ATLAS AGENA D R/B, 2144

Orbit data source: Space-Track

ATLAS AGENA D R/B, 2144 is space debris in LEO originally from a launch on Fri, 08 Apr 1966 UTC launched from the Air Force Eastern Test Range (AFETR). 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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https://www.satcat.com/sats-embedded/2144?theme=dark&initialShowStats=false

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Identifier

2144, 1966-031B

Orbit

LEO

Country

Related business

National Aeronautics and Space Administration (NASA) (US)

Manufacturer

LMSC

Mission

Spacecraft

Bus & Motor

AGENA D, Unknown motor

Mass

769 kg wet, 769 kg dry

Launch date (UTC)

1966-04-08 (60 years ago)

Launch vehicle

Unknown

Launch site

Air Force Eastern Test Range (AFETR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Unknown

Radar Cross Section

Large (>1 m²)

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Last TLE update: 3 hours ago

TLE from 3 hours ago

0 ATLAS AGENA D R/B
1 02144U 66031B   26120.66166390  .00000326  00000-0  97828-4 0  9994
2 02144  35.0415 243.9689 0008246 351.7754   8.2801 14.44928297155891

Epoch: 2026-04-30T15:52Z

TLE epoch observation values (Epoch: 2026-04-30T15:52:47.760Z)

Latitude

-0.00002°

Longitude

147.16482°

Altitude

735.402 km

Speed

7.492 km/s

True Right ascension

16h 15m 52s

True Declination

0° 00' 00"

Sunlit

Object was in full shadow 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

02:40:20

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

751.268 km

Perigee altitude

739.52 km

Semi-major axis

7,123.531 km

Eccentricity

0.00082

Inclination

35.0415°

RAAN

243.9689°

Arg. of periapsis

351.7754°

True anomaly

8.29372°

Mean anomaly

8.2801°

Eccentric anomaly

8.28691°

Mean motion

3.60994 °/min

Orbital period

99.72 mins

BSTAR

0.000097828

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Other satellites on launch #31 in the year 1966 (1966-04-08 UTC)

OAO 1, 2142

ATLAS AGENA D DEB, 2145 (Decayed)

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ATLAS AGENA D R/B 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	2026-05-01 12:00:51.768Z	215.354° SW	2026-05-01 12:04:51.768Z	156.038° SSE	26.436°	2026-05-01 12:08:51.768Z	102.324° ESE
8 mins	2026-05-01 13:45:51.768Z	244.762° WSW	2026-05-01 13:49:51.768Z	169.95° S	36.957°	2026-05-01 13:53:51.768Z	105.311° ESE
7 mins	2026-05-01 15:31:51.768Z	250.339° W	2026-05-01 15:34:51.768Z	192.02° SSW	33.702°	2026-05-01 15:38:51.768Z	126.647° SE
5 mins	2026-05-01 17:17:51.768Z	233.552° WSW	2026-05-01 17:19:51.768Z	204.736° SW	18.751°	2026-05-01 17:22:51.768Z	166.342° S

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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 ATLAS AGENA D R/B, 2144 on other resources

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View ATLAS AGENA D R/B, 2144 on Keep Track

View ATLAS AGENA D R/B, 2144 on Celestrak

View ATLAS AGENA D R/B, 2144 on Gunter's Space Page

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ATLAS AGENA D R/B, 2144

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 3 hours ago

TLE from 3 hours ago

TLE epoch observation values (Epoch: 2026-04-30T15:52:47.760Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #31 in the year 1966 (1966-04-08 UTC)

ATLAS AGENA D R/B Visibility forecast

Co-orbital & Co-planar RSOs

Check out ATLAS AGENA D R/B, 2144 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 3 hours ago