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 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)

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

TLE from 2 days ago

0 DELTA 1 DEB
1 21473U 75052FH  26020.07238760  .00000795  00000-0  91764-3 0  9990
2 21473  99.9200 208.4501 0239437 339.1338 139.6083 13.61089236713118

Epoch: 2026-01-20T01:44Z

TLE epoch observation values (Epoch: 2026-01-20T01:44:14.288Z)

Latitude

58.18914°

Longitude

-100.77765°

Altitude

1,178.346 km

Speed

7.202 km/s

True Right ascension

02h 58m 57s

True Declination

58° 02' 36"

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

06:40:44

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,206.387 km

Perigee altitude

851.677 km

Semi-major axis

7,407.169 km

Eccentricity

0.02394

Inclination

99.92°

RAAN

208.4501°

Arg. of periapsis

339.1338°

True anomaly

141.34635°

Mean anomaly

139.6083°

Eccentric anomaly

140.48126°

Mean motion

3.40459 °/min

Orbital period

105.74 mins

BSTAR

0.00091764

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

DELTA 1 DEB, 21381 (Decayed)

DELTA 1 DEB, 21389 (Decayed)

DELTA 1 DEB, 21496

DELTA 1 DEB, 21335 (Decayed)

DELTA 1 DEB, 21683 (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.
10 mins	2026-01-22 11:29:51.906Z	128.004° SE	2026-01-22 11:34:51.906Z	59.22° ENE	31.377°	2026-01-22 11:39:51.906Z	1.774° NNE
8 mins	2026-01-22 13:15:51.906Z	216.859° SW	2026-01-22 13:18:51.906Z	262.653° W	27.723°	2026-01-22 13:23:51.906Z	323.045° NNW
11 mins	2026-01-23 00:19:51.906Z	41.07° NE	2026-01-23 00:24:51.906Z	94.846° ESE	28.052°	2026-01-23 00:30:51.906Z	155.324° SSE
12 mins	2026-01-23 02:03:51.906Z	0.489° NNE	2026-01-23 02:08:51.906Z	303.426° NW	37.372°	2026-01-23 02:15:51.906Z	220.808° 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, 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: 2 days ago

TLE from 2 days ago

TLE epoch observation values (Epoch: 2026-01-20T01:44:14.288Z)

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: 2 days ago