Showing default

ESSA 4 (TOS-B), 2657

Orbit data source: Space-Track

ESSA 4 (TOS-B), 2657 is a payload satellite owned by ESSA (US) in SSO that was launched on Thu, 26 Jan 1967 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.

Loading next visibility...

Iframe embed code

<iframe src="https://www.satcat.com/sats-embedded/2657?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/2657?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

2657, 1967-006A

Orbit

SSO

Last TLE update

15 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

132 kg wet, 132 kg dry

Launch date (UTC)

1967-01-26 (58 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 15 hours ago

0 ESSA 4 (TOS-B)
1 02657U 67006A   25181.73717715 -.00000041  00000-0  42065-4 0  9991
2 02657 102.0847 357.8855 0072738 247.6736 123.6191 12.69883911707934

Epoch: 2025-06-30T17:41Z

TLE epoch observation values (Epoch: 2025-06-30T17:41:32.105Z)

Latitude

11.6748°

Longitude

170.93595°

Altitude

1,415.79 km

Speed

7.139 km/s

True Right ascension

23h 41m 26s

True Declination

11° 36' 45"

Sunlit

Object was in daylight at epoch

Visualization orbit readout

Latitude

-25.70167°

Longitude

179.99652°

Altitude

1,388.771 km

Speed

7.166 km/s

Apparent Right ascension

03h 09m 09s

Apparent Declination

-49° 47' 21"

Sunlit

Object is in daylight

Visualization observer readout

Local Sidereal Time

20:15:11

Azimuth

127.921° SE

Elevation

-37.268°

Doppler factor

Orbital elements

Apogee altitude

1,436.384 km

Perigee altitude

1,323.523 km

Semi-major axis

7,758.091 km

Eccentricity

0.00727

Inclination

102.0847°

RAAN

357.8855°

Arg. of periapsis

247.6736°

True anomaly

Unknown

Mean anomaly

123.6191°

Eccentric anomaly

Unknown

Mean motion

3.17622 °/min

Orbital period

113.34 mins

BSTAR

0.000042065

Loading maneuver chart data...

Loading SW <> Apogee altitude chart data...

Loading historical data...

Other satellites on launch #6 in the year 1967 (1967-01-26 UTC)

ESSA 4 (TOS-B) 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.
4 mins	2025-07-01 09:01:02.837Z	60.347° ENE	2025-07-01 09:03:02.837Z	45.812° ENE	11.578°	2025-07-01 09:05:02.837Z	31.012° NE
14 mins	2025-07-01 10:46:02.837Z	134.559° SE	2025-07-01 10:53:02.837Z	57.564° ENE	38.473°	2025-07-01 11:00:02.837Z	352.542° N
13 mins	2025-07-01 12:38:02.837Z	203.258° SW	2025-07-01 12:44:02.837Z	259.201° W	29.697°	2025-07-01 12:51:02.837Z	322.846° NNW
14 mins	2025-07-02 00:31:02.837Z	24.566° NE	2025-07-02 00:37:02.837Z	84.033° E	42.961°	2025-07-02 00:45:02.837Z	188.873° SSW
11 mins	2025-07-02 02:23:02.837Z	350.634° N	2025-07-02 02:28:02.837Z	305.225° NW	24.688°	2025-07-02 02:34:02.837Z	253.429° W

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 ascending order

Check out ESSA 4 (TOS-B), 2657 on other resources

View ESSA 4 (TOS-B), 2657 on NASA - NSSDCA Website

View ESSA 4 (TOS-B), 2657 on Heavens-Above

View ESSA 4 (TOS-B), 2657 on Keep Track

View ESSA 4 (TOS-B), 2657 on Celestrak

View ESSA 4 (TOS-B), 2657 on Gunter's Space Page

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