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SL-16 R/B (25861)
COSPAR: 1999-039B | Alt Name: Zenit-2 No. 17L Stage 2
Image
Additional Sources
Launch Details
Launch Date
July 17, 1999
Launch Site
Launch Pad
LC45/1
Launch Vehicle
Zenit-2
Orbital Elements
NORAD ID
25861
International Designator
1999-039B
Epoch
Fri, 03 Jul 2026 21:54:08 GMT
Apogee
Calculating...
Perigee
Calculating...
Inclination
97.98°
Right Ascension
243.73°
Eccentricity
Calculating...
Argument of Perigee
237.19°
Period
97.18 min
Mean Motion
14.82 rev/day
Latitude
Calculating...
Longitude
Calculating...
Altitude
Calculating...
Velocity
Calculating...
Polar Plot
3D Visualization
Basic Satellite Info
Name
SL-16 R/B
Alternative Name
Zenit-2 No. 17L Stage 2
Type
Rocket Body
Status
Space Junk
Owner
RVSNR
Country
Russia
Constellation
N/A
Related Satellites
Major Events
N/A
Latest TLEs
1 25861U 99039B 26184.91259868 .00000588 00000-0 81105-4 0 9991
2 25861 97.9829 243.7275 0013607 237.1917 122.7986 14.81862201454073
Source: Celestrak
Summary
A rocket body, also commonly referred to as an upper stage or spent rocket stage, is the structural shell left behind after a rocket has delivered its payload to orbit. These large and often heavy pieces of space hardware can remain in orbit for years, posing significant collision hazards as part of the growing space debris problem. If left uncontrolled, rocket bodies have the potential to reenter Earth's atmosphere unpredictably, which can lead to falling debris in populated areas. Additionally, they risk colliding with operational satellites or the International Space Station, creating more debris and putting human life at risk.
Physical Characteristics
Length
10.4
Diameter
3.9
Span
10.4
Dry Mass
8300
Launch Mass
9000
Shape
Cyl
Radar Cross Section
12.344
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Technical Details
Payload
11S772
Purpose
Unknown
Mission
Unknown
Manufacturer
YUZHUA
Life Expectancy
Unknown
Bus
11S772
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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