DELTA 1 DEB, 21542

Orbit data source: Space-Track

DELTA 1 DEB, 21542 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/21542?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/21542?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

21542, 1975-052GW

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: 12 hours ago

TLE from 12 hours ago

0 DELTA 1 DEB
1 21542U 75052GW  26002.13655738  .00000346  00000-0  73225-3 0  9996
2 21542 100.2993 241.5328 0050477  53.4619  99.1200 13.38469520690856

Epoch: 2026-01-02T03:16Z

TLE epoch observation values (Epoch: 2026-01-02T03:16:38.557Z)

Latitude

26.4167°

Longitude

-84.25624°

Altitude

1,124.236 km

Speed

7.29 km/s

True Right ascension

04h 26m 44s

True Declination

26° 17' 12"

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

15:31:04

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,150.144 km

Perigee altitude

1,074.524 km

Semi-major axis

7,490.471 km

Eccentricity

0.00505

Inclination

100.2993°

RAAN

241.5328°

Arg. of periapsis

53.4619°

True anomaly

99.69053°

Mean anomaly

99.12°

Eccentric anomaly

99.40532°

Mean motion

3.34795 °/min

Orbital period

107.53 mins

BSTAR

0.00073225

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, 42660 (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.
9 mins	2026-01-02 16:59:22.550Z	221.066° SW	2026-01-02 17:03:22.550Z	263.834° W	21.441°	2026-01-02 17:08:22.550Z	315.262° NNW
11 mins	2026-01-03 04:15:22.550Z	32.921° NE	2026-01-03 04:20:22.550Z	114.65° SE	37.699°	2026-01-03 04:26:22.550Z	176.235° S
9 mins	2026-01-03 06:01:22.550Z	346.461° N	2026-01-03 06:05:22.550Z	300.649° NW	25.854°	2026-01-03 06:10:22.550Z	245.814° WSW
9 mins	2026-01-03 14:33:22.550Z	111.439° ESE	2026-01-03 14:37:22.550Z	63.194° ENE	26.562°	2026-01-03 14:42:22.550Z	7.661° NNE

Items per page:

1–4 of 4 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, 21542 on other resources

View DELTA 1 DEB, 21542 on Heavens-Above

View DELTA 1 DEB, 21542 on Keep Track

View DELTA 1 DEB, 21542 on Celestrak

View DELTA 1 DEB, 21542 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, 21542

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 12 hours ago

TLE from 12 hours ago

TLE epoch observation values (Epoch: 2026-01-02T03:16:38.557Z)

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, 21542 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 12 hours ago