DELTA 1 DEB, 21373

Orbit data source: Space-Track

DELTA 1 DEB, 21373 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/21373?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

21373, 1975-052CT

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 21373U 75052CT  26171.18107330  .00000058  00000-0  20458-3 0  9990
2 21373  99.9378  65.8700 0075634  19.4526 133.4200 13.32695994704714

Epoch: 2026-06-20T04:20Z

TLE epoch observation values (Epoch: 2026-06-20T04:20:44.733Z)

Latitude

26.10752°

Longitude

-82.81521°

Altitude

1,178.942 km

Speed

7.247 km/s

True Right ascension

16h 43m 04s

True Declination

25° 58' 46"

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

14:34:43

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,190.765 km

Perigee altitude

1,077.131 km

Semi-major axis

7,512.085 km

Eccentricity

0.00756

Inclination

99.9378°

RAAN

65.87°

Arg. of periapsis

19.4526°

True anomaly

134.04544°

Mean anomaly

133.42°

Eccentric anomaly

133.73313°

Mean motion

3.33352 °/min

Orbital period

107.99 mins

BSTAR

0.00020458

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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.
11 mins	2026-06-22 04:50:50.697Z	40.304° NE	2026-06-22 04:55:50.697Z	92.27° ESE	26.677°	2026-06-22 05:01:50.697Z	153.725° SSE
11 mins	2026-06-22 06:37:50.697Z	358.524° N	2026-06-22 06:42:50.697Z	287.984° WNW	37.291°	2026-06-22 06:48:50.697Z	221.584° SW
7 mins	2026-06-22 15:13:50.697Z	86.766° E	2026-06-22 15:16:50.697Z	55.995° ENE	17.045°	2026-06-22 15:20:50.697Z	18.092° NNE
11 mins	2026-06-22 16:57:50.697Z	168.084° S	2026-06-22 17:02:50.697Z	307.555° NW	44.329°	2026-06-22 17:08:50.697Z	343.231° 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, 21373 on other resources

View DELTA 1 DEB, 21373 on Heavens-Above

View DELTA 1 DEB, 21373 on Keep Track

View DELTA 1 DEB, 21373 on Celestrak

View DELTA 1 DEB, 21373 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, 21373

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: 2026-06-20T04:20:44.733Z)

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, 21373 on other resources

Documentation

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