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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Expand to show TLE details & historyLast TLE update: 9 hours ago
TLE from 9 hours ago
0 DELTA 1 DEB
1 13539U 76077EM 26106.17307270 .00000171 00000-0 31015-2 0 9991
2 13539 101.8770 187.7194 0414430 163.1746 226.2913 11.65458271946530Epoch: 2026-04-16T04:09Z
TLE epoch observation values (Epoch: 2026-04-16T04:09:13.481Z)
Latitude
25.58082°
Longitude
-84.66304°
Altitude
2,084.45 km
Speed
6.764 km/s
True Right ascension
12h 07m 52s
True Declination
25° 28' 05"
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
19:52:49
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
2,177.438 km
Perigee altitude
1,496.52 km
Semi-major axis
8,215.116 km
Eccentricity
0.04144
Inclination
101.877°
RAAN
187.7194°
Arg. of periapsis
163.1746°
True anomaly
222.97904°
Mean anomaly
226.2913°
Eccentric anomaly
224.62334°
Mean motion
2.91489 °/min
Orbital period
123.5 mins
BSTAR
0.0031015
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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. |
|---|---|---|---|---|---|---|---|
| 13 mins | 2026-04-16 17:03:30.018Z | 40.214° NE | 2026-04-16 17:10:30.018Z | 99.376° ESE | 26.025° | 2026-04-16 17:16:30.018Z | 149.862° SSE |
| 15 mins | 2026-04-16 19:04:30.018Z | 8.153° NNE | 2026-04-16 19:11:30.018Z | 303.955° NW | 40° | 2026-04-16 19:19:30.018Z | 220.531° SW |
| 4 mins | 2026-04-16 21:09:30.018Z | 328.52° NNW | 2026-04-16 21:10:30.018Z | 321.434° NNW | 12.155° | 2026-04-16 21:13:30.018Z | 300.189° NW |
| 12 mins | 2026-04-17 02:52:30.018Z | 87.412° E | 2026-04-17 02:58:30.018Z | 50.329° ENE | 20.361° | 2026-04-17 03:04:30.018Z | 10.328° NNE |
| 19 mins | 2026-04-17 04:48:30.018Z | 151.803° SSE | 2026-04-17 04:58:30.018Z | 51.354° ENE | 44.381° | 2026-04-17 05:07:30.018Z | 345.54° N |
| 15 mins | 2026-04-17 06:52:30.018Z | 218.568° SW | 2026-04-17 06:59:30.018Z | 262.886° W | 24.522° | 2026-04-17 07:07:30.018Z | 316.459° 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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