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: 20 hours ago

TLE from 20 hours ago

0 ECHO 2 DEB (METAL OBJ)
1 00743U 64004D   25309.56785192  .00000169  00000-0  32785-3 0  9994
2 00743  81.5231 348.2750 0174599 188.5378 325.0288 13.26837694988473

Epoch: 2025-11-05T13:37Z

TLE epoch observation values (Epoch: 2025-11-05T13:37:42.405Z)

Latitude

27.31365°

Longitude

-85.5819°

Altitude

1,054.879 km

Speed

7.379 km/s

True Right ascension

10h 55m 32s

True Declination

27° 10' 45"

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

05:27:30

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,287.533 km

Perigee altitude

1,024.443 km

Semi-major axis

7,534.125 km

Eccentricity

0.01746

Inclination

81.5231°

RAAN

348.275°

Arg. of periapsis

188.5378°

True anomaly

323.86125°

Mean anomaly

325.0288°

Eccentric anomaly

324.44713°

Mean motion

3.3189 °/min

Orbital period

108.47 mins

BSTAR

0.00032785

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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 R/B, 741

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	2025-11-06 12:59:34.199Z	23.149° NE	2025-11-06 13:03:34.199Z	60.53° ENE	18.009°	2025-11-06 13:07:34.199Z	101.918° ESE
12 mins	2025-11-06 14:48:34.199Z	344.597° N	2025-11-06 14:54:34.199Z	244.283° WSW	42.634°	2025-11-06 15:00:34.199Z	183.806° SSW
13 mins	2025-11-07 02:57:34.199Z	169.418° S	2025-11-07 03:03:34.199Z	111.109° ESE	40.943°	2025-11-07 03:10:34.199Z	17.597° NNE
10 mins	2025-11-07 04:49:34.199Z	247.255° WSW	2025-11-07 04:53:34.199Z	285.501° WNW	23.67°	2025-11-07 04:59:34.199Z	342.753° 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: 20 hours ago

TLE from 20 hours ago

TLE epoch observation values (Epoch: 2025-11-05T13:37:42.405Z)

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: 20 hours ago