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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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 (61 years ago)

Launch vehicle

Unknown

Launch site

Air Force Eastern Test Range (AFETR)

Object type

Payload

Rocket body

Debris

Shape & HBR

CYL, 1.1 m

Radar Cross Section

Large (>1 m²)

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Last TLE update: 10 hours ago

TLE from 10 hours ago

0 ATLAS AGENA D R/B
1 02144U 66031B   26311.23744044  .00000324  00000-0  97084-4 0  9999
2 02144  35.0416 264.5664 0007453  77.2012 282.9511 14.45022663183477

Epoch: 2026-11-07T05:41Z

TLE epoch observation values (Epoch: 2026-11-07T05:41:54.854Z)

Latitude

-0.00002°

Longitude

132.64224°

Altitude

739.715 km

Speed

7.488 km/s

True Right ascension

17h 38m 15s

True Declination

0° 00' 00"

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

11:37:24

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

750.393 km

Perigee altitude

739.775 km

Semi-major axis

7,123.221 km

Eccentricity

0.00075

Inclination

35.0416°

RAAN

264.5664°

Arg. of periapsis

77.2012°

True anomaly

282.86785°

Mean anomaly

282.9511°

Eccentric anomaly

282.90948°

Mean motion

3.61018 °/min

Orbital period

99.72 mins

BSTAR

0.000097084

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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.
7 mins	2026-11-08 00:08:28.936Z	198.534° SSW	2026-11-08 00:11:28.936Z	161.691° S	20.516°	2026-11-08 00:15:28.936Z	109.146° ESE
8 mins	2026-11-08 01:53:28.936Z	231.13° WSW	2026-11-08 01:56:28.936Z	180.413° SSW	42.378°	2026-11-08 02:01:28.936Z	99.732° ESE
8 mins	2026-11-08 03:38:28.936Z	252.335° W	2026-11-08 03:42:28.936Z	166.334° S	47.332°	2026-11-08 03:46:28.936Z	113.154° SE
7 mins	2026-11-08 05:24:28.936Z	243.583° WSW	2026-11-08 05:27:28.936Z	190.711° SSW	28.703°	2026-11-08 05:31:28.936Z	141.656° SSE

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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 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: 10 hours ago

TLE from 10 hours ago

TLE epoch observation values (Epoch: 2026-11-07T05:41:54.854Z)

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: 10 hours ago