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: 13 hours ago

TLE from 13 hours ago

0 DELTA 1 DEB
1 21366U 75052CL  26182.42215602  .00000118  00000-0  27771-3 0  9995
2 21366  99.6488  38.9064 0020865 286.0463 197.4230 13.43830547719779

Epoch: 2026-07-01T10:07Z

TLE epoch observation values (Epoch: 2026-07-01T10:07:54.280Z)

Latitude

55.48904°

Longitude

161.69244°

Altitude

1,119.048 km

Speed

7.291 km/s

True Right ascension

15h 32m 35s

True Declination

55° 20' 10"

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

10:18:14

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,107.938 km

Perigee altitude

1,076.764 km

Semi-major axis

7,470.488 km

Eccentricity

0.00209

Inclination

99.6488°

RAAN

38.9064°

Arg. of periapsis

286.0463°

True anomaly

197.35159°

Mean anomaly

197.423°

Eccentric anomaly

197.38728°

Mean motion

3.3614 °/min

Orbital period

107.1 mins

BSTAR

0.00027771

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

DELTA 1 DEB, 21280

DELTA 1 DEB, 21345

DELTA 1 DEB, 21597 (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	2026-07-02 02:13:44.369Z	44.652° NE	2026-07-02 02:18:44.369Z	100.413° ESE	23.969°	2026-07-02 02:23:44.369Z	149.352° SSE
11 mins	2026-07-02 03:58:44.369Z	2.362° NNE	2026-07-02 04:03:44.369Z	305.046° NW	38.213°	2026-07-02 04:09:44.369Z	219.433° SW
5 mins	2026-07-02 12:31:44.369Z	77.222° E	2026-07-02 12:33:44.369Z	58.187° ENE	14.256°	2026-07-02 12:36:44.369Z	29.696° NE
11 mins	2026-07-02 14:13:44.369Z	158.246° S	2026-07-02 14:18:44.369Z	59.149° ENE	44.661°	2026-07-02 14:24:44.369Z	347.614° N
6 mins	2026-07-02 16:02:44.369Z	247.709° W	2026-07-02 16:04:44.369Z	267.635° W	15.324°	2026-07-02 16:08:44.369Z	305.09° 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, 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: 13 hours ago

TLE from 13 hours ago

TLE epoch observation values (Epoch: 2026-07-01T10:07:54.280Z)

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: 13 hours ago