DELTA 1 DEB, 21351

Orbit data source: Space-Track

DELTA 1 DEB, 21351 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/21351?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

21351, 1975-052BV

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: 2 days ago

TLE from 2 days ago

0 DELTA 1 DEB
1 21351U 75052BV  26171.32194939  .00000014  00000-0  11657-3 0  9996
2 21351  99.8480 295.5484 0064694 311.1201 106.2922 13.31648628704620

Epoch: 2026-06-20T07:43Z

TLE epoch observation values (Epoch: 2026-06-20T07:43:36.427Z)

Latitude

56.88528°

Longitude

-104.24603°

Altitude

1,163.913 km

Speed

7.27 km/s

True Right ascension

18h 40m 46s

True Declination

56° 44' 10"

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

15:47:06

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,186.509 km

Perigee altitude

1,089.26 km

Semi-major axis

7,516.022 km

Eccentricity

0.00647

Inclination

99.848°

RAAN

295.5484°

Arg. of periapsis

311.1201°

True anomaly

107.00214°

Mean anomaly

106.2922°

Eccentric anomaly

106.64733°

Mean motion

3.3309 °/min

Orbital period

108.08 mins

BSTAR

0.00011657

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

DELTA 1 DEB, 26844

DELTA 1 DEB, 21374

DELTA 1 DEB, 26836

DELTA 1 DEB, 21679 (Decayed)

DELTA 1 DEB, 21673 (Decayed)

DELTA 1 DEB, 21322 (Decayed)

DELTA 1 DEB, 21510 (Decayed)

DELTA 1 DEB, 21569 (Decayed)

DELTA 1 DEB, 21274 (Decayed)

DELTA 1 DEB, 21520 (Decayed)

DELTA 1 DEB, 21454 (Decayed)

DELTA 1 DEB, 21671 (Decayed)

DELTA 1 DEB, 21440 (Decayed)

DELTA 1 DEB, 21343 (Decayed)

DELTA 1 DEB, 21349 (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.
8 mins	2026-06-22 06:30:01.281Z	92.133° ESE	2026-06-22 06:34:01.281Z	53.568° ENE	17.615°	2026-06-22 06:38:01.281Z	17.327° NNE
12 mins	2026-06-22 08:14:01.281Z	166.441° S	2026-06-22 08:19:01.281Z	196.549° SSW	44.533°	2026-06-22 08:26:01.281Z	343.798° N
6 mins	2026-06-22 19:37:01.281Z	67.122° ENE	2026-06-22 19:39:01.281Z	86.017° E	15.917°	2026-06-22 19:43:01.281Z	122.73° SE
12 mins	2026-06-22 21:21:01.281Z	13.076° NNE	2026-06-22 21:27:01.281Z	237.663° WSW	44.619°	2026-06-22 21:33:01.281Z	200.257° SSW
6 mins	2026-06-22 23:10:01.281Z	325.701° NNW	2026-06-22 23:12:01.281Z	306.685° NW	15.875°	2026-06-22 23:16:01.281Z	271.158° 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, 21351 on other resources

View DELTA 1 DEB, 21351 on Heavens-Above

View DELTA 1 DEB, 21351 on Keep Track

View DELTA 1 DEB, 21351 on Celestrak

View DELTA 1 DEB, 21351 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, 21351

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 2 days ago

TLE from 2 days ago

TLE epoch observation values (Epoch: 2026-06-20T07:43:36.427Z)

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, 21351 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 2 days ago