DELTA 1 DEB, 21471

Orbit data source: Space-Track

DELTA 1 DEB, 21471 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/21471?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

21471, 1975-052FF

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: 1 day ago

TLE from 1 day ago

0 DELTA 1 DEB
1 21471U 75052FF  25350.41962914  .00000407  00000-0  51434-3 0  9996
2 21471  99.9280 140.1856 0248842  87.0550 338.6354 13.57517887711656

Epoch: 2025-12-16T10:04Z

TLE epoch observation values (Epoch: 2025-12-16T10:04:15.957Z)

Latitude

62.96156°

Longitude

-116.13119°

Altitude

884.033 km

Speed

7.501 km/s

True Right ascension

08h 00m 57s

True Declination

62° 49' 28"

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

13:07:27

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,226.672 km

Perigee altitude

857.382 km

Semi-major axis

7,420.164 km

Eccentricity

0.02488

Inclination

99.928°

RAAN

140.1856°

Arg. of periapsis

87.055°

True anomaly

337.5657°

Mean anomaly

338.6354°

Eccentric anomaly

338.10369°

Mean motion

3.39565 °/min

Orbital period

106.02 mins

BSTAR

0.00051434

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

DELTA 1 DEB, 21385 (Decayed)

DELTA 1 DEB, 21447 (Decayed)

DELTA 1 DEB, 21325

DELTA 1 DEB, 21550

DELTA 1 DEB, 21330

DELTA 1 DEB, 37629 (Decayed)

DELTA 1 DEB, 21282

DELTA 1 DEB, 42656

DELTA 1 DEB, 21285

DELTA 1 DEB, 21597 (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.
7 mins	2025-12-17 21:45:03.989Z	53.455° ENE	2025-12-17 21:49:03.989Z	97.806° ESE	16.944°	2025-12-17 21:52:03.989Z	130.134° SE
9 mins	2025-12-17 23:30:03.989Z	2.82° NNE	2025-12-17 23:34:03.989Z	269.52° W	41.293°	2025-12-17 23:39:03.989Z	210.635° SW
9 mins	2025-12-18 09:39:03.989Z	144.205° SSE	2025-12-18 09:43:03.989Z	82.719° E	40.158°	2025-12-18 09:48:03.989Z	354.963° N
5 mins	2025-12-18 11:26:03.989Z	238.951° WSW	2025-12-18 11:28:03.989Z	263.364° W	17.343°	2025-12-18 11:31:03.989Z	299.693° 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, 21471 on other resources

View DELTA 1 DEB, 21471 on Heavens-Above

View DELTA 1 DEB, 21471 on Keep Track

View DELTA 1 DEB, 21471 on Celestrak

View DELTA 1 DEB, 21471 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, 21471

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: 2025-12-16T10:04:15.957Z)

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, 21471 on other resources

Documentation

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