DELTA 1 DEB, 21366

Orbit data source: Space-Track

DELTA 1 DEB, 21366 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/21366?theme=dark&initialShowStats=false

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Identifier

21366, 1975-052CL

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, 0.2 m

Radar Cross Section

Medium (>0.1 m² and <1 m²)

Expand to show TLE details & history
Last TLE update: 16 hours ago

TLE from 16 hours ago

0 DELTA 1 DEB
1 21366U 75052CL  25349.87279367  .00000175  00000-0  37709-3 0  9991
2 21366  99.6704 209.4008 0022289  49.4703 323.1726 13.43748788693249

Epoch: 2025-12-15T20:56Z

TLE epoch observation values (Epoch: 2025-12-15T20:56:49.373Z)

Latitude

12.27044°

Longitude

168.31692°

Altitude

1,084.049 km

Speed

7.318 km/s

True Right ascension

13h 49m 09s

True Declination

12° 12' 08"

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

11:40:00

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,109.307 km

Perigee altitude

1,076.004 km

Semi-major axis

7,470.792 km

Eccentricity

0.00223

Inclination

99.6704°

RAAN

209.4008°

Arg. of periapsis

49.4703°

True anomaly

323.01916°

Mean anomaly

323.1726°

Eccentric anomaly

323.09592°

Mean motion

3.36119 °/min

Orbital period

107.1 mins

BSTAR

0.00037709

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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, 26838

DELTA 1 DEB, 21431 (Decayed)

DELTA 1 DEB, 7965 (Decayed)

DELTA 1 DEB, 21539 (Decayed)

DELTA 1 DEB, 21683 (Decayed)

DELTA 1 DEB, 21679 (Decayed)

DELTA 1 DEB, 21517 (Decayed)

DELTA 1 DEB, 21389 (Decayed)

DELTA 1 DEB, 21505 (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	2025-12-16 13:08:47.448Z	94.094° ESE	2025-12-16 13:11:47.448Z	63.881° ENE	18.217°	2025-12-16 13:15:47.448Z	22.155° NNE
11 mins	2025-12-16 14:51:47.448Z	171.361° S	2025-12-16 14:56:47.448Z	223.421° SW	43.799°	2025-12-16 15:02:47.448Z	341.049° N
6 mins	2025-12-17 02:07:47.448Z	61.37° ENE	2025-12-17 02:10:47.448Z	90.171° ESE	14.898°	2025-12-17 02:13:47.448Z	118.902° SE
11 mins	2025-12-17 03:51:47.448Z	12.558° NNE	2025-12-17 03:56:47.448Z	332.445° NNW	44.561°	2025-12-17 04:02:47.448Z	200.394° SSW
5 mins	2025-12-17 05:39:47.448Z	323.794° NNW	2025-12-17 05:41:47.448Z	304.1° NW	14.427°	2025-12-17 05:44:47.448Z	276.017° WNW

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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, 21366 on other resources

View DELTA 1 DEB, 21366 on Heavens-Above

View DELTA 1 DEB, 21366 on Keep Track

View DELTA 1 DEB, 21366 on Celestrak

View DELTA 1 DEB, 21366 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, 21366

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 16 hours ago

TLE from 16 hours ago

TLE epoch observation values (Epoch: 2025-12-15T20:56:49.373Z)

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, 21366 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 16 hours ago