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: 1 day ago
TLE from 1 day ago
0 DELTA 1 DEB
1 08539U 72058GN 26031.36685379 .00000892 00000-0 34402-3 0 9991
2 08539 97.2755 73.2546 0198830 352.5056 7.3165 14.21843790735145Epoch: 2026-01-31T08:48Z
TLE epoch observation values (Epoch: 2026-01-31T08:48:16.167Z)
Latitude
0.00001°
Longitude
170.59537°
Altitude
680.166 km
Speed
7.59 km/s
True Right ascension
04h 53m 01s
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
12:13:56
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
959.26 km
Perigee altitude
673.17 km
Semi-major axis
7,194.352 km
Eccentricity
0.01988
Inclination
97.2755°
RAAN
73.2546°
Arg. of periapsis
352.5056°
True anomaly
7.61398°
Mean anomaly
7.3165°
Eccentric anomaly
7.4645°
Mean motion
3.55677 °/min
Orbital period
101.22 mins
BSTAR
0.00034402
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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. |
|---|---|---|---|---|---|---|---|
| 7 mins | 2026-02-01 14:06:50.351Z | 49.681° ENE | 2026-02-01 14:10:50.351Z | 93.068° ESE | 17.07° | 2026-02-01 14:13:50.351Z | 125.532° SE |
| 10 mins | 2026-02-01 15:46:50.351Z | 3.136° NNE | 2026-02-01 15:50:50.351Z | 305.099° NW | 42.347° | 2026-02-01 15:56:50.351Z | 204.614° SW |
| 5 mins | 2026-02-02 01:30:50.351Z | 89.363° E | 2026-02-02 01:32:50.351Z | 59.378° ENE | 17.216° | 2026-02-02 01:35:50.351Z | 22.498° NNE |
| 8 mins | 2026-02-02 03:08:50.351Z | 192.693° SSW | 2026-02-02 03:11:50.351Z | 242.953° WSW | 35.833° | 2026-02-02 03:16:50.351Z | 335.863° NNW |
Co-orbital & Co-planar RSOs
Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions
Click to sort rows by RSO header in ascending order | Click to sort rows by Country header in ascending order | Click to sort rows by Type header in ascending order | Click to sort rows by Inclination Δ header in ascending order | Click to sort rows by RAAN Δ header in ascending order | Click to sort rows by Coplanar Angle header in ascending order | Click to sort rows by SMA Δ header in ascending order | Click to sort rows by Orbital period header in ascending order | Click to sort rows by <5km Md TCA header in descending order |
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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