Reentry
What happens when space objects come home: the fiery physics of returning from orbit and why predicting where debris lands is so difficult
FENGYUN 1C DEB (31921)
COSPAR: 1999-025CLY | Alt Name: deb FY-1C
Image
Additional Sources
Launch Details
Launch Date
May 10, 1999
Launch Site
TAISC
Launch Pad
LC7
Launch Vehicle
Chang Zheng 4B
Orbital Elements
NORAD ID
31921
International Designator
1999-025CLY
Epoch
Fri, 03 Jul 2026 15:46:34 GMT
Apogee
Calculating...
Perigee
Calculating...
Inclination
99.33°
Right Ascension
77.89°
Eccentricity
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Argument of Perigee
90.91°
Period
104.67 min
Mean Motion
13.76 rev/day
Latitude
Calculating...
Longitude
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Altitude
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Velocity
Calculating...
Polar Plot
3D Visualization
Basic Satellite Info
Name
FENGYUN 1C DEB
Alternative Name
deb FY-1C
Type
Debris
Status
Space Junk
Owner
CASC
Country
China
Constellation
N/A
Related Satellites
Major Events
N/A
Latest TLEs
1 31921U 99025CLY 26184.65734760 .00001168 00000-0 10739-2 0 9998
2 31921 99.3276 77.8900 0204786 90.9106 271.5513 13.75749352950966
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
0.0071
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Technical Details
Payload
Unknown
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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