DELTA 1 DEB, 21288

Orbit data source: Space-Track

DELTA 1 DEB, 21288 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/21288?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

21288, 1975-052Z

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, 0.3 m

Radar Cross Section

Medium (>0.1 m² and <1 m²)

Expand to show TLE details & history
Last TLE update: 23 hours ago

TLE from 23 hours ago

0 DELTA 1 DEB
1 21288U 75052Z   26241.75559288 -.00000257  00000-0 -79436-3 0  9992
2 21288  99.6872 160.2036 0358721  25.4589   0.5503 12.75759041644414

Epoch: 2026-08-29T18:08Z

TLE epoch observation values (Epoch: 2026-08-29T18:08:03.224Z)

Latitude

25.68486°

Longitude

-94.45559°

Altitude

1,083.923 km

Speed

7.442 km/s

True Right ascension

10h 22m 04s

True Declination

25° 33' 24"

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

08:22:46

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,633.403 km

Perigee altitude

1,078.526 km

Semi-major axis

7,734.101 km

Eccentricity

0.03587

Inclination

99.6872°

RAAN

160.2036°

Arg. of periapsis

25.4589°

True anomaly

0.59163°

Mean anomaly

0.5503°

Eccentric anomaly

0.57077°

Mean motion

3.19101 °/min

Orbital period

112.82 mins

BSTAR

-0.00079436

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

DELTA 1 DEB, 21324

DELTA 1 DEB, 21366

DELTA 1 DEB, 21321 (Decayed)

DELTA 1 DEB, 21435 (Decayed)

DELTA 1 DEB, 21543 (Decayed)

DELTA 1 DEB, 21328 (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.
6 mins	2026-08-30 16:47:41.140Z	78.534° E	2026-08-30 16:49:41.140Z	58.329° ENE	15.552°	2026-08-30 16:53:41.140Z	20.757° NNE
11 mins	2026-08-30 18:35:41.140Z	166.96° S	2026-08-30 18:40:41.140Z	317.508° NNW	44.438°	2026-08-30 18:46:41.140Z	344.149° N
13 mins	2026-08-31 06:23:41.140Z	43.158° NE	2026-08-31 06:28:41.140Z	91.883° ESE	29.091°	2026-08-31 06:36:41.140Z	157.484° SSE
15 mins	2026-08-31 08:13:41.140Z	3° NNE	2026-08-31 08:20:41.140Z	280.823° WNW	39.196°	2026-08-31 08:28:41.140Z	217.676° SW

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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, 21288 on other resources

View DELTA 1 DEB, 21288 on Heavens-Above

View DELTA 1 DEB, 21288 on Keep Track

View DELTA 1 DEB, 21288 on Celestrak

View DELTA 1 DEB, 21288 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, 21288

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 23 hours ago

TLE from 23 hours ago

TLE epoch observation values (Epoch: 2026-08-29T18:08:03.224Z)

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, 21288 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 23 hours ago