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.

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Iframe URL

https://www.satcat.com/sats-embedded/21542?theme=dark&initialShowStats=false

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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)

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Last TLE update: 21 hours ago

TLE from 21 hours ago

0 DELTA 1 DEB
1 21542U 75052GW  26064.60129017  .00000243  00000-0  54087-3 0  9993
2 21542 100.2940 304.7793 0049546 265.9979 127.7777 13.38505316699210

Epoch: 2026-03-05T14:25Z

TLE epoch observation values (Epoch: 2026-03-05T14:25:51.470Z)

Latitude

33.66138°

Longitude

-81.94586°

Altitude

1,141.974 km

Speed

7.274 km/s

True Right ascension

19h 51m 28s

True Declination

33° 30' 40"

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

15:04:13

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,149.312 km

Perigee altitude

1,075.088 km

Semi-major axis

7,490.337 km

Eccentricity

0.00495

Inclination

100.294°

RAAN

304.7793°

Arg. of periapsis

265.9979°

True anomaly

128.22475°

Mean anomaly

127.7777°

Eccentric anomaly

128.00139°

Mean motion

3.34804 °/min

Orbital period

107.53 mins

BSTAR

0.00054087

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

DELTA 1 DEB, 21369 (Decayed)

DELTA 1 DEB, 42660 (Decayed)

DELTA 1 DEB, 27574 (Decayed)

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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	2026-03-06 13:47:54.420Z	73.383° E	2026-03-06 13:49:54.420Z	55.651° ENE	12.854°	2026-03-06 13:52:54.420Z	28.961° NE
11 mins	2026-03-06 15:29:54.420Z	150.303° SSE	2026-03-06 15:34:54.420Z	77.117° E	43.297°	2026-03-06 15:40:54.420Z	350.183° N
8 mins	2026-03-06 17:17:54.420Z	231.331° WSW	2026-03-06 17:21:54.420Z	272.339° WNW	18.8°	2026-03-06 17:25:54.420Z	309.824° NW
12 mins	2026-03-07 04:32:54.420Z	25.22° NE	2026-03-07 04:37:54.420Z	88.274° E	41.504°	2026-03-07 04:44:54.420Z	183.586° SSW
8 mins	2026-03-07 06:19:54.420Z	341.318° N	2026-03-07 06:23:54.420Z	296.99° NW	22.743°	2026-03-07 06:27:54.420Z	255.642° W

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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, 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: 21 hours ago

TLE from 21 hours ago

TLE epoch observation values (Epoch: 2026-03-05T14:25:51.470Z)

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: 21 hours ago