DELTA 1 DEB, 21363

Orbit data source: Space-Track

DELTA 1 DEB, 21363 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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https://www.satcat.com/sats-embedded/21363?theme=dark&initialShowStats=false

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Identifier

21363, 1975-052CH

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, 0.3 m

Radar Cross Section

Small (<0.1 m²)

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Last TLE update: 19 hours ago

TLE from 19 hours ago

0 DELTA 1 DEB
1 21363U 75052CH  25346.28673309  .00000278  00000-0  84532-3 0  9994
2 21363  99.7386 274.1946 0175085 346.6266 134.4779 13.10256822651974

Epoch: 2025-12-12T06:52Z

TLE epoch observation values (Epoch: 2025-12-12T06:52:53.738Z)

Latitude

56.30648°

Longitude

-75.41954°

Altitude

1,325.871 km

Speed

7.155 km/s

True Right ascension

07h 16m 08s

True Declination

56° 09' 33"

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

00:30:55

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,352.545 km

Perigee altitude

1,086.498 km

Semi-major axis

7,597.658 km

Eccentricity

0.01751

Inclination

99.7386°

RAAN

274.1946°

Arg. of periapsis

346.6266°

True anomaly

135.88768°

Mean anomaly

134.4779°

Eccentric anomaly

135.18495°

Mean motion

3.27736 °/min

Orbital period

109.84 mins

BSTAR

0.00084532

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

DELTA 1 DEB, 21474 (Decayed)

DELTA 1 DEB, 21522 (Decayed)

DELTA 1 DEB, 42658

DELTA 1 DEB, 21542

DELTA 1 DEB, 21274 (Decayed)

DELTA 1 DEB, 21518 (Decayed)

DELTA 1 DEB, 21440 (Decayed)

DELTA 1 DEB, 21681 (Decayed)

DELTA 1 DEB, 21346 (Decayed)

DELTA 1 DEB, 21456 (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.
10 mins	2025-12-13 06:43:19.272Z	46.955° ENE	2025-12-13 06:48:19.272Z	88.966° E	19.932°	2025-12-13 06:53:19.272Z	132.456° SE
13 mins	2025-12-13 08:31:19.272Z	10.444° NNE	2025-12-13 08:37:19.272Z	292.838° NW	44.233°	2025-12-13 08:44:19.272Z	204.616° SW
7 mins	2025-12-13 10:21:19.272Z	332.462° NNW	2025-12-13 10:24:19.272Z	307.128° NW	15.859°	2025-12-13 10:28:19.272Z	274.676° WNW
5 mins	2025-12-13 17:18:19.272Z	68.813° E	2025-12-13 17:20:19.272Z	50.3° ENE	13.581°	2025-12-13 17:23:19.272Z	24.619° NE
11 mins	2025-12-13 19:02:19.272Z	154.052° SSE	2025-12-13 19:07:19.272Z	54.765° ENE	44.027°	2025-12-13 19:13:19.272Z	349.096° N
7 mins	2025-12-13 20:53:19.272Z	241.943° WSW	2025-12-13 20:56:19.272Z	272.089° WNW	16.743°	2025-12-13 21:00:19.272Z	308.458° 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, 21363 on other resources

View DELTA 1 DEB, 21363 on Heavens-Above

View DELTA 1 DEB, 21363 on Keep Track

View DELTA 1 DEB, 21363 on Celestrak

View DELTA 1 DEB, 21363 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, 21363

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 19 hours ago

TLE from 19 hours ago

TLE epoch observation values (Epoch: 2025-12-12T06:52:53.738Z)

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, 21363 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 19 hours ago