DELTA 1 DEB, 21443

Orbit data source: Space-Track

DELTA 1 DEB, 21443 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 src="https://www.satcat.com/sats-embedded/21443?theme=dark&initialShowStats=false" width="600" height="400" frameborder="0" title="Kayhan Space Satcat Satellite Viewer"></iframe>

Iframe URL

https://www.satcat.com/sats-embedded/21443?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

21443, 1975-052EB

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 (50 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: 10 hours ago

TLE from 10 hours ago

0 DELTA 1 DEB
1 21443U 75052EB  25316.31185052  .00000102  00000-0  29473-3 0  9996
2 21443  99.8012  91.8220 0068645 112.9040 277.4246 13.31680031677775

Epoch: 2025-11-12T07:29Z

TLE epoch observation values (Epoch: 2025-11-12T07:29:03.884Z)

Latitude

29.12139°

Longitude

-77.6243°

Altitude

1,137.594 km

Speed

7.29 km/s

True Right ascension

05h 45m 18s

True Declination

28° 58' 58"

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

13:45:38

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,189.357 km

Perigee altitude

1,086.171 km

Semi-major axis

7,515.901 km

Eccentricity

0.00686

Inclination

99.8012°

RAAN

91.822°

Arg. of periapsis

112.904°

True anomaly

276.64374°

Mean anomaly

277.4246°

Eccentric anomaly

277.03425°

Mean motion

3.33098 °/min

Orbital period

108.08 mins

BSTAR

0.00029473

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

DELTA 1 DEB, 21440 (Decayed)

DELTA 1 DEB, 42660 (Decayed)

DELTA 1 DEB, 21600 (Decayed)

DELTA 1 DEB, 21381 (Decayed)

DELTA 1 DEB, 21474 (Decayed)

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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.
8 mins	2025-11-12 20:35:45.304Z	52.039° ENE	2025-11-12 20:39:45.304Z	90.141° ESE	16.813°	2025-11-12 20:43:45.304Z	128.927° SE
11 mins	2025-11-12 22:21:45.304Z	9.689° NNE	2025-11-12 22:26:45.304Z	308.225° NW	43.703°	2025-11-12 22:32:45.304Z	205.54° SW
12 mins	2025-11-13 08:41:45.304Z	149.156° SSE	2025-11-13 08:47:45.304Z	51.621° ENE	42.089°	2025-11-13 08:53:45.304Z	351.351° N
8 mins	2025-11-13 10:30:45.304Z	229.793° WSW	2025-11-13 10:34:45.304Z	271.798° WNW	19.549°	2025-11-13 10:38:45.304Z	310.731° NW

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, 21443 on other resources

View DELTA 1 DEB, 21443 on Heavens-Above

View DELTA 1 DEB, 21443 on Keep Track

View DELTA 1 DEB, 21443 on Celestrak

View DELTA 1 DEB, 21443 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, 21443

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: 2025-11-12T07:29:03.884Z)

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, 21443 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 10 hours ago