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

Medium (>0.1 m² and <1 m²)

Expand to show TLE details & history
Last TLE update: 9 hours ago

TLE from 9 hours ago

0 DELTA 1 DEB
1 21473U 75052FH  26242.46661051  .00000502  00000-0  59239-3 0  9999
2 21473  99.9222  74.4625 0239330 139.8890 283.3489 13.61416899743377

Epoch: 2026-08-30T11:11Z

TLE epoch observation values (Epoch: 2026-08-30T11:11:55.148Z)

Latitude

59.16434°

Longitude

-89.12736°

Altitude

1,003.586 km

Speed

7.374 km/s

True Right ascension

03h 50m 03s

True Declination

59° 01' 04"

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

11:20:30

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,205.09 km

Perigee altitude

850.595 km

Semi-major axis

7,405.98 km

Eccentricity

0.02393

Inclination

99.9222°

RAAN

74.4625°

Arg. of periapsis

139.889°

True anomaly

280.66291°

Mean anomaly

283.3489°

Eccentric anomaly

282.00764°

Mean motion

3.40541 °/min

Orbital period

105.71 mins

BSTAR

0.00059239

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

DELTA 1 DEB, 21519 (Decayed)

DELTA 1 DEB, 21378 (Decayed)

DELTA 1 DEB, 21335 (Decayed)

DELTA 1 DEB, 21440 (Decayed)

DELTA 1 DEB, 21375 (Decayed)

DELTA 1 DEB, 21451 (Decayed)

DELTA 1 DEB, 21495 (Decayed)

DELTA 1 DEB, 21509 (Decayed)

DELTA 1 DEB, 21563 (Decayed)

DELTA 1 DEB, 21539 (Decayed)

DELTA 1 DEB, 21685 (Decayed)

DELTA 1 DEB, 21510 (Decayed)

DELTA 1 DEB, 21357 (Decayed)

DELTA 1 DEB, 21389 (Decayed)

DELTA 1 DEB, 37630 (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	2026-08-31 01:35:56.239Z	21.42° NNE	2026-08-31 01:40:56.239Z	91.581° ESE	42.189°	2026-08-31 01:45:56.239Z	184.432° SSW
5 mins	2026-08-31 03:22:56.239Z	324.833° NNW	2026-08-31 03:24:56.239Z	299.63° NW	15.946°	2026-08-31 03:27:56.239Z	264.843° W
9 mins	2026-08-31 11:44:56.239Z	114.685° SE	2026-08-31 11:48:56.239Z	63.127° ENE	27.826°	2026-08-31 11:53:56.239Z	6.156° NNE
10 mins	2026-08-31 13:27:56.239Z	194.621° SSW	2026-08-31 13:32:56.239Z	260.527° W	34.355°	2026-08-31 13:37:56.239Z	326.931° 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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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: 9 hours ago

TLE from 9 hours ago

TLE epoch observation values (Epoch: 2026-08-30T11:11:55.148Z)

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: 9 hours ago