DELTA 1 DEB, 21329

Orbit data source: Space-Track

DELTA 1 DEB, 21329 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/21329?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/21329?theme=dark&initialShowStats=false

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Identifier

21329, 1975-052AX

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

Small (<0.1 m²)

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Last TLE update: 12 hours ago

TLE from 12 hours ago

0 DELTA 1 DEB
1 21329U 75052AX  26124.69708833  .00018394  00000-0  38508-2 0  9996
2 21329  99.6645 168.5043 0112172 136.0696 347.3253 14.55901609762259

Epoch: 2026-05-04T16:43Z

TLE epoch observation values (Epoch: 2026-05-04T16:43:48.431Z)

Latitude

55.76812°

Longitude

-110.61627°

Altitude

638.159 km

Speed

7.586 km/s

True Right ascension

00h 11m 40s

True Declination

55° 36' 19"

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

12:32:34

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

783.035 km

Perigee altitude

624.16 km

Semi-major axis

7,081.735 km

Eccentricity

0.01122

Inclination

99.6645°

RAAN

168.5043°

Arg. of periapsis

136.0696°

True anomaly

347.03936°

Mean anomaly

347.3253°

Eccentric anomaly

347.18272°

Mean motion

3.64195 °/min

Orbital period

98.85 mins

BSTAR

0.0038508

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

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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	2026-05-05 15:49:44.821Z	16.879° NNE	2026-05-05 15:53:44.821Z	120.464° SE	44.704°	2026-05-05 15:57:44.821Z	192.842° SSW
8 mins	2026-05-06 02:55:44.821Z	170.393° S	2026-05-06 02:59:44.821Z	289.271° WNW	43.924°	2026-05-06 03:03:44.821Z	341.6° 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, 21329 on other resources

View DELTA 1 DEB, 21329 on Heavens-Above

View DELTA 1 DEB, 21329 on Keep Track

View DELTA 1 DEB, 21329 on Celestrak

View DELTA 1 DEB, 21329 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, 21329

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 12 hours ago

TLE from 12 hours ago

TLE epoch observation values (Epoch: 2026-05-04T16:43:48.431Z)

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, 21329 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 12 hours ago