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: 14 hours ago

TLE from 14 hours ago

0 DELTA 1 DEB
1 21473U 75052FH  26182.49498924  .00000623  00000-0  72945-3 0  9995
2 21473  99.9219  13.5102 0237771 291.1837 122.7468 13.61351864735214

Epoch: 2026-07-01T11:52Z

TLE epoch observation values (Epoch: 2026-07-01T11:52:47.070Z)

Latitude

55.02307°

Longitude

-98.64084°

Altitude

1,138.01 km

Speed

7.24 km/s

True Right ascension

23h 56m 25s

True Declination

54° 52' 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

13:33:44

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,204.177 km

Perigee altitude

851.98 km

Semi-major axis

7,406.216 km

Eccentricity

0.02378

Inclination

99.9219°

RAAN

13.5102°

Arg. of periapsis

291.1837°

True anomaly

125.00156°

Mean anomaly

122.7468°

Eccentric anomaly

123.87784°

Mean motion

3.40525 °/min

Orbital period

105.72 mins

BSTAR

0.00072945

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

DELTA 1 DEB, 21597 (Decayed)

DELTA 1 DEB, 42655

DELTA 1 DEB, 21343 (Decayed)

DELTA 1 DEB, 21562 (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.
13 mins	2026-07-02 02:17:42.864Z	5.092° NNE	2026-07-02 02:24:42.864Z	279.391° WNW	38.622°	2026-07-02 02:30:42.864Z	218.339° SW
4 mins	2026-07-02 10:45:42.864Z	64.902° ENE	2026-07-02 10:46:42.864Z	55.364° ENE	13.524°	2026-07-02 10:49:42.864Z	28.204° NE
12 mins	2026-07-02 12:24:42.864Z	153.779° SSE	2026-07-02 12:29:42.864Z	93.128° ESE	43.695°	2026-07-02 12:36:42.864Z	348.768° N
6 mins	2026-07-02 14:12:42.864Z	245.905° WSW	2026-07-02 14:14:42.864Z	267.529° W	17.354°	2026-07-02 14:18:42.864Z	306.623° NW
12 mins	2026-07-03 01:15:42.864Z	26.993° NE	2026-07-03 01:20:42.864Z	85.237° E	39.918°	2026-07-03 01:27:42.864Z	179.102° S

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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: 14 hours ago

TLE from 14 hours ago

TLE epoch observation values (Epoch: 2026-07-01T11:52:47.070Z)

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: 14 hours ago