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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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, 0.1 m

Radar Cross Section

Small (<0.1 m²)

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Last TLE update: 1 day ago

TLE from 1 day ago

0 DELTA 1 DEB
1 21438U 75052DW  26064.73593745  .00000284  00000-0  67297-3 0  9996
2 21438  99.7282 345.2939 0079630 165.5590 253.1785 13.31006108690489

Epoch: 2026-03-05T17:39Z

TLE epoch observation values (Epoch: 2026-03-05T17:39:44.995Z)

Latitude

56.67367°

Longitude

-98.16048°

Altitude

1,170.123 km

Speed

7.265 km/s

True Right ascension

22h 01m 02s

True Declination

56° 31' 27"

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

22:59:13

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,200.168 km

Perigee altitude

1,080.429 km

Semi-major axis

7,518.436 km

Eccentricity

0.00796

Inclination

99.7282°

RAAN

345.2939°

Arg. of periapsis

165.559°

True anomaly

252.30759°

Mean anomaly

253.1785°

Eccentric anomaly

252.74279°

Mean motion

3.32929 °/min

Orbital period

108.13 mins

BSTAR

0.00067297

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

DELTA 1 DEB, 21369 (Decayed)

DELTA 1 DEB, 37629 (Decayed)

DELTA 1 DEB, 21451 (Decayed)

DELTA 1 DEB, 21447 (Decayed)

DELTA 1 DEB, 42660 (Decayed)

DELTA 1 DEB, 21295

DELTA 1 DEB, 26826

DELTA 1 DEB, 21330

DELTA 1 DEB, 27574 (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.
7 mins	2026-03-07 06:06:36.029Z	58.86° ENE	2026-03-07 06:09:36.029Z	89.902° E	17.758°	2026-03-07 06:13:36.029Z	130.141° SE
11 mins	2026-03-07 07:51:36.029Z	8.256° NNE	2026-03-07 07:56:36.029Z	308.375° NW	42.906°	2026-03-07 08:02:36.029Z	207.941° SW
4 mins	2026-03-07 16:30:36.029Z	65.633° ENE	2026-03-07 16:31:36.029Z	56.68° ENE	12.659°	2026-03-07 16:34:36.029Z	30.314° NE
12 mins	2026-03-07 18:11:36.029Z	151.578° SSE	2026-03-07 18:17:36.029Z	59.139° ENE	43.166°	2026-03-07 18:23:36.029Z	350.789° 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, 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: 1 day ago

TLE from 1 day ago

TLE epoch observation values (Epoch: 2026-03-05T17:39:44.995Z)

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: 1 day ago