SL-16 R/B, 25861
Orbit data source: Space-Track
SL-16 R/B, 25861 is space debris in SSO originally from a launch on Sat, 17 Jul 1999 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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25861 intel report (Beta)
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Identifier
Orbit
Country
CISRelated business
Manufacturer
Yuzhnoe
Mission
Spacecraft
Bus & Motor
11S772, Unknown motor
Mass
8,300 kg wet, 8,300 kg dry
Launch date (UTC)
Launch vehicle
Unknown
Launch site
Object type
Shape & HBR
Cyl, 5.2 m
Radar Cross Section
37.829 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 1 day ago
TLE from 1 day ago
0 SL-16 R/B
1 25861U 99039B 26153.78382550 .00000575 00000-0 79514-4 0 9994
2 25861 97.9844 212.6871 0014355 346.8033 13.2802 14.81829798449467Epoch: 2026-06-02T18:48Z
TLE epoch observation values (Epoch: 2026-06-02T18:48:42.523Z)
Latitude
-0.00002°
Longitude
39.25809°
Altitude
616.792 km
Speed
7.556 km/s
True Right ascension
14h 10m 44s
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
04:48:32
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
630.643 km
Perigee altitude
610.55 km
Semi-major axis
6,998.734 km
Eccentricity
0.00144
Inclination
97.9844°
RAAN
212.6871°
Arg. of periapsis
346.8033°
True anomaly
13.31805°
Mean anomaly
13.2802°
Eccentric anomaly
13.29912°
Mean motion
3.70693 °/min
Orbital period
97.12 mins
BSTAR
0.000079514
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Other satellites on launch #39 in the year 1999 (1999-07-17 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-16 R/B 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. |
|---|---|---|---|---|---|---|---|
| 7 mins | 2026-06-04 03:21:01.655Z | 136.439° SSE | 2026-06-04 03:25:01.655Z | 62.87° ENE | 30.327° | 2026-06-04 03:28:01.655Z | 9.128° NNE |
| 7 mins | 2026-06-04 16:46:01.655Z | 16.085° NNE | 2026-06-04 16:49:01.655Z | 98.297° ESE | 44.673° | 2026-06-04 16:53:01.655Z | 190.287° SSW |
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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