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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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
Medium (>0.1 m² and <1 m²)
Expand to show TLE details & historyLast TLE update: 12 hours ago
TLE from 12 hours ago
0 DELTA 1 DEB
1 13539U 76077EM 26255.64599519 .00000058 00000-0 14471-2 0 9998
2 13539 101.8724 314.3295 0409563 280.3720 240.0860 11.65441014963940Epoch: 2026-09-12T15:30Z
TLE epoch observation values (Epoch: 2026-09-12T15:30:13.984Z)
Latitude
22.99056°
Longitude
-84.78698°
Altitude
2,019.685 km
Speed
6.817 km/s
True Right ascension
09h 17m 41s
True Declination
22° 53' 09"
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
19:40:12
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
2,173.524 km
Perigee altitude
1,500.596 km
Semi-major axis
8,215.197 km
Eccentricity
0.04096
Inclination
101.8724°
RAAN
314.3295°
Arg. of periapsis
280.372°
True anomaly
236.12254°
Mean anomaly
240.086°
Eccentric anomaly
238.09392°
Mean motion
2.91485 °/min
Orbital period
123.51 mins
BSTAR
0.0014471
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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. |
|---|---|---|---|---|---|---|---|
| 9 mins | 2026-09-13 03:12:09.390Z | 31.058° NE | 2026-09-13 03:12:09.390Z | 31.058° NE | 56.756° | 2026-09-13 03:21:09.390Z | 348.701° N |
| 18 mins | 2026-09-13 05:04:09.390Z | 205.751° SW | 2026-09-13 05:12:09.390Z | 267.493° W | 37.242° | 2026-09-13 05:22:09.390Z | 329.306° NNW |
| 20 mins | 2026-09-13 15:58:09.390Z | 29.04° NE | 2026-09-13 16:08:09.390Z | 97.031° ESE | 47.654° | 2026-09-13 16:18:09.390Z | 169.567° S |
| 20 mins | 2026-09-13 17:59:09.390Z | 7.955° NNE | 2026-09-13 18:09:09.390Z | 299.313° NW | 51.871° | 2026-09-13 18:19:09.390Z | 228.872° WSW |
| 9 mins | 2026-09-13 20:03:09.390Z | 344.462° N | 2026-09-13 20:07:09.390Z | 322.513° NNW | 15.389° | 2026-09-13 20:12:09.390Z | 295.389° NW |
| 16 mins | 2026-09-14 01:46:09.390Z | 95.889° ESE | 2026-09-14 01:53:09.390Z | 49.78° ENE | 28.064° | 2026-09-14 02:02:09.390Z | 357.823° 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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