DELTA 1 DEB, 21546
Orbit data source: Space-Track
DELTA 1 DEB, 21546 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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21546 intel report (Beta)
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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: 2 days ago
TLE from 2 days ago
0 DELTA 1 DEB
1 21546U 75052HA 26081.13518352 .00001218 00000-0 58362-2 0 9990
2 21546 99.5533 39.0867 0609576 141.1925 240.9840 12.28679795557856Epoch: 2026-03-22T03:14Z
TLE epoch observation values (Epoch: 2026-03-22T03:14:39.856Z)
Latitude
16.04676°
Longitude
168.01312°
Altitude
1,813.102 km
Speed
6.865 km/s
True Right ascension
02h 25m 18s
True Declination
15° 58' 03"
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
04:50:46
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
2,035.83 km
Perigee altitude
1,068.977 km
Semi-major axis
7,930.541 km
Eccentricity
0.06096
Inclination
99.5533°
RAAN
39.0867°
Arg. of periapsis
141.1925°
True anomaly
235.10383°
Mean anomaly
240.984°
Eccentric anomaly
238.0214°
Mean motion
3.07319 °/min
Orbital period
117.14 mins
BSTAR
0.0058362
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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 | 2026-03-24 08:35:21.117Z | 51.184° ENE | 2026-03-24 08:39:21.117Z | 92.257° ESE | 17.916° | 2026-03-24 08:43:21.117Z | 132.73° SE |
| 11 mins | 2026-03-24 10:30:21.117Z | 3.687° NNE | 2026-03-24 10:35:21.117Z | 289.756° WNW | 40.385° | 2026-03-24 10:41:21.117Z | 213.306° SW |
| 14 mins | 2026-03-24 19:46:21.117Z | 124.215° SE | 2026-03-24 19:53:21.117Z | 69.783° E | 31.289° | 2026-03-24 20:00:21.117Z | 3.674° NNE |
| 16 mins | 2026-03-24 21:40:21.117Z | 187.255° SSW | 2026-03-24 21:48:21.117Z | 250.106° W | 37.903° | 2026-03-24 21:56:21.117Z | 333.474° NNW |
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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