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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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: 1 day ago
TLE from 1 day ago
0 DELTA 1 DEB
1 21546U 75052HA 25353.41879779 .00000391 00000-0 19609-2 0 9997
2 21546 99.5470 327.1925 0616497 328.5906 186.4940 12.28615897546465Epoch: 2025-12-19T10:03Z
TLE epoch observation values (Epoch: 2025-12-19T10:03:04.129Z)
Latitude
25.30108°
Longitude
-87.29558°
Altitude
2,044.433 km
Speed
6.668 km/s
True Right ascension
10h 06m 55s
True Declination
25° 11' 19"
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
10:58:05
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
2,041.61 km
Perigee altitude
1,063.746 km
Semi-major axis
7,930.815 km
Eccentricity
0.06165
Inclination
99.547°
RAAN
327.1925°
Arg. of periapsis
328.5906°
True anomaly
185.752°
Mean anomaly
186.494°
Eccentric anomaly
186.11757°
Mean motion
3.07303 °/min
Orbital period
117.15 mins
BSTAR
0.0019609
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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. |
|---|---|---|---|---|---|---|---|
| 16 mins | 2025-12-20 13:08:15.021Z | 354.333° N | 2025-12-20 13:16:15.021Z | 302.809° NW | 26.022° | 2025-12-20 13:24:15.021Z | 253.781° W |
| 10 mins | 2025-12-20 20:33:15.021Z | 88.893° E | 2025-12-20 20:37:15.021Z | 52.93° ENE | 21.016° | 2025-12-20 20:43:15.021Z | 8.796° NNE |
| 15 mins | 2025-12-20 22:25:15.021Z | 169.263° S | 2025-12-20 22:31:15.021Z | 243.925° WSW | 44.624° | 2025-12-20 22:40:15.021Z | 344.063° N |
| 4 mins | 2025-12-21 00:27:15.021Z | 268.317° W | 2025-12-21 00:28:15.021Z | 276.32° WNW | 12.558° | 2025-12-21 00:31:15.021Z | 298.781° NW |
| 6 mins | 2025-12-21 08:50:15.021Z | 67.914° E | 2025-12-21 08:53:15.021Z | 84.649° E | 12.706° | 2025-12-21 08:56:15.021Z | 101.057° ESE |
| 20 mins | 2025-12-21 10:40:15.021Z | 22.617° NE | 2025-12-21 10:50:15.021Z | 110.268° ESE | 41.51° | 2025-12-21 11:00:15.021Z | 179.406° S |
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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