DELTA 1 DEB, 21542
Orbit data source: Space-Track
DELTA 1 DEB, 21542 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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21542 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, 0.1 m
Radar Cross Section
Small (<0.1 m²)
Expand to show TLE details & historyLast TLE update: 3 days ago
TLE from 3 days ago
0 DELTA 1 DEB
1 21542U 75052GW 26239.65244990 .00000145 00000-0 35702-3 0 9994
2 21542 100.2693 121.7580 0048706 207.6326 178.4323 13.38577449722631Epoch: 2026-08-27T15:39Z
TLE epoch observation values (Epoch: 2026-08-27T15:39:31.671Z)
Latitude
25.6634°
Longitude
-93.98058°
Altitude
1,154.037 km
Speed
7.261 km/s
True Right ascension
07h 47m 09s
True Declination
25° 32' 11"
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
10:20:07
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,148.411 km
Perigee altitude
1,075.448 km
Semi-major axis
7,490.067 km
Eccentricity
0.00487
Inclination
100.2693°
RAAN
121.758°
Arg. of periapsis
207.6326°
True anomaly
178.44748°
Mean anomaly
178.4323°
Eccentric anomaly
178.4399°
Mean motion
3.34823 °/min
Orbital period
107.52 mins
BSTAR
0.00035702
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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. |
|---|---|---|---|---|---|---|---|
| 12 mins | 2026-08-31 04:26:42.896Z | 30.632° NE | 2026-08-31 04:32:42.896Z | 98.849° ESE | 33.535° | 2026-08-31 04:38:42.896Z | 167.772° S |
| 10 mins | 2026-08-31 06:13:42.896Z | 353.147° N | 2026-08-31 06:18:42.896Z | 293.017° NW | 29.507° | 2026-08-31 06:23:42.896Z | 237.384° WSW |
| 9 mins | 2026-08-31 14:45:42.896Z | 107.095° ESE | 2026-08-31 14:49:42.896Z | 66.317° ENE | 23.698° | 2026-08-31 14:54:42.896Z | 12.654° NNE |
| 11 mins | 2026-08-31 16:30:42.896Z | 182.968° SSW | 2026-08-31 16:35:42.896Z | 261.511° W | 40.913° | 2026-08-31 16:41:42.896Z | 335.635° 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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