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: 3 days ago
TLE from 3 days ago
0 DELTA 1 DEB
1 13539U 76077EM 25299.24279686 -.00000321 00000-0 -43787-2 0 9998
2 13539 101.8913 42.0010 0408560 82.1281 337.9840 11.65392085926504Epoch: 2025-10-26T05:49Z
TLE epoch observation values (Epoch: 2025-10-26T05:49:37.648Z)
Latitude
56.42819°
Longitude
-98.67206°
Altitude
1,539.547 km
Speed
7.234 km/s
True Right ascension
01h 34m 23s
True Declination
56° 17' 07"
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
19:27:05
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
2,172.94 km
Perigee altitude
1,501.641 km
Semi-major axis
8,215.428 km
Eccentricity
0.04086
Inclination
101.8913°
RAAN
42.001°
Arg. of periapsis
82.1281°
True anomaly
336.14225°
Mean anomaly
337.984°
Eccentric anomaly
337.07206°
Mean motion
2.91473 °/min
Orbital period
123.51 mins
BSTAR
-0.0043787
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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. |
|---|---|---|---|---|---|---|---|
| 15 mins | 2025-10-29 05:44:15.096Z | 129.531° SE | 2025-10-29 05:51:15.096Z | 70.812° E | 35.731° | 2025-10-29 05:59:15.096Z | 354.475° N |
| 14 mins | 2025-10-29 07:46:15.096Z | 199.757° SSW | 2025-10-29 07:53:15.096Z | 264.811° W | 32.046° | 2025-10-29 08:00:15.096Z | 325.371° NNW |
| 14 mins | 2025-10-29 18:38:15.096Z | 42.884° NE | 2025-10-29 18:44:15.096Z | 92.842° ESE | 28.133° | 2025-10-29 18:52:15.096Z | 154.825° SSE |
| 16 mins | 2025-10-29 20:39:15.096Z | 6.691° NNE | 2025-10-29 20:46:15.096Z | 290.887° WNW | 40.44° | 2025-10-29 20:55:15.096Z | 219.433° SW |
| 4 mins | 2025-10-29 22:44:15.096Z | 324.391° NNW | 2025-10-29 22:45:15.096Z | 317.263° NNW | 12.386° | 2025-10-29 22:48:15.096Z | 296.786° NW |
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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