DELTA 1 DEB, 21686

Orbit data source: Space-Track

DELTA 1 DEB, 21686 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/21686?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

21686, 1975-052JN

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: 22 hours ago

TLE from 22 hours ago

0 DELTA 1 DEB
1 21686U 75052JN  26241.85541719  .00005130  00000-0  20537-2 0  9995
2 21686  99.9936 276.4734 0139522  98.5611 263.1401 14.23669692765301

Epoch: 2026-08-29T20:31Z

TLE epoch observation values (Epoch: 2026-08-29T20:31:48.045Z)

Latitude

0.00002°

Longitude

-9.53616°

Altitude

829.208 km

Speed

7.431 km/s

True Right ascension

18h 25m 53s

True Declination

0° 00' 00"

Sunlit

Object was in partial 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

09:50:21

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

910.481 km

Perigee altitude

709.895 km

Semi-major axis

7,188.325 km

Eccentricity

0.01395

Inclination

99.9936°

RAAN

276.4734°

Arg. of periapsis

98.5611°

True anomaly

261.55624°

Mean anomaly

263.1401°

Eccentric anomaly

262.34782°

Mean motion

3.56124 °/min

Orbital period

101.09 mins

BSTAR

0.0020537

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

DELTA 1 DEB, 21563 (Decayed)

DELTA 1 DEB, 21679 (Decayed)

DELTA 1 DEB, 21515

DELTA 1 DEB, 21275

DELTA 1 DEB, 21278

DELTA 1 DEB, 21503 (Decayed)

DELTA 1 DEB, 21494 (Decayed)

DELTA 1 DEB, 26836

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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	2026-08-31 01:21:01.504Z	116.772° SE	2026-08-31 01:25:01.504Z	55.969° ENE	23.684°	2026-08-31 01:28:01.504Z	13.788° NNE
7 mins	2026-08-31 03:01:01.504Z	204.779° SW	2026-08-31 03:04:01.504Z	255.251° W	29.16°	2026-08-31 03:08:01.504Z	321.359° NNW
8 mins	2026-08-31 15:17:01.504Z	21.566° NNE	2026-08-31 15:20:01.504Z	70.142° E	43.496°	2026-08-31 15:25:01.504Z	190.024° SSW

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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, 21686 on other resources

View DELTA 1 DEB, 21686 on Heavens-Above

View DELTA 1 DEB, 21686 on Keep Track

View DELTA 1 DEB, 21686 on Celestrak

View DELTA 1 DEB, 21686 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, 21686

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 22 hours ago

TLE from 22 hours ago

TLE epoch observation values (Epoch: 2026-08-29T20:31:48.045Z)

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, 21686 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 22 hours ago