SL-16 DEB, 18550
Orbit data source: Space-Track
SL-16 DEB, 18550 is space debris in LEO originally from a launch on Wed, 18 Mar 1987 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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18550 intel report (Beta)
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Edit Public Description
Identifier
Orbit
Country
CISRelated business
Manufacturer
Yuzhnoe
Mission
Spacecraft
Bus & Motor
SEP MOTOR COVER, Unknown motor
Mass
~0 kg wet, ~1 kg dry
Launch date (UTC)
Launch vehicle
Unknown
Launch site
Object type
Shape & HBR
Unknown shape, 0.1 m
Radar Cross Section
Small (<0.1 m²)
Expand to show TLE details & historyLast TLE update: 7 hours ago
TLE from 7 hours ago
0 SL-16 DEB
1 18550U 87027F 25304.61266418 .00000198 00000-0 20772-3 0 9990
2 18550 71.0235 259.8695 0179668 46.1459 315.4331 13.79208342942463Epoch: 2025-10-31T14:42Z
TLE epoch observation values (Epoch: 2025-10-31T14:42:14.185Z)
Latitude
-0.00004°
Longitude
-0.84421°
Altitude
876.219 km
Speed
7.461 km/s
True Right ascension
17h 19m 28s
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
17:05:21
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,096.579 km
Perigee altitude
832.726 km
Semi-major axis
7,342.79 km
Eccentricity
0.01797
Inclination
71.0235°
RAAN
259.8695°
Arg. of periapsis
46.1459°
True anomaly
313.96501°
Mean anomaly
315.4331°
Eccentric anomaly
314.70141°
Mean motion
3.44946 °/min
Orbital period
104.36 mins
BSTAR
0.00020772
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Other satellites on launch #27 in the year 1987 (1987-03-18 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 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. |
|---|---|---|---|---|---|---|---|
| 8 mins | 2025-10-31 21:47:07.114Z | 160.77° S | 2025-10-31 21:51:07.114Z | 103.553° ESE | 28.412° | 2025-10-31 21:55:07.114Z | 47.089° ENE |
| 8 mins | 2025-10-31 23:34:07.114Z | 247.124° WSW | 2025-10-31 23:38:07.114Z | 309.385° NW | 27.916° | 2025-10-31 23:42:07.114Z | 1.596° NNE |
| 8 mins | 2025-11-01 06:55:07.114Z | 11.637° NNE | 2025-11-01 06:59:07.114Z | 60.466° ENE | 20.926° | 2025-11-01 07:03:07.114Z | 101.843° ESE |
| 11 mins | 2025-11-01 08:41:07.114Z | 327.244° NNW | 2025-11-01 08:46:07.114Z | 236.75° WSW | 41.341° | 2025-11-01 08:52:07.114Z | 172.333° S |
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 ascending order |
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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