DELTA 1 DEB, 21291

Orbit data source: Space-Track

DELTA 1 DEB, 21291 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/21291?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

21291, 1975-052AC

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, 0.2 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 21291U 75052AC  26001.36983709  .00000741  00000-0  66821-3 0  9996
2 21291  99.8648 157.1327 0137616 124.4742 267.3441 13.83218588744587

Epoch: 2026-01-01T08:52Z

TLE epoch observation values (Epoch: 2026-01-01T08:52:33.924Z)

Latitude

29.80245°

Longitude

-82.72034°

Altitude

962.195 km

Speed

7.37 km/s

True Right ascension

10h 05m 47s

True Declination

29° 39' 31"

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

17:39:57

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,050.602 km

Perigee altitude

848.914 km

Semi-major axis

7,327.895 km

Eccentricity

0.01376

Inclination

99.8648°

RAAN

157.1327°

Arg. of periapsis

124.4742°

True anomaly

265.77028°

Mean anomaly

267.3441°

Eccentric anomaly

266.55704°

Mean motion

3.45999 °/min

Orbital period

104.05 mins

BSTAR

0.00066821

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

DELTA 1 DEB, 42660 (Decayed)

DELTA 1 DEB, 21348 (Decayed)

DELTA 1 DEB, 21390 (Decayed)

DELTA 1 DEB, 21687 (Decayed)

DELTA 1 DEB, 21675 (Decayed)

DELTA 1 DEB, 21517 (Decayed)

DELTA 1 DEB, 21510 (Decayed)

DELTA 1 DEB, 21449 (Decayed)

DELTA 1 DEB, 37629 (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.
5 mins	2026-01-02 21:48:54.448Z	60.955° ENE	2026-01-02 21:51:54.448Z	95.697° ESE	14.59°	2026-01-02 21:53:54.448Z	119.032° SE
9 mins	2026-01-02 23:30:54.448Z	5.905° NNE	2026-01-02 23:34:54.448Z	280.24° WNW	42.35°	2026-01-02 23:39:54.448Z	208.102° SW
9 mins	2026-01-03 09:28:54.448Z	129.507° SE	2026-01-03 09:32:54.448Z	63.007° ENE	34.396°	2026-01-03 09:37:54.448Z	359.426° N
8 mins	2026-01-03 11:11:54.448Z	216.565° SW	2026-01-03 11:15:54.448Z	270.514° WNW	24.119°	2026-01-03 11:19:54.448Z	317.432° 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, 21291 on other resources

View DELTA 1 DEB, 21291 on Heavens-Above

View DELTA 1 DEB, 21291 on Keep Track

View DELTA 1 DEB, 21291 on Celestrak

View DELTA 1 DEB, 21291 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, 21291

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: 2026-01-01T08:52:33.924Z)

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, 21291 on other resources

Documentation

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