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 src="https://www.satcat.com/sats-embedded/21545?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/21545?theme=dark&initialShowStats=false

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ISO8601 Format

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

Medium (>0.1 m² and <1 m²)

Expand to show TLE details & history
Last TLE update: 1 day ago

TLE from 1 day ago

0 DELTA 1 DEB
1 21545U 75052GZ  26241.63672583  .00000178  00000-0  45971-3 0  9996
2 21545  99.6994  16.2515 0229756 261.5457 110.6324 13.22312361702590

Epoch: 2026-08-29T15:16Z

TLE epoch observation values (Epoch: 2026-08-29T15:16:53.111Z)

Latitude

14.37643°

Longitude

166.68806°

Altitude

1,242.55 km

Speed

7.204 km/s

True Right ascension

00h 55m 00s

True Declination

14° 17' 57"

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

07:32:30

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,346.734 km

Perigee altitude

999.74 km

Semi-major axis

7,551.374 km

Eccentricity

0.02298

Inclination

99.6994°

RAAN

16.2515°

Arg. of periapsis

261.5457°

True anomaly

113.07091°

Mean anomaly

110.6324°

Eccentric anomaly

111.8542°

Mean motion

3.30753 °/min

Orbital period

108.84 mins

BSTAR

0.00045971

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

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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.
12 mins	2026-08-30 20:53:33.543Z	34.066° NE	2026-08-30 20:59:33.543Z	87.566° E	28.118°	2026-08-30 21:05:33.543Z	152.203° SSE
12 mins	2026-08-30 22:41:33.543Z	1.125° NNE	2026-08-30 22:47:33.543Z	291.343° WNW	37.47°	2026-08-30 22:53:33.543Z	223.204° SW
9 mins	2026-08-31 07:20:33.543Z	93.811° ESE	2026-08-31 07:24:33.543Z	55.676° ENE	21.48°	2026-08-31 07:29:33.543Z	12.929° NNE
14 mins	2026-08-31 09:04:33.543Z	169.753° S	2026-08-31 09:10:33.543Z	232.929° WSW	44.398°	2026-08-31 09:18:33.543Z	342.981° N
5 mins	2026-08-31 10:57:33.543Z	259.999° W	2026-08-31 10:59:33.543Z	276.724° WNW	13.315°	2026-08-31 11:02:33.543Z	300.138° NW

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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: 1 day ago

TLE from 1 day ago

TLE epoch observation values (Epoch: 2026-08-29T15:16:53.111Z)

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: 1 day ago