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: 10 hours ago

TLE from 10 hours ago

0 ECHO 2 DEB (METAL OBJ)
1 00743U 64004D   25339.93723791  .00000158  00000-0  30177-3 0  9996
2 00743  81.5207 323.4089 0175300 113.5278 308.2065 13.26846597992501

Epoch: 2025-12-05T22:29Z

TLE epoch observation values (Epoch: 2025-12-05T22:29:37.355Z)

Latitude

59.1552°

Longitude

-74.58847°

Altitude

1,088.371 km

Speed

7.353 km/s

True Right ascension

22h 31m 09s

True Declination

59° 00' 37"

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

06:10:15

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,288.027 km

Perigee altitude

1,023.881 km

Semi-major axis

7,534.091 km

Eccentricity

0.01753

Inclination

81.5207°

RAAN

323.4089°

Arg. of periapsis

113.5278°

True anomaly

306.60655°

Mean anomaly

308.2065°

Eccentric anomaly

307.40869°

Mean motion

3.31892 °/min

Orbital period

108.47 mins

BSTAR

0.00030177

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

ECHO 2 DEB (METAL OBJ), 742

THOR AGENA B DEB, 749 (Decayed)

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

THOR AGENA B R/B, 741

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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.
10 mins	2025-12-06 09:38:15.208Z	17.69° NNE	2025-12-06 09:43:15.208Z	69.432° E	21.733°	2025-12-06 09:48:15.208Z	120.154° SE
11 mins	2025-12-06 11:28:15.208Z	336.927° NNW	2025-12-06 11:33:15.208Z	261.3° W	38.358°	2025-12-06 11:39:15.208Z	193.161° SSW
12 mins	2025-12-06 23:38:15.208Z	178.84° S	2025-12-06 23:44:15.208Z	65.429° ENE	43.804°	2025-12-06 23:50:15.208Z	12.65° NNE
7 mins	2025-12-07 01:31:15.208Z	266.004° W	2025-12-07 01:34:15.208Z	296.043° NW	16.921°	2025-12-07 01:38:15.208Z	333.666° NNW

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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: 10 hours ago

TLE from 10 hours ago

TLE epoch observation values (Epoch: 2025-12-05T22:29:37.355Z)

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: 10 hours ago