DELTA 1 DEB, 21545

Orbit data source: Space-Track

DELTA 1 DEB, 21545 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/21545?theme=dark&initialShowStats=false

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Identifier

21545, 1975-052GZ

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: 13 hours ago

TLE from 13 hours ago

0 DELTA 1 DEB
1 21545U 75052GZ  26078.65638134  .00000147  00000-0  39439-3 0  9998
2 21545  99.6741 225.1179 0229449 287.3362  86.6816 13.22250071681051

Epoch: 2026-03-19T15:45Z

TLE epoch observation values (Epoch: 2026-03-19T15:45:11.347Z)

Latitude

16.38722°

Longitude

168.75911°

Altitude

1,172.185 km

Speed

7.271 km/s

True Right ascension

14h 49m 02s

True Declination

16° 17' 58"

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

10:04:03

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,346.744 km

Perigee altitude

1,000.202 km

Semi-major axis

7,551.61 km

Eccentricity

0.02294

Inclination

99.6741°

RAAN

225.1179°

Arg. of periapsis

287.3362°

True anomaly

89.30993°

Mean anomaly

86.6816°

Eccentric anomaly

87.99544°

Mean motion

3.30738 °/min

Orbital period

108.85 mins

BSTAR

0.00039439

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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, 42655

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.
11 mins	2026-03-20 08:09:30.228Z	111.277° ESE	2026-03-20 08:15:30.228Z	54.802° ENE	23.981°	2026-03-20 08:20:30.228Z	10.068° NNE
12 mins	2026-03-20 09:56:30.228Z	180.2° SSW	2026-03-20 10:01:30.228Z	245.554° WSW	42.103°	2026-03-20 10:08:30.228Z	338.35° N
11 mins	2026-03-20 21:22:30.228Z	43.191° NE	2026-03-20 21:27:30.228Z	90.743° ESE	25.626°	2026-03-20 21:33:30.228Z	147.734° SSE
13 mins	2026-03-20 23:09:30.228Z	3.586° NNE	2026-03-20 23:15:30.228Z	285.093° WNW	40.606°	2026-03-20 23:22:30.228Z	214.827° SW
4 mins	2026-03-21 00:59:30.228Z	321.975° NNW	2026-03-21 01:00:30.228Z	314.13° NW	12.153°	2026-03-21 01:03:30.228Z	290.792° WNW

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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, 21545 on other resources

View DELTA 1 DEB, 21545 on Heavens-Above

View DELTA 1 DEB, 21545 on Keep Track

View DELTA 1 DEB, 21545 on Celestrak

View DELTA 1 DEB, 21545 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, 21545

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 13 hours ago

TLE from 13 hours ago

TLE epoch observation values (Epoch: 2026-03-19T15:45:11.347Z)

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, 21545 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 13 hours ago