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

Radar Cross Section

1.000 m², Medium (>0.1 m² and < 1m²)

Expand to show TLE details & history
Last TLE update: 15 hours ago

TLE from 15 hours ago

0 ECHO 2 DEB (METAL OBJ)
1 00743U 64004D   25242.23381694  .00000125  00000-0  23853-3 0  9991
2 00743  81.5207  43.3860 0173719 355.9841 177.6430 13.26823586979542

Epoch: 2025-08-30T05:36Z

TLE epoch observation values (Epoch: 2025-08-30T05:36:41.783Z)

Latitude

6.14899°

Longitude

159.62517°

Altitude

1,291.822 km

Speed

7.148 km/s

True Right ascension

14h 49m 52s

True Declination

6° 06' 54"

Sunlit

Object was in daylight 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

12:25:01

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,286.924 km

Perigee altitude

1,025.158 km

Semi-major axis

7,534.178 km

Eccentricity

0.01737

Inclination

81.5207°

RAAN

43.386°

Arg. of periapsis

355.9841°

True anomaly

177.72313°

Mean anomaly

177.643°

Eccentric anomaly

177.68324°

Mean motion

3.31886 °/min

Orbital period

108.47 mins

BSTAR

0.00023853

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

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

THOR AGENA B R/B, 741

ECHO 2 DEB (METAL OBJ), 742

THOR AGENA B DEB, 749 (Decayed)

ECHO 2 DEB (METAL OBJ) Visibility forecast

Observer location: undefined°, undefined°
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.
13 mins	2025-08-30 21:36:18.853Z	10.112° NNE	2025-08-30 21:42:18.853Z	68.878° E	30.133°	2025-08-30 21:49:18.853Z	135.561° SSE
13 mins	2025-08-30 23:26:18.853Z	334.263° NNW	2025-08-30 23:32:18.853Z	265.952° W	35.136°	2025-08-30 23:39:18.853Z	200.811° SSW
4 mins	2025-08-31 09:52:18.853Z	92.466° ESE	2025-08-31 09:53:18.853Z	82.888° E	12.929°	2025-08-31 09:56:18.853Z	55.417° ENE
11 mins	2025-08-31 11:37:18.853Z	189.788° SSW	2025-08-31 11:42:18.853Z	331.407° NNW	44.79°	2025-08-31 11:48:18.853Z	7.929° NNE
4 mins	2025-08-31 13:31:18.853Z	285.241° WNW	2025-08-31 13:32:18.853Z	294.683° NW	12.826°	2025-08-31 13:35:18.853Z	322.176° NNW

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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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: 15 hours ago

TLE from 15 hours ago

TLE epoch observation values (Epoch: 2025-08-30T05:36:41.783Z)

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: 15 hours ago