DELTA 1 DEB, 21548

Orbit data source: Space-Track

DELTA 1 DEB, 21548 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/21548?theme=dark&initialShowStats=false

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Identifier

21548, 1975-052HC

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, 0.2 m

Radar Cross Section

Medium (>0.1 m² and <1 m²)

Expand to show TLE details & history
Last TLE update: 2 days ago

TLE from 2 days ago

0 DELTA 1 DEB
1 21548U 75052HC  26171.45980250  .00000197  00000-0  72256-3 0  9991
2 21548  99.8102 251.6120 0246237  22.2719 349.4064 12.95770662659886

Epoch: 2026-06-20T11:02Z

TLE epoch observation values (Epoch: 2026-06-20T11:02:06.936Z)

Latitude

10.93284°

Longitude

175.50478°

Altitude

1,095.468 km

Speed

7.393 km/s

True Right ascension

16h 38m 49s

True Declination

10° 52' 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

18:53:40

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,464.559 km

Perigee altitude

1,087.608 km

Semi-major axis

7,654.221 km

Eccentricity

0.02462

Inclination

99.8102°

RAAN

251.612°

Arg. of periapsis

22.2719°

True anomaly

348.8715°

Mean anomaly

349.4064°

Eccentric anomaly

349.1406°

Mean motion

3.24109 °/min

Orbital period

111.07 mins

BSTAR

0.00072256

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

DELTA 1 DEB, 21684 (Decayed)

DELTA 1 DEB, 21370

DELTA 1 DEB, 21456 (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.
14 mins	2026-06-22 17:19:04.827Z	31.758° NE	2026-06-22 17:26:04.827Z	100.389° ESE	32.424°	2026-06-22 17:33:04.827Z	163.209° S
12 mins	2026-06-22 19:10:04.827Z	355.459° N	2026-06-22 19:15:04.827Z	298.257° NW	35.351°	2026-06-22 19:22:04.827Z	227.386° WSW
9 mins	2026-06-23 04:00:04.827Z	105.17° ESE	2026-06-23 04:04:04.827Z	56.659° ENE	24.725°	2026-06-23 04:09:04.827Z	7.625° NNE
11 mins	2026-06-23 05:48:04.827Z	190.046° SSW	2026-06-23 05:53:04.827Z	265.406° W	37.746°	2026-06-23 05:59:04.827Z	334.014° NNW

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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, 21548 on other resources

View DELTA 1 DEB, 21548 on Heavens-Above

View DELTA 1 DEB, 21548 on Keep Track

View DELTA 1 DEB, 21548 on Celestrak

View DELTA 1 DEB, 21548 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, 21548

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 2 days ago

TLE from 2 days ago

TLE epoch observation values (Epoch: 2026-06-20T11:02:06.936Z)

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, 21548 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 2 days ago