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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ISO8601 Format

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)

Expand to show TLE details & history
Last TLE update: 22 hours ago

TLE from 22 hours ago

0 ATLAS AGENA D R/B
1 02144U 66031B   26111.81662540  .00000217  00000-0  67111-4 0  9990
2 02144  35.0421 293.1343 0008828 284.9555  75.0158 14.44922283154619

Epoch: 2026-04-21T19:35Z

TLE epoch observation values (Epoch: 2026-04-21T19:35:56.434Z)

Latitude

-0.00004°

Longitude

149.26213°

Altitude

739.611 km

Speed

7.488 km/s

True Right ascension

19h 32m 32s

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

01:08:39

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

751.702 km

Perigee altitude

739.125 km

Semi-major axis

7,123.55 km

Eccentricity

0.00088

Inclination

35.0421°

RAAN

293.1343°

Arg. of periapsis

284.9555°

True anomaly

75.11355°

Mean anomaly

75.0158°

Eccentric anomaly

75.06467°

Mean motion

3.60993 °/min

Orbital period

99.73 mins

BSTAR

0.000067111

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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.
9 mins	2026-04-22 19:12:53.196Z	260.074° W	2026-04-22 19:17:53.196Z	181.394° SSW	34.398°	2026-04-22 19:21:53.196Z	122.889° SE
6 mins	2026-04-22 20:59:53.196Z	242.477° WSW	2026-04-22 21:02:53.196Z	199.481° SSW	20.094°	2026-04-22 21:05:53.196Z	161.456° S
6 mins	2026-04-23 14:56:53.196Z	193.096° SSW	2026-04-23 14:58:53.196Z	164.322° S	21.479°	2026-04-23 15:02:53.196Z	108.732° ESE
8 mins	2026-04-23 16:40:53.196Z	235.083° WSW	2026-04-23 16:43:53.196Z	185.709° SSW	34.878°	2026-04-23 16:48:53.196Z	101.075° ESE

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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

Satcat and Kayhan Space are not affiliated with NASA, Celestrak, Heavens-Above, Keep Track, or Gunter's Space Page.

ATLAS AGENA D R/B, 2144

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 22 hours ago

TLE from 22 hours ago

TLE epoch observation values (Epoch: 2026-04-21T19:35:56.434Z)

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: 22 hours ago