0 -27210-4 0  9993
2 02435 101.0904  50.5989 0064299 124.9859 301.8568 12.56873776688190

Epoch: 2025-05-08T17:19Z

Definitive object data (Epoch: 2025-05-08T17:19:44.942Z)

Latitude

63.97871°

Longitude

-99.67594°

Altitude

1,420.456 km

Speed

7.168 km/s

True Right ascension

01h 48m 11s

True Declination

63° 51' 16"

Sunlit

Object was in daylight at TLE epoch

Visualization TLE readout

Latitude

-73.85385°

Longitude

62.07857°

Altitude

1,497.703 km

Speed

7.099 km/s

Apparent Right ascension

05h 34m 21s

Apparent Declination

-71° 42' 06"

Sunlit

Object is in daylight

Visualization observer readout

Local Sidereal Time

15:51:50

Azimuth

193.953° SSW

Elevation

-55.724°

Doppler factor

Orbital elements

Apogee altitude

1,483.602 km

Perigee altitude

1,383.148 km

Semi-major axis

7,811.512 km

Eccentricity

0.0064299

Inclination

101.0904°

RAAN

50.5989°

Arg. of periapsis

124.9859°

True anomaly

301.22832°

Mean anomaly

301.8568°

Eccentric anomaly

301.54283°

Mean motion

3.1437 °/min

BSTAR

-0.00002721

Orbital period

114.51 mins

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Other satellites on launch #87 in the year 1966 (1966-10-02 UTC)

ESSA 3 (TOS-A) Visibility forecast

Observer location: undefined°, undefined°

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.
13 mins	2025-05-09 08:51:48.293Z	359.079° N	2025-05-09 08:57:48.293Z	303.881° NW	31.47°	2025-05-09 09:04:48.293Z	236.483° WSW
14 mins	2025-05-09 17:55:48.293Z	139.589° SSE	2025-05-09 18:02:48.293Z	58.609° ENE	40.033°	2025-05-09 18:09:48.293Z	352.411° N
12 mins	2025-05-09 19:49:48.293Z	211.888° SW	2025-05-09 19:55:48.293Z	269.16° W	26.909°	2025-05-09 20:01:48.293Z	320.679° NNW
8 mins	2025-05-10 05:57:48.293Z	59.467° ENE	2025-05-10 06:01:48.293Z	92.456° ESE	16.308°	2025-05-10 06:05:48.293Z	124.485° SE

Authenticating...

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Check out ESSA 3 (TOS-A), 2435 on other resources

View ESSA 3 (TOS-A), 2435 on NASA - NSSDCA Website

View ESSA 3 (TOS-A), 2435 on Heavens-Above

View ESSA 3 (TOS-A), 2435 on Keep Track

View ESSA 3 (TOS-A), 2435 on Celestrak

View ESSA 3 (TOS-A), 2435 on Gunter's Space Page

Satcat and Kayhan Space are not affiliated with NASA, Celestrak, Heavens-Above, Keep Track, or Gunter's Space Page.