DELTA 1 DEB, 21289

Orbit data source: Space-Track

DELTA 1 DEB, 21289 is space debris in SSO originally from a launch on Thu, 12 Jun 1975 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/21289?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

21289, 1975-052AA

Orbit

SSO

Country

Related business

National Aeronautics and Space Administration (NASA) (US)

Manufacturer

Unknown

Mission

Spacecraft

Bus & Motor

Unknown

Mass

Unknown

Launch date (UTC)

1975-06-12 (51 years ago)

Launch vehicle

Unknown

Launch site

Air Force Western Test Range (AFWTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Unknown shape, 0.1 m

Radar Cross Section

Small (<0.1 m²)

Expand to show TLE details & history
Last TLE update: 13 hours ago

TLE from 13 hours ago

0 DELTA 1 DEB
1 21289U 75052AA  26045.85730468  .00000162  00000-0  58558-3 0  9992
2 21289  99.8887  43.0407 0245524 285.8173 143.8025 13.00052778648652

Epoch: 2026-02-14T20:34Z

TLE epoch observation values (Epoch: 2026-02-14T20:34:31.124Z)

Latitude

68.95231°

Longitude

-77.25706°

Altitude

1,426.681 km

Speed

7.082 km/s

True Right ascension

01h 04m 59s

True Declination

68° 50' 48"

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

12:35:38

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,446.776 km

Perigee altitude

1,071.743 km

Semi-major axis

7,637.396 km

Eccentricity

0.02455

Inclination

99.8887°

RAAN

43.0407°

Arg. of periapsis

285.8173°

True anomaly

145.42366°

Mean anomaly

143.8025°

Eccentric anomaly

144.61706°

Mean motion

3.25181 °/min

Orbital period

110.71 mins

BSTAR

0.00058558

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Other satellites on launch #52 in the year 1975 (1975-06-12 UTC)

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DELTA 1 DEB 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.
14 mins	2026-02-15 11:36:25.380Z	31.131° NE	2026-02-15 11:43:25.380Z	90.717° ESE	31.388°	2026-02-15 11:50:25.380Z	159.175° S
14 mins	2026-02-15 13:26:25.380Z	0.988° NNE	2026-02-15 13:32:25.380Z	303.425° NW	36.878°	2026-02-15 13:40:25.380Z	223.209° SW
11 mins	2026-02-15 22:13:25.380Z	107.278° ESE	2026-02-15 22:18:25.380Z	57.272° ENE	26.277°	2026-02-15 22:24:25.380Z	5.931° NNE
14 mins	2026-02-16 00:00:25.380Z	180.851° SSW	2026-02-16 00:06:25.380Z	248.432° W	41.354°	2026-02-16 00:14:25.380Z	338.3° 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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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings

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Check out DELTA 1 DEB, 21289 on other resources

View DELTA 1 DEB, 21289 on Heavens-Above

View DELTA 1 DEB, 21289 on Keep Track

View DELTA 1 DEB, 21289 on Celestrak

View DELTA 1 DEB, 21289 on Gunter's Space Page

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

DELTA 1 DEB, 21289

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 13 hours ago

TLE from 13 hours ago

TLE epoch observation values (Epoch: 2026-02-14T20:34:31.124Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #52 in the year 1975 (1975-06-12 UTC)

DELTA 1 DEB Visibility forecast

Co-orbital & Co-planar RSOs

Check out DELTA 1 DEB, 21289 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 13 hours ago