DELTA 1 DEB, 21910

Orbit data source: Space-Track

DELTA 1 DEB, 21910 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/21910?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

21910, 1975-052JR

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)

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Last TLE update: 1 day ago

TLE from 1 day ago

0 DELTA 1 DEB
1 21910U 75052JR  25289.03187519  .00000293  00000-0  11385-2 0  9996
2 21910  99.6419 313.5042 0328268 200.0388 189.7089 12.80723492592760

Epoch: 2025-10-16T00:45Z

TLE epoch observation values (Epoch: 2025-10-16T00:45:54.016Z)

Latitude

28.72895°

Longitude

-88.08587°

Altitude

1,591.889 km

Speed

6.96 km/s

True Right ascension

20h 32m 44s

True Declination

28° 35' 58"

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

21:12:30

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,589.179 km

Perigee altitude

1,082.721 km

Semi-major axis

7,714.087 km

Eccentricity

0.03283

Inclination

99.6419°

RAAN

313.5042°

Arg. of periapsis

200.0388°

True anomaly

189.09923°

Mean anomaly

189.7089°

Eccentric anomaly

189.40166°

Mean motion

3.20344 °/min

Orbital period

112.38 mins

BSTAR

0.0011385

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

DELTA 1 DEB, 21519 (Decayed)

DELTA 1 DEB, 21518 (Decayed)

DELTA 1 DEB, 21432 (Decayed)

DELTA 1 DEB, 37630 (Decayed)

DELTA 1 DEB, 21343 (Decayed)

DELTA 1 DEB, 21543 (Decayed)

DELTA 1 DEB, 21385 (Decayed)

DELTA 1 DEB, 21491 (Decayed)

DELTA 1 DEB, 21328 (Decayed)

DELTA 1 DEB, 21564 (Decayed)

DELTA 1 DEB, 21520 (Decayed)

DELTA 1 DEB, 21456 (Decayed)

DELTA 1 DEB, 21318 (Decayed)

DELTA 1 DEB, 7965 (Decayed)

DELTA 1 DEB, 21517 (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.
14 mins	2025-10-17 02:56:34.243Z	209.711° SW	2025-10-17 03:03:34.243Z	264.721° W	27.273°	2025-10-17 03:10:34.243Z	322.433° NNW
6 mins	2025-10-17 12:56:34.243Z	64.493° ENE	2025-10-17 12:58:34.243Z	82.313° E	14.287°	2025-10-17 13:02:34.243Z	118.454° SE
13 mins	2025-10-17 14:44:34.243Z	13.429° NNE	2025-10-17 14:50:34.243Z	342.047° N	44.727°	2025-10-17 14:57:34.243Z	198.958° SSW
6 mins	2025-10-17 16:37:34.243Z	332.502° NNW	2025-10-17 16:40:34.243Z	305.564° NW	15.762°	2025-10-17 16:43:34.243Z	278.311° WNW
10 mins	2025-10-17 23:40:34.243Z	89.907° E	2025-10-17 23:45:34.243Z	51.375° ENE	19.268°	2025-10-17 23:50:34.243Z	14.328° NNE
15 mins	2025-10-18 01:27:34.243Z	158.533° S	2025-10-18 01:34:34.243Z	86.315° E	44.799°	2025-10-18 01:42:34.243Z	347.164° N

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, 21910 on other resources

View DELTA 1 DEB, 21910 on Heavens-Above

View DELTA 1 DEB, 21910 on Keep Track

View DELTA 1 DEB, 21910 on Celestrak

View DELTA 1 DEB, 21910 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, 21910

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: 2025-10-16T00:45:54.016Z)

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, 21910 on other resources

Documentation

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