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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

Identifier

2435, 1966-087A

Orbit

SSO

Last TLE update

9 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 9 hours ago

0 ESSA 3 (TOS-A)
1 02435U 66087A   25182.76625177 -.00000034  00000-0  44522-4 0  9999
2 02435 101.0881 101.4458 0064246  17.8976  37.4831 12.56874684694981

Epoch: 2025-07-01T18:23Z

TLE epoch observation values (Epoch: 2025-07-01T18:23:24.152Z)

Latitude

54.38117°

Longitude

-110.25664°

Altitude

1,404.931 km

Speed

7.181 km/s

True Right ascension

05h 42m 36s

True Declination

54° 13' 54"

Sunlit

Object was in daylight at epoch

Visualization orbit readout

Latitude

28.28712°

Longitude

-100.11697°

Altitude

1,389.921 km

Speed

7.19 km/s

Apparent Right ascension

05h 11m 20s

Apparent Declination

-2° 08' 07"

Sunlit

Object is in daylight

Visualization observer readout

Local Sidereal Time

15:29:18

Azimuth

321.962° NNW

Elevation

-45.695°

Doppler factor

Orbital elements

Apogee altitude

1,483.557 km

Perigee altitude

1,383.185 km

Semi-major axis

7,811.508 km

Eccentricity

0.00642

Inclination

101.0881°

RAAN

101.4458°

Arg. of periapsis

17.8976°

True anomaly

Unknown

Mean anomaly

37.4831°

Eccentric anomaly

Unknown

Mean motion

3.1437 °/min

Orbital period

114.51 mins

BSTAR

0.000044522

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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	2025-07-02 06:12:00.265Z	39.82° NE	2025-07-02 06:19:00.265Z	98.895° ESE	25.051°	2025-07-02 06:25:00.265Z	148.135° SSE
14 mins	2025-07-02 08:05:00.265Z	8.048° NNE	2025-07-02 08:12:00.265Z	279.423° WNW	41.742°	2025-07-02 08:19:00.265Z	215.102° SW
6 mins	2025-07-02 10:00:00.265Z	332.124° NNW	2025-07-02 10:03:00.265Z	309.083° NW	13.7°	2025-07-02 10:06:00.265Z	287.008° WNW
12 mins	2025-07-02 17:10:00.265Z	116.414° SE	2025-07-02 17:16:00.265Z	58.351° ENE	29.439°	2025-07-02 17:22:00.265Z	3.064° NNE
13 mins	2025-07-02 19:02:00.265Z	187.662° SSW	2025-07-02 19:08:00.265Z	255.485° W	38.398°	2025-07-02 19:15:00.265Z	331.711° NNW

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

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