DELTA 1 DEB, 8539
Orbit data source: Space-Track
DELTA 1 DEB, 8539 is space debris in SSO originally from a launch on Sun, 23 Jul 1972 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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8539 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, 0.1 m
Radar Cross Section
Small (<0.1 m²)
Expand to show TLE details & historyLast TLE update: 16 hours ago
TLE from 16 hours ago
0 DELTA 1 DEB
1 08539U 72058GN 25293.89573107 .00001353 00000-0 51897-3 0 9993
2 08539 97.2893 348.5445 0198513 299.9450 58.2150 14.21591056720580Epoch: 2025-10-20T21:29Z
TLE epoch observation values (Epoch: 2025-10-20T21:29:51.164Z)
Latitude
-0.00007°
Longitude
-3.51015°
Altitude
749.739 km
Speed
7.518 km/s
True Right ascension
23h 14m 10s
True Declination
0° 00' 00"
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
08:04:46
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
959.903 km
Perigee altitude
674.235 km
Semi-major axis
7,195.206 km
Eccentricity
0.01985
Inclination
97.2893°
RAAN
348.5445°
Arg. of periapsis
299.945°
True anomaly
60.17385°
Mean anomaly
58.215°
Eccentric anomaly
59.19189°
Mean motion
3.55614 °/min
Orbital period
101.23 mins
BSTAR
0.00051897
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Other satellites on launch #58 in the year 1972 (1972-07-23 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. |
|---|---|---|---|---|---|---|---|
| 5 mins | 2025-10-21 15:01:19.659Z | 60.406° ENE | 2025-10-21 15:04:19.659Z | 91.364° ESE | 13.439° | 2025-10-21 15:06:19.659Z | 111.927° ESE |
| 10 mins | 2025-10-21 16:40:19.659Z | 9.498° NNE | 2025-10-21 16:44:19.659Z | 345.093° N | 44.185° | 2025-10-21 16:50:19.659Z | 196.557° SSW |
| 4 mins | 2025-10-22 02:24:19.659Z | 80.49° E | 2025-10-22 02:25:19.659Z | 67.852° E | 16.133° | 2025-10-22 02:28:19.659Z | 31.948° NE |
| 9 mins | 2025-10-22 04:01:19.659Z | 179.763° S | 2025-10-22 04:05:19.659Z | 260.47° W | 42.799° | 2025-10-22 04:10:19.659Z | 342.084° N |
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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