DELTA 1 DEB, 21568

Orbit data source: Space-Track

DELTA 1 DEB, 21568 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/21568?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

21568, 1975-052HN

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: 22 hours ago

TLE from 22 hours ago

0 DELTA 1 DEB
1 21568U 75052HN  26078.53188594  .00000618  00000-0  73778-3 0  9997
2 21568  99.9088 286.6666 0241197 332.9770  55.1731 13.59882534715555

Epoch: 2026-03-19T12:45Z

TLE epoch observation values (Epoch: 2026-03-19T12:45:54.945Z)

Latitude

30.00863°

Longitude

-87.65231°

Altitude

940.591 km

Speed

7.433 km/s

True Right ascension

18h 43m 37s

True Declination

29° 51' 49"

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

16:02:10

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,212.18 km

Perigee altitude

854.651 km

Semi-major axis

7,411.553 km

Eccentricity

0.02412

Inclination

99.9088°

RAAN

286.6666°

Arg. of periapsis

332.977°

True anomaly

57.48104°

Mean anomaly

55.1731°

Eccentric anomaly

56.32313°

Mean motion

3.40157 °/min

Orbital period

105.83 mins

BSTAR

0.00073778

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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, 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.
10 mins	2026-03-20 13:27:39.204Z	152.988° SSE	2026-03-20 13:32:39.204Z	44.097° NE	43.205°	2026-03-20 13:37:39.204Z	350.03° N
5 mins	2026-03-20 15:15:39.204Z	250.445° W	2026-03-20 15:17:39.204Z	273.308° WNW	15.22°	2026-03-20 15:20:39.204Z	303.698° NW
12 mins	2026-03-21 02:18:39.204Z	28.228° NE	2026-03-21 02:23:39.204Z	97.481° ESE	40.482°	2026-03-21 02:30:39.204Z	179.802° S
9 mins	2026-03-21 04:03:39.204Z	342.988° N	2026-03-21 04:07:39.204Z	298.207° NW	26.011°	2026-03-21 04:12:39.204Z	247.489° WSW

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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, 21568 on other resources

View DELTA 1 DEB, 21568 on Heavens-Above

View DELTA 1 DEB, 21568 on Keep Track

View DELTA 1 DEB, 21568 on Celestrak

View DELTA 1 DEB, 21568 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, 21568

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 22 hours ago

TLE from 22 hours ago

TLE epoch observation values (Epoch: 2026-03-19T12:45:54.945Z)

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, 21568 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 22 hours ago