DELTA 1 DEB, 21284

Orbit data source: Space-Track

DELTA 1 DEB, 21284 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/21284?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/21284?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

21284, 1975-052V

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: 5 hours ago

TLE from 5 hours ago

0 DELTA 1 DEB
1 21284U 75052V   26305.20512269  .00000019  00000-0  12674-3 0  9992
2 21284  99.8235  17.7699 0076852  26.9980 355.8605 13.31392407723823

Epoch: 2026-11-01T04:55Z

TLE epoch observation values (Epoch: 2026-11-01T04:55:22.600Z)

Latitude

22.4586°

Longitude

-100.65746°

Altitude

1,086.459 km

Speed

7.339 km/s

True Right ascension

00h 54m 44s

True Declination

22° 20' 34"

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

05:46:49

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,196.618 km

Perigee altitude

1,081.079 km

Semi-major axis

7,516.985 km

Eccentricity

0.00769

Inclination

99.8235°

RAAN

17.7699°

Arg. of periapsis

26.998°

True anomaly

355.79631°

Mean anomaly

355.8605°

Eccentric anomaly

355.82847°

Mean motion

3.33026 °/min

Orbital period

108.1 mins

BSTAR

0.00012674

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

DELTA 1 DEB, 21539 (Decayed)

DELTA 1 DEB, 42658

DELTA 1 DEB, 21564 (Decayed)

DELTA 1 DEB, 21335 (Decayed)

DELTA 1 DEB, 42640

DELTA 1 DEB, 42629

DELTA 1 DEB, 21369 (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.
8 mins	2026-11-01 16:16:26.726Z	55.443° ENE	2026-11-01 16:20:26.726Z	91.583° ESE	16.259°	2026-11-01 16:24:26.726Z	126.75° SE
12 mins	2026-11-01 18:02:26.726Z	12.906° NNE	2026-11-01 18:07:26.726Z	312.583° NW	83.384°	2026-11-01 18:14:26.726Z	199.935° SSW
6 mins	2026-11-01 19:50:26.726Z	330.193° NNW	2026-11-01 19:53:26.726Z	301.729° NW	16.031°	2026-11-01 19:56:26.726Z	274.651° WNW
10 mins	2026-11-02 04:23:26.726Z	140.189° SSE	2026-11-02 04:27:26.726Z	85.138° E	56.025°	2026-11-02 04:33:26.726Z	355.347° N
8 mins	2026-11-02 06:11:26.726Z	227.781° WSW	2026-11-02 06:14:26.726Z	261.44° W	23.332°	2026-11-02 06:19:26.726Z	314.387° 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, 21284 on other resources

View DELTA 1 DEB, 21284 on Heavens-Above

View DELTA 1 DEB, 21284 on Keep Track

View DELTA 1 DEB, 21284 on Celestrak

View DELTA 1 DEB, 21284 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, 21284

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 5 hours ago

TLE from 5 hours ago

TLE epoch observation values (Epoch: 2026-11-01T04:55:22.600Z)

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, 21284 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 5 hours ago