DELTA 1 DEB, 21383

Orbit data source: Space-Track

DELTA 1 DEB, 21383 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/21383?theme=dark&initialShowStats=false

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Identifier

21383, 1975-052DD

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: 3 days ago

TLE from 3 days ago

0 DELTA 1 DEB
1 21383U 75052DD  26076.71669581 -.00000034  00000-0  33031-5 0  9993
2 21383  99.7138 343.9233 0363635 191.9441 196.3435 12.73185775616806

Epoch: 2026-03-17T17:12Z

TLE epoch observation values (Epoch: 2026-03-17T17:12:02.517Z)

Latitude

26.77647°

Longitude

-94.30977°

Altitude

1,643.204 km

Speed

6.928 km/s

True Right ascension

22h 35m 57s

True Declination

26° 39' 13"

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

11:48:22

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,648.008 km

Perigee altitude

1,084.772 km

Semi-major axis

7,744.527 km

Eccentricity

0.03636

Inclination

99.7138°

RAAN

343.9233°

Arg. of periapsis

191.9441°

True anomaly

195.22009°

Mean anomaly

196.3435°

Eccentric anomaly

195.77702°

Mean motion

3.18457 °/min

Orbital period

113.05 mins

BSTAR

0.0000033031

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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.
11 mins	2026-03-20 07:54:32.084Z	354.53° N	2026-03-20 08:00:32.084Z	296.896° NW	26.023°	2026-03-20 08:05:32.084Z	245.306° WSW
4 mins	2026-03-20 15:06:32.084Z	58.285° ENE	2026-03-20 15:07:32.084Z	51.424° ENE	11.765°	2026-03-20 15:10:32.084Z	30.662° NE
15 mins	2026-03-20 16:50:32.084Z	136.364° SSE	2026-03-20 16:57:32.084Z	66.674° ENE	38.965°	2026-03-20 17:05:32.084Z	354.957° N
15 mins	2026-03-20 18:41:32.084Z	202.358° SSW	2026-03-20 18:48:32.084Z	259.13° W	31.482°	2026-03-20 18:56:32.084Z	327.913° NNW
12 mins	2026-03-21 06:34:32.084Z	17.368° NNE	2026-03-21 06:39:32.084Z	52.508° ENE	44.391°	2026-03-21 06:46:32.084Z	193.054° 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, 21383 on other resources

View DELTA 1 DEB, 21383 on Heavens-Above

View DELTA 1 DEB, 21383 on Keep Track

View DELTA 1 DEB, 21383 on Celestrak

View DELTA 1 DEB, 21383 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, 21383

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 3 days ago

TLE from 3 days ago

TLE epoch observation values (Epoch: 2026-03-17T17:12:02.517Z)

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, 21383 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 3 days ago