SL-4 R/B, 66665 (Decayed)
Orbit data source: Space-Track
SL-4 R/B, 66665 was space debris in LEO originally from a launch on Thu, 27 Nov 2025 UTC launched from the Tyuratam Missile And Space Complex (TTMTR). 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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66665 intel report (Beta)
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Identifier
Orbit
Country
CISRelated business
Manufacturer
TsSKB-Progress
Mission
Decayed spacecraft
Bus & Motor
BLOK-I, RD-0110
Mass
2,350 kg wet, 2,350 kg dry
Launch date (UTC)
Launch vehicle
Unknown
Launch site
Object type
Shape & HBR
Cyl, 8.0 m
Radar Cross Section
21.560 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 7 months ago
TLE from 7 months ago
0 SL-4 R/B
1 66665U 25275B 25333.34681791 .08397088 12512-4 39285-3 0 9993
2 66665 51.6501 207.6669 0004581 68.9636 291.1882 16.43094745 331Epoch: 2025-11-29T08:19Z
TLE epoch observation values (Epoch: 2025-11-29T08:19:25.067Z)
Latitude
-0.00001°
Longitude
14.33611°
Altitude
157.274 km
Speed
7.814 km/s
True Right ascension
13h 50m 40s
True Declination
0° 00' 00"
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
07:18:06
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
161.103 km
Perigee altitude
155.115 km
Semi-major axis
6,536.246 km
Eccentricity
0.00046
Inclination
51.6501°
RAAN
207.6669°
Arg. of periapsis
68.9636°
True anomaly
291.13924°
Mean anomaly
291.1882°
Eccentric anomaly
291.16372°
Mean motion
4.10724 °/min
Orbital period
87.65 mins
BSTAR
0.00039285
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Other satellites on launch #275 in the year 2025 (2025-11-27 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.SL-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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| This satellite is decayed. |
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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