DELTA 1 DEB, 21371

Orbit data source: Space-Track

DELTA 1 DEB, 21371 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/21371?theme=dark&initialShowStats=false

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Identifier

21371, 1975-052CR

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: 2 days ago

TLE from 2 days ago

0 DELTA 1 DEB
1 21371U 75052CR  26171.46220160 -.00000046  00000-0 -17596-4 0  9995
2 21371  99.7744 240.4178 0153445 104.2941 276.1002 13.14311682682414

Epoch: 2026-06-20T11:05Z

TLE epoch observation values (Epoch: 2026-06-20T11:05:34.218Z)

Latitude

18.35771°

Longitude

162.08824°

Altitude

1,198.139 km

Speed

7.261 km/s

True Right ascension

15h 48m 37s

True Declination

18° 15' 40"

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

17:32:51

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,320.22 km

Perigee altitude

1,087.535 km

Semi-major axis

7,582.015 km

Eccentricity

0.01534

Inclination

99.7744°

RAAN

240.4178°

Arg. of periapsis

104.2941°

True anomaly

274.34851°

Mean anomaly

276.1002°

Eccentric anomaly

275.22468°

Mean motion

3.2875 °/min

Orbital period

109.51 mins

BSTAR

-0.000017596

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

DELTA 1 DEB, 21374

DELTA 1 DEB, 21464

DELTA 1 DEB, 27577

DELTA 1 DEB, 21456 (Decayed)

DELTA 1 DEB, 21518 (Decayed)

DELTA 1 DEB, 21385 (Decayed)

DELTA 1 DEB, 37628 (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	2026-06-22 16:35:29.009Z	35.599° NE	2026-06-22 16:41:29.009Z	104.954° ESE	28.965°	2026-06-22 16:46:29.009Z	157.309° SSE
10 mins	2026-06-22 18:24:29.009Z	353.775° N	2026-06-22 18:29:29.009Z	283.736° WNW	33.017°	2026-06-22 18:34:29.009Z	229.526° WSW
9 mins	2026-06-23 03:06:29.009Z	103.827° ESE	2026-06-23 03:10:29.009Z	61.959° ENE	22.395°	2026-06-23 03:15:29.009Z	11.683° NNE
12 mins	2026-06-23 04:52:29.009Z	180.417° SSW	2026-06-23 04:58:29.009Z	275.724° WNW	41.015°	2026-06-23 05:04:29.009Z	337.705° N

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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, 21371 on other resources

View DELTA 1 DEB, 21371 on Heavens-Above

View DELTA 1 DEB, 21371 on Keep Track

View DELTA 1 DEB, 21371 on Celestrak

View DELTA 1 DEB, 21371 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, 21371

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: 2026-06-20T11:05:34.218Z)

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, 21371 on other resources

Documentation

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