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)

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Last TLE update: 5 hours ago

TLE from 5 hours ago

0 ECHO 2 DEB (METAL OBJ)
1   743U 64004D   26035.19854020  .00000124  00000-0  23702-3 0  9997
2   743  81.5199 274.0763 0174451 324.8024 156.5692 13.26864239   483

Epoch: 2026-02-04T04:45Z

TLE epoch observation values (Epoch: 2026-02-04T04:45:53.873Z)

Latitude

56.95863°

Longitude

-124.95083°

Altitude

1,289.111 km

Speed

7.159 km/s

True Right ascension

05h 23m 34s

True Declination

56° 48' 44"

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

11:29:08

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,287.319 km

Perigee altitude

1,024.455 km

Semi-major axis

7,534.024 km

Eccentricity

0.01745

Inclination

81.5199°

RAAN

274.0763°

Arg. of periapsis

324.8024°

True anomaly

157.34848°

Mean anomaly

156.5692°

Eccentric anomaly

156.96038°

Mean motion

3.31896 °/min

Orbital period

108.47 mins

BSTAR

0.00023702

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

THOR AGENA B R/B, 741

ECHO 2 DEB (METAL OBJ), 742

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

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.
8 mins	2026-02-04 15:08:21.723Z	120.669° SE	2026-02-04 15:12:21.723Z	82.964° E	17.819°	2026-02-04 15:16:21.723Z	45.486° ENE
11 mins	2026-02-04 16:56:21.723Z	200.906° SSW	2026-02-04 17:01:21.723Z	293.647° NW	43.053°	2026-02-04 17:07:21.723Z	3.231° NNE
11 mins	2026-02-05 02:28:21.723Z	18.336° NNE	2026-02-05 02:33:21.723Z	70.788° E	28.178°	2026-02-05 02:39:21.723Z	128.068° SE
13 mins	2026-02-05 04:17:21.723Z	336.155° NNW	2026-02-05 04:23:21.723Z	262.671° W	37.661°	2026-02-05 04:30:21.723Z	196.657° SSW

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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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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: 5 hours ago

TLE from 5 hours ago

TLE epoch observation values (Epoch: 2026-02-04T04:45:53.873Z)

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: 5 hours ago