DELTA 1 DEB, 21355

Orbit data source: Space-Track

DELTA 1 DEB, 21355 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/21355?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

21355, 1975-052BZ

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: 1 day ago

TLE from 1 day ago

0 DELTA 1 DEB
1 21355U 75052BZ  26045.40159772  .00000004  00000-0  11339-3 0  9991
2 21355  99.6262  29.2328 0149246 293.7512 223.6899 13.14185982666002

Epoch: 2026-02-14T09:38Z

TLE epoch observation values (Epoch: 2026-02-14T09:38:18.043Z)

Latitude

23.39037°

Longitude

-75.5815°

Altitude

1,292.354 km

Speed

7.173 km/s

True Right ascension

14h 13m 40s

True Declination

23° 16' 27"

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

12:35:38

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,317.52 km

Perigee altitude

1,091.188 km

Semi-major axis

7,582.491 km

Eccentricity

0.01492

Inclination

99.6262°

RAAN

29.2328°

Arg. of periapsis

293.7512°

True anomaly

222.52436°

Mean anomaly

223.6899°

Eccentric anomaly

223.10556°

Mean motion

3.28719 °/min

Orbital period

109.52 mins

BSTAR

0.00011339

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

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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	2026-02-15 11:01:25.865Z	27.03° NE	2026-02-15 11:08:25.865Z	99.604° ESE	36.629°	2026-02-15 11:15:25.865Z	171.148° S
12 mins	2026-02-15 12:50:25.865Z	354.13° N	2026-02-15 12:56:25.865Z	290.905° WNW	30.575°	2026-02-15 13:02:25.865Z	235.49° WSW
11 mins	2026-02-15 21:31:25.865Z	114.606° SE	2026-02-15 21:36:25.865Z	60.804° ENE	28.054°	2026-02-15 21:42:25.865Z	4.65° NNE
12 mins	2026-02-15 23:18:25.865Z	189.819° SSW	2026-02-15 23:24:25.865Z	273.499° WNW	37.82°	2026-02-15 23:30:25.865Z	333.594° NNW

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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, 21355 on other resources

View DELTA 1 DEB, 21355 on Heavens-Above

View DELTA 1 DEB, 21355 on Keep Track

View DELTA 1 DEB, 21355 on Celestrak

View DELTA 1 DEB, 21355 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, 21355

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: 2026-02-14T09:38:18.043Z)

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, 21355 on other resources

Documentation

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