DELTA 1 DEB, 21285

Orbit data source: Space-Track

DELTA 1 DEB, 21285 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 src="https://www.satcat.com/sats-embedded/21285?theme=dark&initialShowStats=false" width="600" height="400" frameborder="0" title="Kayhan Space Satcat Satellite Viewer"></iframe>

Iframe URL

https://www.satcat.com/sats-embedded/21285?theme=dark&initialShowStats=false

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Identifier

21285, 1975-052W

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, 0.5 m

Radar Cross Section

Medium (>0.1 m² and <1 m²)

Expand to show TLE details & history
Last TLE update: 11 hours ago

TLE from 11 hours ago

0 DELTA 1 DEB
1 21285U 75052W   25351.20699153  .00000010  00000-0  94430-4 0  9993
2 21285  99.6541 204.7237 0020163  54.6626  56.7239 13.41259706694144

Epoch: 2025-12-17T04:58Z

TLE epoch observation values (Epoch: 2025-12-17T04:58:04.068Z)

Latitude

66.53696°

Longitude

-112.92463°

Altitude

1,107.757 km

Speed

7.309 km/s

True Right ascension

03h 10m 41s

True Declination

66° 25' 01"

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

14:51:39

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,116.983 km

Perigee altitude

1,086.819 km

Semi-major axis

7,480.038 km

Eccentricity

0.00202

Inclination

99.6541°

RAAN

204.7237°

Arg. of periapsis

54.6626°

True anomaly

56.91733°

Mean anomaly

56.7239°

Eccentric anomaly

56.82059°

Mean motion

3.35496 °/min

Orbital period

107.3 mins

BSTAR

0.00009443

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

DELTA 1 DEB, 21385 (Decayed)

DELTA 1 DEB, 21447 (Decayed)

DELTA 1 DEB, 37629 (Decayed)

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.
12 mins	2025-12-18 02:29:59.385Z	31.608° NE	2025-12-18 02:35:59.385Z	98.412° ESE	31.628°	2025-12-18 02:41:59.385Z	163.922° S
10 mins	2025-12-18 04:16:59.385Z	352.99° N	2025-12-18 04:21:59.385Z	288.901° WNW	31.269°	2025-12-18 04:26:59.385Z	233.206° WSW
8 mins	2025-12-18 12:48:59.385Z	96.058° ESE	2025-12-18 12:51:59.385Z	65.045° ENE	19.563°	2025-12-18 12:56:59.385Z	14.788° NNE
11 mins	2025-12-18 14:32:59.385Z	176.112° S	2025-12-18 14:37:59.385Z	278.569° WNW	43.09°	2025-12-18 14:43:59.385Z	340.503° N

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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, 21285 on other resources

View DELTA 1 DEB, 21285 on Heavens-Above

View DELTA 1 DEB, 21285 on Keep Track

View DELTA 1 DEB, 21285 on Celestrak

View DELTA 1 DEB, 21285 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, 21285

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 11 hours ago

TLE from 11 hours ago

TLE epoch observation values (Epoch: 2025-12-17T04:58:04.068Z)

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, 21285 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 11 hours ago