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.

Loading next visibility...

Iframe embed code

<iframe src="https://www.satcat.com/sats-embedded/21290?theme=dark&initialShowStats=false" width="600" height="400" frameborder="0" title="Kayhan Space Satcat Satellite Viewer"></iframe>

Iframe URL

https://www.satcat.com/sats-embedded/21290?theme=dark&initialShowStats=false

Optional Secondary NORAD IDs

Max 10 NORAD IDs; Separated by commas

Initial load time (optional)

ISO8601 Format

TLE date request (optional)

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 (50 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 21290U 75052AB  25316.32106668  .00000084  00000-0  53602-3 0  9993
2 21290  99.5480 257.3649 0511510 257.9487 262.1506 12.43323902565885

Epoch: 2025-11-12T07:42Z

TLE epoch observation values (Epoch: 2025-11-12T07:42:20.161Z)

Latitude

25.29401°

Longitude

-85.37702°

Altitude

1,570.341 km

Speed

7.051 km/s

True Right ascension

05h 27m 36s

True Declination

25° 10' 30"

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

17:39:42

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,892.434 km

Perigee altitude

1,087.511 km

Semi-major axis

7,868.11 km

Eccentricity

0.05115

Inclination

99.548°

RAAN

257.3649°

Arg. of periapsis

257.9487°

True anomaly

256.40397°

Mean anomaly

262.1506°

Eccentric anomaly

259.2711°

Mean motion

3.10984 °/min

Orbital period

115.76 mins

BSTAR

0.00053602

Loading maneuver chart data...

Computing Atmospheric mass density...

Loading historical data...

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

DELTA 1 DEB, 21440 (Decayed)

DELTA 1 DEB, 21675 (Decayed)

DELTA 1 DEB, 21321 (Decayed)

DELTA 1 DEB, 21543 (Decayed)

DELTA 1 DEB, 21474 (Decayed)

DELTA 1 DEB, 37629 (Decayed)

DELTA 1 DEB, 21517 (Decayed)

DELTA 1 DEB, 21375 (Decayed)

DELTA 1 DEB, 21337 (Decayed)

DELTA 1 DEB, 21343 (Decayed)

DELTA 1 DEB, 21455 (Decayed)

DELTA 1 DEB, 21676 (Decayed)

DELTA 1 DEB, 21274 (Decayed)

DELTA 1 DEB, 21334 (Decayed)

DELTA 1 DEB, 21323 (Decayed)

Did you know?

You can import UDL-sourced sensor .json files into the Sandbox to generate a visibility chart that accounts for multi-vendor sensor geometry.

Click here to try in Sandbox

DELTA 1 DEB Visibility forecast

Loading observer location...
Set Observer location

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.
16 mins	2025-11-13 21:32:15.026Z	215.156° SW	2025-11-13 21:39:15.026Z	267.778° W	27.237°	2025-11-13 21:48:15.026Z	327.712° NNW
14 mins	2025-11-14 07:48:15.026Z	37.694° NE	2025-11-14 07:55:15.026Z	95.528° ESE	28.573°	2025-11-14 08:02:15.026Z	151.959° SSE
16 mins	2025-11-14 09:41:15.026Z	5.988° NNE	2025-11-14 09:49:15.026Z	294.632° NW	40.931°	2025-11-14 09:57:15.026Z	216.899° SW
8 mins	2025-11-14 11:37:15.026Z	338.625° N	2025-11-14 11:41:15.026Z	312.873° NW	14.71°	2025-11-14 11:45:15.026Z	286.583° WNW
17 mins	2025-11-14 18:48:15.026Z	124.607° SE	2025-11-14 18:57:15.026Z	54.886° ENE	33.215°	2025-11-14 19:05:15.026Z	359.686° N
18 mins	2025-11-14 20:42:15.026Z	186.95° SSW	2025-11-14 20:50:15.026Z	263.062° W	40.116°	2025-11-14 21:00:15.026Z	338.241° N

Co-orbital & Co-planar RSOs

Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions

Please sign-in to view Co-orbital & Co-planar RSOs.

Click to sort rows by RSO header in ascending order	Click to sort rows by Country header in ascending order	Click to sort rows by Type header in ascending order	Click to sort rows by Inclination Δ header in ascending order	Click to sort rows by RAAN Δ header in ascending order	Click to sort rows by Coplanar Angle header in ascending order	Click to sort rows by SMA Δ header in ascending order	Click to sort rows by Orbital period header in ascending order	Click to sort rows by <5km Md TCA header in ascending order

CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings

Authenticating...

Click to sort rows by Secondary header in ascending order	Click to sort rows by Secondary name header in ascending order	Click to sort rows by Country header in ascending order	Click to sort rows by Owner header in ascending order	Click to sort rows by Obj. Type header in ascending order	Click to sort rows by Miss dist. header in ascending order	Click to sort rows by Rel. speed header in ascending order	Click to sort rows by Apr. angle header in ascending order	Click to sort rows by TCA header in ascending order

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: 2 days ago

TLE from 2 days ago

TLE epoch observation values (Epoch: 2025-11-12T07:42:20.161Z)

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: 2 days ago