ECHO 2 DEB (METAL OBJ), 743

Orbit data source: Space-Track

ECHO 2 DEB (METAL OBJ), 743 is space debris in LEO originally from a launch on Sat, 25 Jan 1964 UTC launched from the Air Force Western Test Range (AFWTR). Debris objects in space refer to the collection of defunct objects orbiting the Earth. Examples of debris include non-operational satellites, rocket bodies, and fragments generated from explosions, collisions, or faulty payload assembly.

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Iframe URL

https://www.satcat.com/sats-embedded/743?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

743, 1964-004D

Orbit

LEO

Country

Related business

National Aeronautics and Space Administration (NASA) (US)

Manufacturer

Grummann

Mission

Spacecraft

Bus & Motor

ECHO CANISTER, Unknown motor

Mass

35 kg wet, 35 kg dry

Launch date (UTC)

1964-01-25 (62 years ago)

Launch vehicle

Unknown

Launch site

Air Force Western Test Range (AFWTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Unknown shape, 0.9 m

Radar Cross Section

Medium (>0.1 m² and <1 m²)

Expand to show TLE details & history
Last TLE update: 11 hours ago

TLE from 11 hours ago

0 ECHO 2 DEB (METAL OBJ)
1   743U 64004D   25295.21995218  .00000184  00000-0  36016-3 0  9990
2   743  81.5254   0.0190 0174010 224.0847 190.7307 13.26833139986572

Epoch: 2025-10-22T05:16Z

TLE epoch observation values (Epoch: 2025-10-22T05:16:43.868Z)

Latitude

53.67928°

Longitude

-98.42575°

Altitude

1,296.425 km

Speed

7.151 km/s

True Right ascension

00h 46m 36s

True Declination

53° 31' 36"

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

11:06:25

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,287.106 km

Perigee altitude

1,024.903 km

Semi-major axis

7,534.142 km

Eccentricity

0.0174

Inclination

81.5254°

RAAN

0.019°

Arg. of periapsis

224.0847°

True anomaly

190.36721°

Mean anomaly

190.7307°

Eccentric anomaly

190.54819°

Mean motion

3.31889 °/min

Orbital period

108.47 mins

BSTAR

0.00036016

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Other satellites on launch #4 in the year 1964 (1964-01-25 UTC)

ECHO 2 (A-12), 740 (Decayed)

ECHO 2 DEB (METAL OBJ), 742

THOR AGENA B R/B, 741

THOR AGENA B DEB, 749 (Decayed)

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ECHO 2 DEB (METAL OBJ) 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.
13 mins	2025-10-22 16:27:33.103Z	348.201° N	2025-10-22 16:34:33.103Z	254.764° W	44.386°	2025-10-22 16:40:33.103Z	179.406° S
13 mins	2025-10-23 04:37:33.103Z	163.736° S	2025-10-23 04:43:33.103Z	99.418° ESE	39.111°	2025-10-23 04:50:33.103Z	19.573° NNE
11 mins	2025-10-23 06:28:33.103Z	239.304° WSW	2025-10-23 06:33:33.103Z	288.572° WNW	26.654°	2025-10-23 06:39:33.103Z	345.73° N

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

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Check out ECHO 2 DEB (METAL OBJ), 743 on other resources

View ECHO 2 DEB (METAL OBJ), 743 on Heavens-Above

View ECHO 2 DEB (METAL OBJ), 743 on Keep Track

View ECHO 2 DEB (METAL OBJ), 743 on Celestrak

View ECHO 2 DEB (METAL OBJ), 743 on Gunter's Space Page

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

ECHO 2 DEB (METAL OBJ), 743

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 11 hours ago

TLE from 11 hours ago

TLE epoch observation values (Epoch: 2025-10-22T05:16:43.868Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #4 in the year 1964 (1964-01-25 UTC)

ECHO 2 DEB (METAL OBJ) Visibility forecast

Co-orbital & Co-planar RSOs

Check out ECHO 2 DEB (METAL OBJ), 743 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 11 hours ago