DELTA 1 DEB, 13539
Orbit data source: Space-Track
DELTA 1 DEB, 13539 is space debris in LEO originally from a launch on Thu, 29 Jul 1976 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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13539 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, 1.1 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 13539U 76077EM 25351.25372464 .00000041 00000-0 11727-2 0 9992
2 13539 101.8904 86.0912 0406927 357.4151 24.0718 11.65383875932560Epoch: 2025-12-17T06:05Z
TLE epoch observation values (Epoch: 2025-12-17T06:05:21.808Z)
Latitude
22.96799°
Longitude
-96.47048°
Altitude
1,539.078 km
Speed
7.228 km/s
True Right ascension
05h 23m 59s
True Declination
22° 51' 25"
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
06:11:15
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
2,171.639 km
Perigee altitude
1,503.02 km
Semi-major axis
8,215.466 km
Eccentricity
0.04069
Inclination
101.8904°
RAAN
86.0912°
Arg. of periapsis
357.4151°
True anomaly
26.0658°
Mean anomaly
24.0718°
Eccentric anomaly
25.05933°
Mean motion
2.91471 °/min
Orbital period
123.51 mins
BSTAR
0.0011727
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Other satellites on launch #77 in the year 1976 (1976-07-29 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. |
|---|---|---|---|---|---|---|---|
| 14 mins | 2025-12-19 07:30:08.154Z | 207.056° SW | 2025-12-19 07:36:08.154Z | 258.425° W | 28.644° | 2025-12-19 07:44:08.154Z | 323.935° NNW |
| 19 mins | 2025-12-19 18:22:08.154Z | 34.264° NE | 2025-12-19 18:31:08.154Z | 103.689° ESE | 35.196° | 2025-12-19 18:41:08.154Z | 167.584° S |
| 19 mins | 2025-12-19 20:23:08.154Z | 6.31° NNE | 2025-12-19 20:32:08.154Z | 290.45° WNW | 39.236° | 2025-12-19 20:42:08.154Z | 225.801° WSW |
| 9 mins | 2025-12-19 22:26:08.154Z | 343.239° N | 2025-12-19 22:30:08.154Z | 319.853° NNW | 14.687° | 2025-12-19 22:35:08.154Z | 292.014° WNW |
| 11 mins | 2025-12-20 04:13:08.154Z | 83.56° E | 2025-12-20 04:18:08.154Z | 43.69° NE | 20.341° | 2025-12-20 04:24:08.154Z | 4.022° NNE |
| 16 mins | 2025-12-20 06:10:08.154Z | 159.598° S | 2025-12-20 06:17:08.154Z | 145.988° SSE | 44.96° | 2025-12-20 06:26:08.154Z | 342.831° N |
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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