DELTA 1 DEB, 21438

Orbit data source: Space-Track

DELTA 1 DEB, 21438 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/21438?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

21438, 1975-052DW

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, 0.070 m

Radar Cross Section

Medium (>0.1 m² and <1 m²)

Expand to show TLE details & history
Last TLE update: 5 hours ago

TLE from 5 hours ago

0 DELTA 1 DEB
1 21438U 75052DW  26305.21254294  .00000061  00000-0  21245-3 0  9996
2 21438  99.7191 212.3911 0080854 310.4102 204.6758 13.31080446722475

Epoch: 2026-11-01T05:06Z

TLE epoch observation values (Epoch: 2026-11-01T05:06:03.710Z)

Latitude

24.93699°

Longitude

-80.08687°

Altitude

1,200.924 km

Speed

7.229 km/s

True Right ascension

02h 27m 44s

True Declination

24° 48' 48"

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

05:47:55

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,200.805 km

Perigee altitude

1,079.231 km

Semi-major axis

7,518.155 km

Eccentricity

0.00809

Inclination

99.7191°

RAAN

212.3911°

Arg. of periapsis

310.4102°

True anomaly

204.29252°

Mean anomaly

204.6758°

Eccentric anomaly

204.48381°

Mean motion

3.32948 °/min

Orbital period

108.13 mins

BSTAR

0.00021245

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

DELTA 1 DEB, 21539 (Decayed)

DELTA 1 DEB, 42658

DELTA 1 DEB, 21564 (Decayed)

DELTA 1 DEB, 21335 (Decayed)

DELTA 1 DEB, 42640

DELTA 1 DEB, 42629

DELTA 1 DEB, 21369 (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.
12 mins	2026-11-01 17:03:32.876Z	135.656° SSE	2026-11-01 17:09:32.876Z	74.337° E	44.169°	2026-11-01 17:15:32.876Z	0.463° NNE
10 mins	2026-11-01 18:52:32.876Z	213.432° SW	2026-11-01 18:56:32.876Z	263.64° W	33.019°	2026-11-01 19:02:32.876Z	325.585° NNW
12 mins	2026-11-02 06:11:32.876Z	30.789° NE	2026-11-02 06:17:32.876Z	105.048° ESE	45.991°	2026-11-02 06:23:32.876Z	169.28° S
11 mins	2026-11-02 07:58:32.876Z	352.344° N	2026-11-02 08:03:32.876Z	297.951° NW	34.885°	2026-11-02 08:09:32.876Z	236.232° WSW

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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, 21438 on other resources

View DELTA 1 DEB, 21438 on Heavens-Above

View DELTA 1 DEB, 21438 on Keep Track

View DELTA 1 DEB, 21438 on Celestrak

View DELTA 1 DEB, 21438 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, 21438

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 5 hours ago

TLE from 5 hours ago

TLE epoch observation values (Epoch: 2026-11-01T05:06:03.710Z)

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, 21438 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 5 hours ago