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SL-6 R/B(2) (09921)
COSPAR: 1977-027D | Alt Name: Blok-L
Image
Additional Sources
Launch Details
Launch Date
April 11, 1977
Launch Site
PLMSC
Launch Pad
LC43/3
Launch Vehicle
Molniya 8K78M
Orbital Elements
NORAD ID
09921
International Designator
1977-027D
Epoch
Tue, 30 Jun 2026 23:41:42 GMT
Apogee
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Perigee
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Inclination
72.21°
Right Ascension
136.06°
Eccentricity
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Argument of Perigee
141.70°
Period
723.97 min
Mean Motion
1.99 rev/day
Latitude
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Longitude
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Altitude
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Velocity
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Polar Plot
3D Visualization
Basic Satellite Info
Name
SL-6 R/B(2)
Alternative Name
Blok-L
Type
Rocket Body
Status
Space Junk
Owner
RVSN
Country
USSR
Constellation
N/A
Related Satellites
Major Events
N/A
Latest TLEs
1 09921U 77027D 26181.98729566 .00000182 00000-0 00000-0 0 9995
2 09921 72.2134 136.0624 5296237 141.7003 270.1789 1.98903893357564
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
3.3
Diameter
2.4
Span
3.3
Dry Mass
1000
Launch Mass
4500
Shape
Cyl
Radar Cross Section
5.5274
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Technical Details
Payload
Blok-L
Purpose
Unknown
Mission
Unknown
Manufacturer
NPOE
Life Expectancy
Unknown
Bus
Blok-L
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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