DELTA 1 DEB, 21374

Orbit data source: Space-Track

DELTA 1 DEB, 21374 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/21374?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/21374?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

21374, 1975-052CU

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 (50 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: 17 hours ago

TLE from 17 hours ago

0 DELTA 1 DEB
1 21374U 75052CU  25316.02116295  .00001141  00000-0  12415-2 0  9991
2 21374  99.8860 153.1756 0255988 116.7952  35.1791 13.61739317704216

Epoch: 2025-11-12T00:30Z

TLE epoch observation values (Epoch: 2025-11-12T00:30:28.478Z)

Latitude

25.90591°

Longitude

-81.01245°

Altitude

879.06 km

Speed

7.491 km/s

True Right ascension

22h 32m 01s

True Declination

25° 46' 24"

Sunlit

Object was in daylight 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

13:47:38

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,216.225 km

Perigee altitude

837.116 km

Semi-major axis

7,404.807 km

Eccentricity

0.0256

Inclination

99.886°

RAAN

153.1756°

Arg. of periapsis

116.7952°

True anomaly

36.91421°

Mean anomaly

35.1791°

Eccentric anomaly

36.04208°

Mean motion

3.40622 °/min

Orbital period

105.69 mins

BSTAR

0.0012415

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

DELTA 1 DEB, 21440 (Decayed)

DELTA 1 DEB, 42660 (Decayed)

DELTA 1 DEB, 21600 (Decayed)

DELTA 1 DEB, 21381 (Decayed)

DELTA 1 DEB, 21474 (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	2025-11-13 01:04:44.852Z	50.422° ENE	2025-11-13 01:08:44.852Z	100.85° ESE	19.261°	2025-11-13 01:11:44.852Z	137.133° SSE
8 mins	2025-11-13 02:49:44.852Z	353.587° N	2025-11-13 02:52:44.852Z	295.888° NW	36.499°	2025-11-13 02:57:44.852Z	219.597° SW
10 mins	2025-11-13 12:55:44.852Z	152.867° SSE	2025-11-13 13:00:44.852Z	61.987° ENE	43.381°	2025-11-13 13:05:44.852Z	350.514° N
6 mins	2025-11-13 14:42:44.852Z	239.427° WSW	2025-11-13 14:44:44.852Z	260.509° W	15.556°	2025-11-13 14:48:44.852Z	303.236° NW

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, 21374 on other resources

View DELTA 1 DEB, 21374 on Heavens-Above

View DELTA 1 DEB, 21374 on Keep Track

View DELTA 1 DEB, 21374 on Celestrak

View DELTA 1 DEB, 21374 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, 21374

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 17 hours ago

TLE from 17 hours ago

TLE epoch observation values (Epoch: 2025-11-12T00:30:28.478Z)

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, 21374 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 17 hours ago