DELTA 1 DEB, 21351

Orbit data source: Space-Track

DELTA 1 DEB, 21351 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/21351?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

21351, 1975-052BV

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, 0.3 m

Radar Cross Section

Medium (>0.1 m² and <1 m²)

Expand to show TLE details & history
Last TLE update: 11 hours ago

TLE from 11 hours ago

0 DELTA 1 DEB
1 21351U 75052BV  26242.32185617  .00000000  00000-0  87470-4 0  9990
2 21351  99.8564   3.5321 0066030 140.5510 276.8863 13.31654935714079

Epoch: 2026-08-30T07:43Z

TLE epoch observation values (Epoch: 2026-08-30T07:43:28.373Z)

Latitude

55.5167°

Longitude

-105.43145°

Altitude

1,144.013 km

Speed

7.289 km/s

True Right ascension

23h 15m 49s

True Declination

55° 21' 51"

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

10:20:20

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,187.489 km

Perigee altitude

1,088.233 km

Semi-major axis

7,515.998 km

Eccentricity

0.0066

Inclination

99.8564°

RAAN

3.5321°

Arg. of periapsis

140.551°

True anomaly

276.13439°

Mean anomaly

276.8863°

Eccentric anomaly

276.51042°

Mean motion

3.33091 °/min

Orbital period

108.08 mins

BSTAR

0.00008747

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

DELTA 1 DEB, 21563 (Decayed)

DELTA 1 DEB, 21494 (Decayed)

DELTA 1 DEB, 21340 (Decayed)

DELTA 1 DEB, 21491 (Decayed)

DELTA 1 DEB, 35533 (Decayed)

DELTA 1 DEB, 21432 (Decayed)

DELTA 1 DEB, 37628 (Decayed)

DELTA 1 DEB, 21376 (Decayed)

DELTA 1 DEB, 21503 (Decayed)

DELTA 1 DEB, 21328 (Decayed)

DELTA 1 DEB, 21676 (Decayed)

DELTA 1 DEB, 21508 (Decayed)

DELTA 1 DEB, 21369 (Decayed)

DELTA 1 DEB, 42630

DELTA 1 DEB, 21430 (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.
12 mins	2026-08-30 20:39:55.656Z	24.8° NE	2026-08-30 20:45:55.656Z	106.13° ESE	39.958°	2026-08-30 20:51:55.656Z	178.873° S
9 mins	2026-08-30 22:27:55.656Z	343.496° N	2026-08-30 22:31:55.656Z	298.859° NW	23.237°	2026-08-30 22:36:55.656Z	247.852° W
10 mins	2026-08-31 07:01:55.656Z	117.843° SE	2026-08-31 07:05:55.656Z	71.789° E	29.524°	2026-08-31 07:11:55.656Z	4.263° NNE
11 mins	2026-08-31 08:47:55.656Z	197.943° SSW	2026-08-31 08:52:55.656Z	265.337° W	34.334°	2026-08-31 08:58:55.656Z	330.478° 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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Check out DELTA 1 DEB, 21351 on other resources

View DELTA 1 DEB, 21351 on Heavens-Above

View DELTA 1 DEB, 21351 on Keep Track

View DELTA 1 DEB, 21351 on Celestrak

View DELTA 1 DEB, 21351 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, 21351

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 11 hours ago

TLE from 11 hours ago

TLE epoch observation values (Epoch: 2026-08-30T07:43:28.373Z)

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, 21351 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 11 hours ago