DELTA 1 DEB, 21473

Orbit data source: Space-Track

DELTA 1 DEB, 21473 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 src="https://www.satcat.com/sats-embedded/21473?theme=dark&initialShowStats=false" width="600" height="400" frameborder="0" title="Kayhan Space Satcat Satellite Viewer"></iframe>

Iframe URL

https://www.satcat.com/sats-embedded/21473?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

21473, 1975-052FH

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)

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Last TLE update: 8 hours ago

TLE from 8 hours ago

0 DELTA 1 DEB
1 21473U 75052FH  26127.09290573  .00000585  00000-0  68257-3 0  9998
2 21473  99.9243 317.2110 0240480  70.4514  51.4902 13.61284327727676

Epoch: 2026-05-07T02:13Z

TLE epoch observation values (Epoch: 2026-05-07T02:13:47.055Z)

Latitude

54.71729°

Longitude

-106.93968°

Altitude

931.692 km

Speed

7.445 km/s

True Right ascension

10h 05m 48s

True Declination

54° 33' 32"

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

18:16:13

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,206.434 km

Perigee altitude

850.213 km

Semi-major axis

7,406.461 km

Eccentricity

0.02405

Inclination

99.9243°

RAAN

317.211°

Arg. of periapsis

70.4514°

True anomaly

53.6871°

Mean anomaly

51.4902°

Eccentric anomaly

52.58456°

Mean motion

3.40508 °/min

Orbital period

105.72 mins

BSTAR

0.00068257

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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.
10 mins	2026-05-07 12:20:36.243Z	155.418° SSE	2026-05-07 12:25:36.243Z	56.872° ENE	43.786°	2026-05-07 12:30:36.243Z	349.133° N
9 mins	2026-05-08 01:10:36.243Z	32.731° NE	2026-05-08 01:14:36.243Z	109.01° ESE	38.712°	2026-05-08 01:19:36.243Z	176.017° S
7 mins	2026-05-08 02:55:36.243Z	333.691° NNW	2026-05-08 02:58:36.243Z	293.694° NW	21.763°	2026-05-08 03:02:36.243Z	249.873° W

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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, 21473 on other resources

View DELTA 1 DEB, 21473 on Heavens-Above

View DELTA 1 DEB, 21473 on Keep Track

View DELTA 1 DEB, 21473 on Celestrak

View DELTA 1 DEB, 21473 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, 21473

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 8 hours ago

TLE from 8 hours ago

TLE epoch observation values (Epoch: 2026-05-07T02:13:47.055Z)

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, 21473 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 8 hours ago