DELTA 1 DEB, 21339

Orbit data source: Space-Track

DELTA 1 DEB, 21339 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/21339?theme=dark&initialShowStats=false

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Identifier

21339, 1975-052BH

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)

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Last TLE update: 2 days ago

TLE from 2 days ago

0 DELTA 1 DEB
1 21339U 75052BH  26167.33645821  .00000348  00000-0  13809-2 0  9999
2 21339  99.5762 305.0940 0372852 230.1935 188.8496 12.74008435629521

Epoch: 2026-06-16T08:04Z

TLE epoch observation values (Epoch: 2026-06-16T08:04:29.989Z)

Latitude

57.22804°

Longitude

-95.75962°

Altitude

1,660.72 km

Speed

6.917 km/s

True Right ascension

19h 19m 54s

True Declination

57° 05' 20"

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

23:03:31

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,651.678 km

Perigee altitude

1,074.415 km

Semi-major axis

7,741.184 km

Eccentricity

0.03729

Inclination

99.5762°

RAAN

305.094°

Arg. of periapsis

230.1935°

True anomaly

188.2213°

Mean anomaly

188.8496°

Eccentric anomaly

188.53263°

Mean motion

3.18663 °/min

Orbital period

112.97 mins

BSTAR

0.0013809

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

DELTA 1 DEB, 21456 (Decayed)

DELTA 1 DEB, 21542

DELTA 1 DEB, 21496

DELTA 1 DEB, 21376 (Decayed)

DELTA 1 DEB, 21334 (Decayed)

DELTA 1 DEB, 21505 (Decayed)

DELTA 1 DEB, 21562 (Decayed)

DELTA 1 DEB, 21330

DELTA 1 DEB, 42633

DELTA 1 DEB, 21350 (Decayed)

DELTA 1 DEB, 21685 (Decayed)

DELTA 1 DEB, 37629 (Decayed)

DELTA 1 DEB, 21519 (Decayed)

DELTA 1 DEB, 21539 (Decayed)

DELTA 1 DEB, 21440 (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	2026-06-18 20:43:59.328Z	37.377° NE	2026-06-18 20:49:59.328Z	86.334° E	23.748°	2026-06-18 20:55:59.328Z	143.391° SSE
13 mins	2026-06-18 22:35:59.328Z	5.084° NNE	2026-06-18 22:41:59.328Z	300.107° NW	41.094°	2026-06-18 22:48:59.328Z	214.294° SW
4 mins	2026-06-19 00:29:59.328Z	325.567° NNW	2026-06-19 00:31:59.328Z	310.224° NW	12.471°	2026-06-19 00:33:59.328Z	294.79° NW
13 mins	2026-06-19 07:31:59.328Z	108.209° ESE	2026-06-19 07:37:59.328Z	60.152° ENE	27.063°	2026-06-19 07:44:59.328Z	6.121° NNE
16 mins	2026-06-19 09:20:59.328Z	175.155° S	2026-06-19 09:28:59.328Z	276.797° WNW	43.363°	2026-06-19 09:36:59.328Z	340.62° N
7 mins	2026-06-19 11:17:59.328Z	253.855° W	2026-06-19 11:20:59.328Z	274.179° WNW	13.886°	2026-06-19 11:24:59.328Z	300.814° NW

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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, 21339 on other resources

View DELTA 1 DEB, 21339 on Heavens-Above

View DELTA 1 DEB, 21339 on Keep Track

View DELTA 1 DEB, 21339 on Celestrak

View DELTA 1 DEB, 21339 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, 21339

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: 2026-06-16T08:04:29.989Z)

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, 21339 on other resources

Documentation

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