DELTA 1 DEB, 21290

Orbit data source: Space-Track

DELTA 1 DEB, 21290 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/21290?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

21290, 1975-052AB

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: 1 week ago

TLE from 1 week ago

0 DELTA 1 DEB
1 21290U 75052AB  25358.77839197  .00000157  00000-0  84791-3 0  9992
2 21290  99.5549 291.1393 0511577 169.9364 220.5958 12.43334532571160

Epoch: 2025-12-24T18:40Z

TLE epoch observation values (Epoch: 2025-12-24T18:40:53.066Z)

Latitude

26.52543°

Longitude

-87.42167°

Altitude

1,809.531 km

Speed

6.84 km/s

True Right ascension

19h 05m 22s

True Declination

26° 24' 21"

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

11:25:47

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,892.44 km

Perigee altitude

1,087.416 km

Semi-major axis

7,868.065 km

Eccentricity

0.05116

Inclination

99.5549°

RAAN

291.1393°

Arg. of periapsis

169.9364°

True anomaly

216.96051°

Mean anomaly

220.5958°

Eccentric anomaly

218.76072°

Mean motion

3.10986 °/min

Orbital period

115.76 mins

BSTAR

0.00084791

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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.
7 mins	2026-01-02 17:07:45.883Z	77.161° E	2026-01-02 17:11:45.883Z	49.268° ENE	13.941°	2026-01-02 17:14:45.883Z	27.317° NE
16 mins	2026-01-02 18:55:45.883Z	147.434° SSE	2026-01-02 19:03:45.883Z	77.918° E	42.27°	2026-01-02 19:11:45.883Z	352.314° N
13 mins	2026-01-02 20:51:45.883Z	215.032° SW	2026-01-02 20:57:45.883Z	260.447° W	26.305°	2026-01-02 21:04:45.883Z	319.454° NNW
7 mins	2026-01-03 07:06:45.883Z	58.643° ENE	2026-01-03 07:09:45.883Z	91.811° ESE	19.285°	2026-01-03 07:13:45.883Z	133.524° SE
10 mins	2026-01-03 08:59:45.883Z	1.716° NNE	2026-01-03 09:04:45.883Z	277.403° WNW	39.775°	2026-01-03 09:09:45.883Z	216.165° SW

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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, 21290 on other resources

View DELTA 1 DEB, 21290 on Heavens-Above

View DELTA 1 DEB, 21290 on Keep Track

View DELTA 1 DEB, 21290 on Celestrak

View DELTA 1 DEB, 21290 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, 21290

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 1 week ago

TLE from 1 week ago

TLE epoch observation values (Epoch: 2025-12-24T18:40:53.066Z)

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, 21290 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 1 week ago