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: 14 hours ago

TLE from 14 hours ago

0 DELTA 1 DEB
1 21289U 75052AA  25353.98174942  .00000083  00000-0  34938-3 0  9994
2 21289  99.8747 351.3418 0247368  54.4273   2.6215 12.99983598641266

Epoch: 2025-12-19T23:33Z

TLE epoch observation values (Epoch: 2025-12-19T23:33:43.149Z)

Latitude

55.98666°

Longitude

-105.77227°

Altitude

1,082.541 km

Speed

7.406 km/s

True Right ascension

22h 25m 53s

True Declination

55° 50' 02"

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

12:41:06

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,448.461 km

Perigee altitude

1,070.598 km

Semi-major axis

7,637.667 km

Eccentricity

0.02474

Inclination

99.8747°

RAAN

351.3418°

Arg. of periapsis

54.4273°

True anomaly

2.75528°

Mean anomaly

2.6215°

Eccentric anomaly

2.68797°

Mean motion

3.25164 °/min

Orbital period

110.71 mins

BSTAR

0.00034938

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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.
9 mins	2025-12-20 14:37:59.111Z	343.602° N	2025-12-20 14:42:59.111Z	296.365° NW	19.35°	2025-12-20 14:46:59.111Z	261.239° W
11 mins	2025-12-20 23:24:59.111Z	143.542° SSE	2025-12-20 23:29:59.111Z	71.189° E	40.403°	2025-12-20 23:35:59.111Z	353.711° N
8 mins	2025-12-21 01:15:59.111Z	227.559° WSW	2025-12-21 01:19:59.111Z	271.864° WNW	20.025°	2025-12-21 01:23:59.111Z	312.228° NW
5 mins	2025-12-21 11:02:59.111Z	73.102° E	2025-12-21 11:04:59.111Z	89.985° E	12.525°	2025-12-21 11:07:59.111Z	113.922° SE
13 mins	2025-12-21 12:48:59.111Z	18.363° NNE	2025-12-21 12:54:59.111Z	124.572° SE	44.519°	2025-12-21 13:01:59.111Z	192.013° SSW

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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: 14 hours ago

TLE from 14 hours ago

TLE epoch observation values (Epoch: 2025-12-19T23:33:43.149Z)

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: 14 hours ago