DELTA 1 DEB, 21453

Orbit data source: Space-Track

DELTA 1 DEB, 21453 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/21453?theme=dark&initialShowStats=false

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Identifier

21453, 1975-052EM

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: 21 hours ago

TLE from 21 hours ago

0 DELTA 1 DEB
1 21453U 75052EM  26190.67270101  .00000044  00000-0  18548-3 0  9993
2 21453  99.8687 340.3111 0119363  14.2102 356.9485 13.26944612701758

Epoch: 2026-07-09T16:08Z

TLE epoch observation values (Epoch: 2026-07-09T16:08:41.367Z)

Latitude

10.87226°

Longitude

168.62257°

Altitude

1,070.465 km

Speed

7.361 km/s

True Right ascension

22h 33m 37s

True Declination

10° 48' 41"

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

01:19:57

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,245.576 km

Perigee altitude

1,065.725 km

Semi-major axis

7,533.787 km

Eccentricity

0.01194

Inclination

99.8687°

RAAN

340.3111°

Arg. of periapsis

14.2102°

True anomaly

356.87459°

Mean anomaly

356.9485°

Eccentric anomaly

356.91165°

Mean motion

3.31912 °/min

Orbital period

108.46 mins

BSTAR

0.00018548

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

DELTA 1 DEB, 21507 (Decayed)

DELTA 1 DEB, 21544 (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.
11 mins	2026-07-10 21:39:32.382Z	41.635° NE	2026-07-10 21:45:32.382Z	100.281° ESE	23.3°	2026-07-10 21:50:32.382Z	145.825° SSE
12 mins	2026-07-10 23:26:32.382Z	5.037° NNE	2026-07-10 23:32:32.382Z	280.757° WNW	40.796°	2026-07-10 23:38:32.382Z	214.77° SW
5 mins	2026-07-11 08:06:32.382Z	76.144° E	2026-07-11 08:08:32.382Z	56.313° ENE	14.66°	2026-07-11 08:11:32.382Z	27.505° NE
11 mins	2026-07-11 09:49:32.382Z	160.992° S	2026-07-11 09:54:32.382Z	99.122° ESE	44.919°	2026-07-11 10:00:32.382Z	346.094° N
4 mins	2026-07-11 11:40:32.382Z	252.873° W	2026-07-11 11:42:32.382Z	272.53° WNW	13.498°	2026-07-11 11:44:32.382Z	291.75° WNW

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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, 21453 on other resources

View DELTA 1 DEB, 21453 on Heavens-Above

View DELTA 1 DEB, 21453 on Keep Track

View DELTA 1 DEB, 21453 on Celestrak

View DELTA 1 DEB, 21453 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, 21453

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 21 hours ago

TLE from 21 hours ago

TLE epoch observation values (Epoch: 2026-07-09T16:08:41.367Z)

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, 21453 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 21 hours ago