DELTA 1 DEB, 21457

Orbit data source: Space-Track

DELTA 1 DEB, 21457 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/21457?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

21457, 1975-052ER

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

Medium (>0.1 m² and <1 m²)

Expand to show TLE details & history
Last TLE update: 18 hours ago

TLE from 18 hours ago

0 DELTA 1 DEB
1 21457U 75052ER  26182.27149062  .00001811  00000-0  24917-2 0  9994
2 21457  99.9588  95.4939 0285016 123.4704   3.9095 13.44429445704222

Epoch: 2026-07-01T06:30Z

TLE epoch observation values (Epoch: 2026-07-01T06:30:56.789Z)

Latitude

51.38356°

Longitude

-88.94297°

Altitude

888.539 km

Speed

7.518 km/s

True Right ascension

19h 12m 29s

True Declination

51° 13' 08"

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

12:00:33

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,303.001 km

Perigee altitude

877.286 km

Semi-major axis

7,468.28 km

Eccentricity

0.0285

Inclination

99.9588°

RAAN

95.4939°

Arg. of periapsis

123.4704°

True anomaly

4.14037°

Mean anomaly

3.9095°

Eccentric anomaly

4.0241°

Mean motion

3.36289 °/min

Orbital period

107.05 mins

BSTAR

0.0024917

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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.
5 mins	2026-07-02 05:45:46.932Z	65.593° ENE	2026-07-02 05:47:46.932Z	88.08° E	14.11°	2026-07-02 05:50:46.932Z	121.696° SE
10 mins	2026-07-02 07:29:46.932Z	7.821° NNE	2026-07-02 07:33:46.932Z	318.212° NNW	42.067°	2026-07-02 07:39:46.932Z	207.091° SW
10 mins	2026-07-02 17:44:46.932Z	146.629° SSE	2026-07-02 17:49:46.932Z	66.64° ENE	41.681°	2026-07-02 17:54:46.932Z	353.771° N
8 mins	2026-07-02 19:31:46.932Z	226.066° WSW	2026-07-02 19:35:46.932Z	268.119° W	19.253°	2026-07-02 19:39:46.932Z	309.679° 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, 21457 on other resources

View DELTA 1 DEB, 21457 on Heavens-Above

View DELTA 1 DEB, 21457 on Keep Track

View DELTA 1 DEB, 21457 on Celestrak

View DELTA 1 DEB, 21457 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, 21457

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 18 hours ago

TLE from 18 hours ago

TLE epoch observation values (Epoch: 2026-07-01T06:30:56.789Z)

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, 21457 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 18 hours ago