DELTA 4 R/B, 39169
Orbit data source: Space-Track
DELTA 4 R/B, 39169 is space debris in HEO originally from a launch on Sat, 25 May 2013 UTC launched from the Air Force Eastern Test Range (AFETR). 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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39169 intel report (Beta)
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Identifier
Orbit
Country
USRelated business
Manufacturer
ULA Decatur
Mission
Spacecraft
Bus & Motor
DCSS-5, RL10B-2
Mass
3,450 kg wet, 3,450 kg dry
Launch date (UTC)
Launch vehicle
Unknown
Launch site
Object type
Shape & HBR
Cyl + 1 Nozzle, 6.8 m
Radar Cross Section
64.942 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 1 day ago
TLE from 1 day ago
0 DELTA 4 R/B
1 39169U 13024B 26121.50468115 -.00000412 00000-0 13198-2 0 9992
2 39169 25.0186 45.0805 8245416 357.1813 0.0933 1.10026092 51936Epoch: 2026-05-01T12:06Z
TLE epoch observation values (Epoch: 2026-05-01T12:06:44.451Z)
Latitude
-0.0075°
Longitude
3.91398°
Altitude
485.011 km
Speed
10.3 km/s
True Right ascension
03h 00m 08s
True Declination
0° 00' 27"
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
23:28:29
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
65,944.559 km
Perigee altitude
576.829 km
Semi-major axis
39,638.831 km
Eccentricity
0.82454
Inclination
25.0186°
RAAN
45.0805°
Arg. of periapsis
357.1813°
True anomaly
1.7145°
Mean anomaly
0.0933°
Eccentric anomaly
0.53171°
Mean motion
0.27502 °/min
Orbital period
1,309 mins
BSTAR
0.0013198
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Other satellites on launch #24 in the year 2013 (2013-05-25 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 4 R/B Visibility
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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. |
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| DELTA 4 R/B is likely not visible in the next few days. |
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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