DELTA 1 DEB, 21320

Orbit data source: Space-Track

DELTA 1 DEB, 21320 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/21320?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

21320, 1975-052AN

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

Small (<0.1 m²)

Expand to show TLE details & history
Last TLE update: 14 hours ago

TLE from 14 hours ago

0 DELTA 1 DEB
1 21320U 75052AN  25349.64413182  .00000201  00000-0  24940-3 0  9994
2 21320  99.5287 224.5155 0127173 222.6560 162.2711 13.73669065730363

Epoch: 2025-12-15T15:27Z

TLE epoch observation values (Epoch: 2025-12-15T15:27:32.989Z)

Latitude

25.01841°

Longitude

-96.38174°

Altitude

1,078.71 km

Speed

7.27 km/s

True Right ascension

14h 40m 10s

True Declination

24° 53' 33"

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

04:00:15

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,077.311 km

Perigee altitude

890.066 km

Semi-major axis

7,361.825 km

Eccentricity

0.01272

Inclination

99.5287°

RAAN

224.5155°

Arg. of periapsis

222.656°

True anomaly

162.70824°

Mean anomaly

162.2711°

Eccentric anomaly

162.49033°

Mean motion

3.43609 °/min

Orbital period

104.77 mins

BSTAR

0.0002494

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

DELTA 1 DEB, 21431 (Decayed)

DELTA 1 DEB, 7965 (Decayed)

DELTA 1 DEB, 21539 (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.
9 mins	2025-12-16 05:54:17.658Z	350.714° N	2025-12-16 05:59:17.658Z	292.767° NW	24.957°	2025-12-16 06:03:17.658Z	245.419° WSW
7 mins	2025-12-16 14:14:17.658Z	94.616° ESE	2025-12-16 14:17:17.658Z	63.415° ENE	19.205°	2025-12-16 14:21:17.658Z	21.35° NNE
11 mins	2025-12-16 15:55:17.658Z	172.988° S	2025-12-16 16:00:17.658Z	254.514° W	43.947°	2025-12-16 16:06:17.658Z	341.208° N
10 mins	2025-12-17 04:39:17.658Z	18.858° NNE	2025-12-17 04:44:17.658Z	136.098° SSE	44.096°	2025-12-17 04:49:17.658Z	190.051° SSW

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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, 21320 on other resources

View DELTA 1 DEB, 21320 on Heavens-Above

View DELTA 1 DEB, 21320 on Keep Track

View DELTA 1 DEB, 21320 on Celestrak

View DELTA 1 DEB, 21320 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, 21320

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 14 hours ago

TLE from 14 hours ago

TLE epoch observation values (Epoch: 2025-12-15T15:27:32.989Z)

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, 21320 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 14 hours ago