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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ISO8601 Format

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

Medium (>0.1 m² and <1 m²)

Expand to show TLE details & history
Last TLE update: 6 hours ago

TLE from 6 hours ago

0 DELTA 1 DEB
1 21383U 75052DD  26182.64114968  .00000064  00000-0  37265-3 0  9990
2 21383  99.7034  74.1825 0364009 322.4779  62.8611 12.73215487630287

Epoch: 2026-07-01T15:23Z

TLE epoch observation values (Epoch: 2026-07-01T15:23:15.332Z)

Latitude

28.71538°

Longitude

-81.67429°

Altitude

1,251.909 km

Speed

7.288 km/s

True Right ascension

04h 35m 20s

True Declination

28° 34' 48"

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

08:39:33

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,648.172 km

Perigee altitude

1,084.366 km

Semi-major axis

7,744.406 km

Eccentricity

0.0364

Inclination

99.7034°

RAAN

74.1825°

Arg. of periapsis

322.4779°

True anomaly

66.64894°

Mean anomaly

62.8611°

Eccentric anomaly

64.74741°

Mean motion

3.18464 °/min

Orbital period

113.04 mins

BSTAR

0.00037265

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

DELTA 1 DEB, 21597 (Decayed)

DELTA 1 DEB, 21503 (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.
17 mins	2026-07-02 05:03:19.671Z	24.056° NE	2026-07-02 05:11:19.671Z	91.248° ESE	39.796°	2026-07-02 05:20:19.671Z	176.297° S
14 mins	2026-07-02 06:56:19.671Z	353.679° N	2026-07-02 07:02:19.671Z	300.916° NW	31.925°	2026-07-02 07:10:19.671Z	236.439° WSW
13 mins	2026-07-02 15:53:19.671Z	130.924° SE	2026-07-02 15:58:19.671Z	74.437° E	36.154°	2026-07-02 16:06:19.671Z	355.798° N
12 mins	2026-07-02 17:45:19.671Z	210.467° SW	2026-07-02 17:50:19.671Z	266.515° W	29.385°	2026-07-02 17:57:19.671Z	328.465° NNW

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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: 6 hours ago

TLE from 6 hours ago

TLE epoch observation values (Epoch: 2026-07-01T15:23:15.332Z)

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: 6 hours ago