DELTA 1 DEB, 21384

Orbit data source: Space-Track

DELTA 1 DEB, 21384 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/21384?theme=dark&initialShowStats=false

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Identifier

21384, 1975-052DE

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)

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Last TLE update: 2 days ago

TLE from 2 days ago

0 DELTA 1 DEB
1 21384U 75052DE  26171.03823556  .00000064  00000-0  30938-3 0  9992
2 21384  99.6283  17.1527 0293348 180.4940 335.4010 12.91329176651295

Epoch: 2026-06-20T00:55Z

TLE epoch observation values (Epoch: 2026-06-20T00:55:03.552Z)

Latitude

25.19748°

Longitude

-80.31613°

Altitude

1,095.592 km

Speed

7.403 km/s

True Right ascension

13h 26m 49s

True Declination

25° 04' 16"

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

09:15:53

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,518.676 km

Perigee altitude

1,068.577 km

Semi-major axis

7,671.763 km

Eccentricity

0.02933

Inclination

99.6283°

RAAN

17.1527°

Arg. of periapsis

180.494°

True anomaly

333.95368°

Mean anomaly

335.401°

Eccentric anomaly

334.68224°

Mean motion

3.22998 °/min

Orbital period

111.46 mins

BSTAR

0.00030938

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

DELTA 1 DEB, 35533 (Decayed)

DELTA 1 DEB, 21681 (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	2026-06-22 01:07:52.865Z	51.209° ENE	2026-06-22 01:11:52.865Z	88.567° E	16.598°	2026-06-22 01:15:52.865Z	127.589° SE
12 mins	2026-06-22 02:56:52.865Z	9.279° NNE	2026-06-22 03:02:52.865Z	269.878° W	43.366°	2026-06-22 03:08:52.865Z	205.932° SW
9 mins	2026-06-22 11:48:52.865Z	90.512° ESE	2026-06-22 11:52:52.865Z	57.395° ENE	19.505°	2026-06-22 11:57:52.865Z	16.289° NNE
14 mins	2026-06-22 13:34:52.865Z	162.7° S	2026-06-22 13:41:52.865Z	6.384° NNE	44.991°	2026-06-22 13:48:52.865Z	345.493° N
9 mins	2026-06-22 15:27:52.865Z	235.521° WSW	2026-06-22 15:31:52.865Z	266.074° W	17.463°	2026-06-22 15:36:52.865Z	306.081° NW

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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, 21384 on other resources

View DELTA 1 DEB, 21384 on Heavens-Above

View DELTA 1 DEB, 21384 on Keep Track

View DELTA 1 DEB, 21384 on Celestrak

View DELTA 1 DEB, 21384 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, 21384

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 2 days ago

TLE from 2 days ago

TLE epoch observation values (Epoch: 2026-06-20T00:55:03.552Z)

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, 21384 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 2 days ago