DELTA 1 DEB, 21288

Orbit data source: Space-Track

DELTA 1 DEB, 21288 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/21288?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/21288?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

21288, 1975-052Z

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, 0.3 m

Radar Cross Section

Medium (>0.1 m² and <1 m²)

Expand to show TLE details & history
Last TLE update: 4 hours ago

TLE from 4 hours ago

0 DELTA 1 DEB
1 21288U 75052Z   26079.29469428  .00000207  00000-0  86554-3 0  9998
2 21288  99.6853  21.3841 0357443  19.5918 133.5159 12.75767832623692

Epoch: 2026-03-20T07:04Z

TLE epoch observation values (Epoch: 2026-03-20T07:04:21.585Z)

Latitude

23.66882°

Longitude

-78.26824°

Altitude

1,556.662 km

Speed

7.001 km/s

True Right ascension

13h 42m 36s

True Declination

23° 33' 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

16:02:10

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,632.378 km

Perigee altitude

1,079.48 km

Semi-major axis

7,734.066 km

Eccentricity

0.03574

Inclination

99.6853°

RAAN

21.3841°

Arg. of periapsis

19.5918°

True anomaly

136.39628°

Mean anomaly

133.5159°

Eccentric anomaly

134.96494°

Mean motion

3.19103 °/min

Orbital period

112.82 mins

BSTAR

0.00086554

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, 21390 (Decayed)

DELTA 1 DEB, 21337 (Decayed)

DELTA 1 DEB, 21343 (Decayed)

DELTA 1 DEB, 21346 (Decayed)

DELTA 1 DEB, 21375 (Decayed)

DELTA 1 DEB, 21676 (Decayed)

DELTA 1 DEB, 21675 (Decayed)

DELTA 1 DEB, 21569 (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.
11 mins	2026-03-20 19:34:38.656Z	146.549° SSE	2026-03-20 19:39:38.656Z	62.002° ENE	41.79°	2026-03-20 19:45:38.656Z	352.276° N
7 mins	2026-03-20 21:28:38.656Z	239.9° WSW	2026-03-20 21:31:38.656Z	273.07° WNW	18.196°	2026-03-20 21:35:38.656Z	311.307° NW
11 mins	2026-03-21 07:23:38.656Z	54.119° ENE	2026-03-21 07:27:38.656Z	88.063° E	21.28°	2026-03-21 07:34:38.656Z	140.665° SSE
16 mins	2026-03-21 09:12:38.656Z	10.978° NNE	2026-03-21 09:19:38.656Z	291.771° WNW	44.315°	2026-03-21 09:28:38.656Z	203.914° SW
4 mins	2026-03-21 11:06:38.656Z	330.389° NNW	2026-03-21 11:09:38.656Z	305.683° NW	16.774°	2026-03-21 11:10:38.656Z	297.203° NW

Items per page:

1–5 of 5 items

of 1 page

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 descending 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 descending order

Check out DELTA 1 DEB, 21288 on other resources

View DELTA 1 DEB, 21288 on Heavens-Above

View DELTA 1 DEB, 21288 on Keep Track

View DELTA 1 DEB, 21288 on Celestrak

View DELTA 1 DEB, 21288 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, 21288

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 4 hours ago

TLE from 4 hours ago

TLE epoch observation values (Epoch: 2026-03-20T07:04:21.585Z)

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, 21288 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 4 hours ago