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SL-12 DEB (21657)
COSPAR: 1987-036M | Alt Name: deb SOZ
Image
Additional Sources
Launch Details
Launch Date
April 24, 1987
Launch Site
Launch Pad
LC200/40
Launch Vehicle
Proton-K/DM-2
Orbital Elements
NORAD ID
21657
International Designator
1987-036M
Epoch
Sat, 15 Nov 2025 01:48:00 GMT
Apogee
Calculating...
Perigee
Calculating...
Inclination
64.84°
Right Ascension
307.95°
Eccentricity
Calculating...
Argument of Perigee
351.87°
Period
137.79 min
Mean Motion
10.45 rev/day
Latitude
Calculating...
Longitude
Calculating...
Altitude
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Velocity
Calculating...
Polar Plot
3D Visualization
Basic Satellite Info
Name
SL-12 DEB
Alternative Name
deb SOZ
Type
Debris
Status
Space Junk
Owner
RVSN
Country
USSR
Constellation
N/A
Related Satellites
Major Events
N/A
Latest TLEs
1 21657U 87036M 25318.07500916 .00013246 00000-0 10365+0 0 9992
2 21657 64.8391 307.9472 1613904 351.8711 5.8655 10.45064860112711
Source: Celestrak
Summary
Space debris, also known as space junk, encompasses all non-functional objects orbiting Earth such as defunct satellites, spent rocket stages, and fragments from collisions or disintegrations. Over time, this debris can accumulate and create an increasingly hazardous environment in orbit. Even tiny fragments, traveling at extremely high velocities, can inflict significant damage on operational satellites and spacecraft. If left unmanaged, the density of debris raises the risk of catastrophic collisions and further fragmentation, compounding the problem and threatening the safety and sustainability of space activities.
Physical Characteristics
Length
0
Diameter
0
Span
0
Dry Mass
0
Launch Mass
0
Shape
N/A
Radar Cross Section
0.0147
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Technical Details
Payload
[UNID144] RCS 0.04
Purpose
Unknown
Mission
Unknown
Manufacturer
Unknown
Life Expectancy
Unknown
Bus
Unknown
Configuration
Unknown
Motor
Unknown
Equipment
Unknown
Power System
Unknown
ADCS
Unknown
Transmitter Frequency
Unknown
Map
Next Pass
Azimuth Elevation Time (Local)
Start Azimuth
Max Elevation
Stop Azimuth
Time Until
Pass Duration
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