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 (63 years ago)

Launch vehicle

Unknown

Launch site

Air Force Western Test Range (AFWTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

DOME, 0.9 m

Radar Cross Section

Large (>1 m²)

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Last TLE update: 5 hours ago

TLE from 5 hours ago

0 ECHO 2 DEB (METAL OBJ)
1 00743U 64004D   26251.59397913  .00000106  00000-0  19547-3 0  9996
2 00743  81.5179  96.9311 0174199 148.3470 268.1801 13.26894678 29184

Epoch: 2026-09-08T14:15Z

TLE epoch observation values (Epoch: 2026-09-08T14:15:19.796Z)

Latitude

53.75891°

Longitude

-92.88084°

Altitude

1,173.709 km

Speed

7.269 km/s

True Right ascension

07h 14m 26s

True Declination

53° 36' 14"

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

11:36:41

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,287.012 km

Perigee altitude

1,024.532 km

Semi-major axis

7,533.909 km

Eccentricity

0.01742

Inclination

81.5179°

RAAN

96.9311°

Arg. of periapsis

148.347°

True anomaly

266.18671°

Mean anomaly

268.1801°

Eccentric anomaly

267.18322°

Mean motion

3.31904 °/min

Orbital period

108.47 mins

BSTAR

0.00019547

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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

THOR AGENA B DEB, 749 (Decayed)

ECHO 2 (A-12), 740 (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.
12 mins	2026-09-09 01:25:41.274Z	355.541° N	2026-09-09 01:31:41.274Z	68.926° E	71.571°	2026-09-09 01:37:41.274Z	163.556° S
5 mins	2026-09-09 03:18:41.274Z	297.017° NW	2026-09-09 03:20:41.274Z	276.063° WNW	15.865°	2026-09-09 03:23:41.274Z	246.642° WSW
12 mins	2026-09-09 13:36:41.274Z	148.77° SSE	2026-09-09 13:42:41.274Z	83.637° E	36.659°	2026-09-09 13:48:41.274Z	26.107° NE
11 mins	2026-09-09 15:26:41.274Z	225.835° WSW	2026-09-09 15:31:41.274Z	284.014° WNW	39.744°	2026-09-09 15:37:41.274Z	351.291° N

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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: 5 hours ago

TLE from 5 hours ago

TLE epoch observation values (Epoch: 2026-09-08T14:15:19.796Z)

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