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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21548 intel report (Beta)
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Edit Public Description
Identifier
Orbit
Country
USRelated business
Manufacturer
Unknown
Mission
Spacecraft
Bus & Motor
Unknown
Mass
Unknown
Launch date (UTC)
Launch vehicle
Unknown
Launch site
Object type
Shape & HBR
Unknown shape, 0.2 m
Radar Cross Section
Small (<0.1 m²)
Expand to show TLE details & historyLast TLE update: 4 hours ago
TLE from 4 hours ago
0 DELTA 1 DEB
1 21548U 75052HC 25361.82834875 .00000362 00000-0 12271-2 0 9997
2 21548 99.8192 95.1451 0246325 54.8871 62.7357 12.95735628637262Epoch: 2025-12-27T19:52Z
TLE epoch observation values (Epoch: 2025-12-27T19:52:49.332Z)
Latitude
58.51339°
Longitude
-103.28078°
Altitude
1,205.935 km
Speed
7.296 km/s
True Right ascension
19h 25m 53s
True Declination
58° 22' 09"
Sunlit
Visualization orbit readout
Latitude
Unknown
Longitude
Unknown
Altitude
Unknown
Speed
Unknown
Apparent Right ascension
Unknown
Apparent Declination
Unknown
Sunlit
Visualization observer readout
Local Sidereal Time
23:33:52
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,464.768 km
Perigee altitude
1,087.676 km
Semi-major axis
7,654.359 km
Eccentricity
0.02463
Inclination
99.8192°
RAAN
95.1451°
Arg. of periapsis
54.8871°
True anomaly
65.27982°
Mean anomaly
62.7357°
Eccentric anomaly
64.00425°
Mean motion
3.24101 °/min
Orbital period
111.08 mins
BSTAR
0.0012271
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Other satellites on launch #52 in the year 1975 (1975-06-12 UTC)
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You can import UDL-sourced sensor .json files into the Sandbox to generate a visibility chart that accounts for multi-vendor sensor geometry.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. |
|---|---|---|---|---|---|---|---|
| 8 mins | 2025-12-28 04:43:27.167Z | 97.162° ESE | 2025-12-28 04:47:27.167Z | 56.623° ENE | 18.528° | 2025-12-28 04:51:27.167Z | 17.286° NNE |
| 11 mins | 2025-12-28 06:31:27.167Z | 175.145° S | 2025-12-28 06:36:27.167Z | 277.005° WNW | 43.308° | 2025-12-28 06:42:27.167Z | 340.59° N |
| 10 mins | 2025-12-28 18:09:27.167Z | 48.352° ENE | 2025-12-28 18:13:27.167Z | 91.104° ESE | 25.932° | 2025-12-28 18:19:27.167Z | 149.462° SSE |
| 12 mins | 2025-12-28 19:58:27.167Z | 359.858° N | 2025-12-28 20:03:27.167Z | 290.935° WNW | 38.967° | 2025-12-28 20:10:27.167Z | 217.915° SW |
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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