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 src="https://www.satcat.com/sats-embedded/21548?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/21548?theme=dark&initialShowStats=false

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ISO8601 Format

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

Small (<0.1 m²)

Expand to show TLE details & history
Last TLE update: 7 hours ago

TLE from 7 hours ago

0 DELTA 1 DEB
1 21548U 75052HC  26046.22515844 -.00000111  00000-0 -21952-3 0  9995
2 21548  99.8131 139.4215 0245491 303.5275  82.4938 12.95743855643666

Epoch: 2026-02-15T05:24Z

TLE epoch observation values (Epoch: 2026-02-15T05:24:13.689Z)

Latitude

28.40292°

Longitude

-92.21231°

Altitude

1,262.141 km

Speed

7.236 km/s

True Right ascension

08h 56m 19s

True Declination

28° 16' 08"

Sunlit

Object was in full shadow 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

14:39:45

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,464.096 km

Perigee altitude

1,088.283 km

Semi-major axis

7,654.326 km

Eccentricity

0.02455

Inclination

99.8131°

RAAN

139.4215°

Arg. of periapsis

303.5275°

True anomaly

85.29292°

Mean anomaly

82.4938°

Eccentric anomaly

83.89238°

Mean motion

3.24103 °/min

Orbital period

111.08 mins

BSTAR

-0.00021952

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

DELTA 1 DEB, 21672 (Decayed)

DELTA 1 DEB, 35533 (Decayed)

DELTA 1 DEB, 21322 (Decayed)

DELTA 1 DEB, 21673 (Decayed)

DELTA 1 DEB, 21679 (Decayed)

DELTA 1 DEB, 27574 (Decayed)

DELTA 1 DEB, 21683 (Decayed)

DELTA 1 DEB, 21543 (Decayed)

DELTA 1 DEB, 21509 (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.
7 mins	2026-02-15 17:04:12.191Z	62.19° ENE	2026-02-15 17:07:12.191Z	84.569° E	14.103°	2026-02-15 17:11:12.191Z	114.449° SE
15 mins	2026-02-15 18:51:12.191Z	18.988° NNE	2026-02-15 18:58:12.191Z	119.638° SE	44.297°	2026-02-15 19:06:12.191Z	190.65° SSW
11 mins	2026-02-15 20:41:12.191Z	347.363° N	2026-02-15 20:46:12.191Z	305.974° NW	23.333°	2026-02-15 20:52:12.191Z	255.681° W
13 mins	2026-02-16 05:28:12.191Z	142.442° SSE	2026-02-16 05:34:12.191Z	57.998° ENE	40.741°	2026-02-16 05:41:12.191Z	352.774° N
10 mins	2026-02-16 07:19:12.191Z	221.142° SW	2026-02-16 07:24:12.191Z	272.982° WNW	24.306°	2026-02-16 07:29:12.191Z	317.825° 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, 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: 7 hours ago

TLE from 7 hours ago

TLE epoch observation values (Epoch: 2026-02-15T05:24:13.689Z)

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: 7 hours ago