DELTA 1 DEB, 21450

Orbit data source: Space-Track

DELTA 1 DEB, 21450 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/21450?theme=dark&initialShowStats=false

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Identifier

21450, 1975-052EJ

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, 0.1 m

Radar Cross Section

Small (<0.1 m²)

Expand to show TLE details & history
Last TLE update: 2 days ago

TLE from 2 days ago

0 DELTA 1 DEB
1 21450U 75052EJ  25365.20575191  .00000219  00000-0  51265-3 0  9996
2 21450  99.8682 252.3264 0058916 297.8866 214.8034 13.35323238686998

Epoch: 2025-12-31T04:56Z

TLE epoch observation values (Epoch: 2025-12-31T04:56:16.965Z)

Latitude

27.28758°

Longitude

-96.49999°

Altitude

1,166.352 km

Speed

7.255 km/s

True Right ascension

05h 09m 47s

True Declination

27° 09' 19"

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

15:22:42

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,168.281 km

Perigee altitude

1,079.881 km

Semi-major axis

7,502.218 km

Eccentricity

0.00589

Inclination

99.8682°

RAAN

252.3264°

Arg. of periapsis

297.8866°

True anomaly

214.42038°

Mean anomaly

214.8034°

Eccentric anomaly

214.61166°

Mean motion

3.34009 °/min

Orbital period

107.78 mins

BSTAR

0.00051265

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

DELTA 1 DEB, 42660 (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	2026-01-02 15:38:02.699Z	130.151° SE	2026-01-02 15:44:02.699Z	65.093° ENE	32.438°	2026-01-02 15:50:02.699Z	0.731° NNE
10 mins	2026-01-02 17:26:02.699Z	206.879° SW	2026-01-02 17:30:02.699Z	258.755° W	31.351°	2026-01-02 17:36:02.699Z	326.668° NNW
11 mins	2026-01-03 04:44:02.699Z	39.523° NE	2026-01-03 04:49:02.699Z	102.873° ESE	31.243°	2026-01-03 04:55:02.699Z	163.25° S
11 mins	2026-01-03 06:30:02.699Z	354.73° N	2026-01-03 06:35:02.699Z	292.788° NW	33.085°	2026-01-03 06:41:02.699Z	229.066° WSW
8 mins	2026-01-03 15:04:02.699Z	96.669° ESE	2026-01-03 15:08:02.699Z	53.972° ENE	20.854°	2026-01-03 15:12:02.699Z	15.469° NNE

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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, 21450 on other resources

View DELTA 1 DEB, 21450 on Heavens-Above

View DELTA 1 DEB, 21450 on Keep Track

View DELTA 1 DEB, 21450 on Celestrak

View DELTA 1 DEB, 21450 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, 21450

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 2 days ago

TLE from 2 days ago

TLE epoch observation values (Epoch: 2025-12-31T04:56:16.965Z)

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, 21450 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 2 days ago