DELTA 1 DEB, 21317

Orbit data source: Space-Track

DELTA 1 DEB, 21317 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 src="https://www.satcat.com/sats-embedded/21317?theme=dark&initialShowStats=false" width="600" height="400" frameborder="0" title="Kayhan Space Satcat Satellite Viewer"></iframe>

Iframe URL

https://www.satcat.com/sats-embedded/21317?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

21317, 1975-052AK

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)

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Last TLE update: 1 day ago

TLE from 1 day ago

0 DELTA 1 DEB
1 21317U 75052AK  26078.28309581  .00001417  00000-0  24319-2 0  9996
2 21317 100.1013  16.7890 0210294 179.7254 337.9790 13.38127389668436

Epoch: 2026-03-19T06:47Z

TLE epoch observation values (Epoch: 2026-03-19T06:47:39.477Z)

Latitude

22.86092°

Longitude

-77.67519°

Altitude

973.245 km

Speed

7.438 km/s

True Right ascension

13h 24m 17s

True Declination

22° 44' 30"

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

15:59:03

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,271.146 km

Perigee altitude

956.053 km

Semi-major axis

7,491.736 km

Eccentricity

0.02103

Inclination

100.1013°

RAAN

16.789°

Arg. of periapsis

179.7254°

True anomaly

337.05295°

Mean anomaly

337.979°

Eccentric anomaly

337.51826°

Mean motion

3.34711 °/min

Orbital period

107.56 mins

BSTAR

0.0024319

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

DELTA 1 DEB, 21390 (Decayed)

DELTA 1 DEB, 21687 (Decayed)

DELTA 1 DEB, 21337 (Decayed)

DELTA 1 DEB, 21343 (Decayed)

DELTA 1 DEB, 21346 (Decayed)

DELTA 1 DEB, 21375 (Decayed)

DELTA 1 DEB, 21676 (Decayed)

DELTA 1 DEB, 21675 (Decayed)

DELTA 1 DEB, 21569 (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	2026-03-20 18:04:31.994Z	97.424° ESE	2026-03-20 18:08:31.994Z	60.984° ENE	19.68°	2026-03-20 18:13:31.994Z	14.623° NNE
12 mins	2026-03-20 19:48:31.994Z	168.545° S	2026-03-20 19:54:31.994Z	302.569° NW	44.2°	2026-03-20 20:00:31.994Z	342.225° N
5 mins	2026-03-20 21:38:31.994Z	251.07° W	2026-03-20 21:40:31.994Z	267.958° W	13.147°	2026-03-20 21:43:31.994Z	293.548° NW
10 mins	2026-03-21 08:52:31.994Z	14.177° NNE	2026-03-21 08:57:31.994Z	219.102° SW	44.597°	2026-03-21 09:02:31.994Z	198.857° SSW
4 mins	2026-03-21 10:40:31.994Z	323.315° NNW	2026-03-21 10:42:31.994Z	302.566° NW	13.497°	2026-03-21 10:44:31.994Z	282.261° WNW

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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, 21317 on other resources

View DELTA 1 DEB, 21317 on Heavens-Above

View DELTA 1 DEB, 21317 on Keep Track

View DELTA 1 DEB, 21317 on Celestrak

View DELTA 1 DEB, 21317 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, 21317

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: 2026-03-19T06:47:39.477Z)

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, 21317 on other resources

Documentation

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