DELTA 1 DEB, 21548

Orbit data source: Space-Track

DELTA 1 DEB, 21548 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/21548?theme=dark&initialShowStats=false

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Identifier

21548, 1975-052HC

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, 0.2 m

Radar Cross Section

Medium (>0.1 m² and <1 m²)

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Last TLE update: 15 hours ago

TLE from 15 hours ago

0 DELTA 1 DEB
1 21548U 75052HC  26242.19594028  .00000280  00000-0  98117-3 0  9992
2 21548  99.8059 314.9711 0246257 222.6181 198.5251 12.95779422669040

Epoch: 2026-08-30T04:42Z

TLE epoch observation values (Epoch: 2026-08-30T04:42:09.240Z)

Latitude

58.92775°

Longitude

-110.54677°

Altitude

1,467.804 km

Speed

7.05 km/s

True Right ascension

19h 53m 32s

True Declination

58° 47' 21"

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

11:35:32

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,464.539 km

Perigee altitude

1,087.559 km

Semi-major axis

7,654.186 km

Eccentricity

0.02463

Inclination

99.8059°

RAAN

314.9711°

Arg. of periapsis

222.6181°

True anomaly

197.65401°

Mean anomaly

198.5251°

Eccentric anomaly

198.08705°

Mean motion

3.24112 °/min

Orbital period

111.07 mins

BSTAR

0.00098117

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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.
9 mins	2026-08-31 02:48:55.406Z	87.227° E	2026-08-31 02:52:55.406Z	56.733° ENE	17.5°	2026-08-31 02:57:55.406Z	17.864° NNE
14 mins	2026-08-31 04:34:55.406Z	155.083° SSE	2026-08-31 04:41:55.406Z	36.659° NE	44.11°	2026-08-31 04:48:55.406Z	348.326° N
10 mins	2026-08-31 06:26:55.406Z	230.513° WSW	2026-08-31 06:31:55.406Z	273.482° WNW	20.965°	2026-08-31 06:36:55.406Z	313.187° NW
8 mins	2026-08-31 16:16:55.406Z	57.453° ENE	2026-08-31 16:19:55.406Z	84.611° E	17.553°	2026-08-31 16:24:55.406Z	130.018° SE
12 mins	2026-08-31 18:04:55.406Z	10.705° NNE	2026-08-31 18:10:55.406Z	264.341° W	44.154°	2026-08-31 18:16:55.406Z	204.137° SW
4 mins	2026-08-31 19:55:55.406Z	332.29° NNW	2026-08-31 19:58:55.406Z	306.566° NW	15.035°	2026-08-31 19:59:55.406Z	297.459° NW

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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, 21548 on other resources

View DELTA 1 DEB, 21548 on Heavens-Above

View DELTA 1 DEB, 21548 on Keep Track

View DELTA 1 DEB, 21548 on Celestrak

View DELTA 1 DEB, 21548 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, 21548

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 15 hours ago

TLE from 15 hours ago

TLE epoch observation values (Epoch: 2026-08-30T04:42:09.240Z)

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, 21548 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 15 hours ago