DELTA 1 DEB, 21549

Orbit data source: Space-Track

DELTA 1 DEB, 21549 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/21549?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/21549?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

21549, 1975-052HD

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, 1.1 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 21549U 75052HD  26030.95692472  .00000269  00000-0  81218-3 0  9995
2 21549  99.7717  29.5323 0200749 203.5964 184.8505 13.09377026655261

Epoch: 2026-01-30T22:57Z

TLE epoch observation values (Epoch: 2026-01-30T22:57:58.295Z)

Latitude

27.8505°

Longitude

-90.3435°

Altitude

1,380.977 km

Speed

7.099 km/s

True Right ascension

01h 37m 20s

True Declination

27° 43' 12"

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

13:23:57

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,375.518 km

Perigee altitude

1,070.337 km

Semi-major axis

7,601.065 km

Eccentricity

0.02007

Inclination

99.7717°

RAAN

29.5323°

Arg. of periapsis

203.5964°

True anomaly

184.66074°

Mean anomaly

184.8505°

Eccentric anomaly

184.75515°

Mean motion

3.27515 °/min

Orbital period

109.92 mins

BSTAR

0.00081218

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

DELTA 1 DEB, 21522 (Decayed)

DELTA 1 DEB, 21518 (Decayed)

DELTA 1 DEB, 37630 (Decayed)

DELTA 1 DEB, 21321 (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.
12 mins	2026-02-01 12:07:39.810Z	27.869° NE	2026-02-01 12:13:39.810Z	103.05° ESE	37.429°	2026-02-01 12:19:39.810Z	173.164° S
10 mins	2026-02-01 13:56:39.810Z	350.166° N	2026-02-01 14:01:39.810Z	296.599° NW	26.488°	2026-02-01 14:06:39.810Z	244.041° WSW
12 mins	2026-02-01 22:38:39.810Z	121.786° SE	2026-02-01 22:43:39.810Z	70.342° E	32.409°	2026-02-01 22:50:39.810Z	1.114° NNE
13 mins	2026-02-02 00:25:39.810Z	193.328° SSW	2026-02-02 00:31:39.810Z	251.936° W	35.588°	2026-02-02 00:38:39.810Z	329.893° 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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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings

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Check out DELTA 1 DEB, 21549 on other resources

View DELTA 1 DEB, 21549 on Heavens-Above

View DELTA 1 DEB, 21549 on Keep Track

View DELTA 1 DEB, 21549 on Celestrak

View DELTA 1 DEB, 21549 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, 21549

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: 2026-01-30T22:57:58.295Z)

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, 21549 on other resources

Documentation

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