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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ISO8601 Format

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: 17 hours ago

TLE from 17 hours ago

0 DELTA 1 DEB
1 21453U 75052EM  26241.96733581  .00000179  00000-0  47844-3 0  9998
2 21453  99.8758  29.1311 0119098 251.6942 233.9500 13.26963237708556

Epoch: 2026-08-29T23:12Z

TLE epoch observation values (Epoch: 2026-08-29T23:12:57.813Z)

Latitude

54.33114°

Longitude

-103.31437°

Altitude

1,220.604 km

Speed

7.223 km/s

True Right ascension

14h 52m 23s

True Declination

54° 10' 41"

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

07:32:48

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,245.305 km

Perigee altitude

1,065.855 km

Semi-major axis

7,533.717 km

Eccentricity

0.01191

Inclination

99.8758°

RAAN

29.1311°

Arg. of periapsis

251.6942°

True anomaly

232.85624°

Mean anomaly

233.95°

Eccentric anomaly

233.40216°

Mean motion

3.31917 °/min

Orbital period

108.46 mins

BSTAR

0.00047844

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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.
4 mins	2026-08-30 20:58:50.953Z	67.843° E	2026-08-30 21:00:50.953Z	84.801° E	12°	2026-08-30 21:02:50.953Z	102.241° ESE
13 mins	2026-08-30 22:42:50.953Z	17.924° NNE	2026-08-30 22:48:50.953Z	80.975° E	44.464°	2026-08-30 22:55:50.953Z	191.853° SSW
8 mins	2026-08-31 00:31:50.953Z	335.438° NNW	2026-08-31 00:34:50.953Z	306.056° NW	19.358°	2026-08-31 00:39:50.953Z	259.877° W
11 mins	2026-08-31 09:05:50.953Z	133.126° SE	2026-08-31 09:10:50.953Z	65.86° ENE	37.589°	2026-08-31 09:16:50.953Z	357.849° N
11 mins	2026-08-31 10:52:50.953Z	210.683° SW	2026-08-31 10:57:50.953Z	264.679° W	27.868°	2026-08-31 11:03:50.953Z	323.511° NNW

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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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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: 17 hours ago

TLE from 17 hours ago

TLE epoch observation values (Epoch: 2026-08-29T23:12:57.813Z)

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: 17 hours ago