Low Earth Orbit (LEO)
The bustling downtown of space: where most satellites operate, communication networks bloom, and the challenges of atmospheric drag and radiation shape our approach to space operations
SL-6 R/B(2) (12827)
COSPAR: 1981-088F | Alt Name: Blok-ML 45-512
Image
Additional Sources
Launch Details
Launch Date
September 11, 1981
Launch Site
PLMSC
Launch Pad
LC43/3
Launch Vehicle
Molniya 8K78M
Orbital Elements
NORAD ID
12827
International Designator
1981-088F
Epoch
Sat, 04 Jul 2026 03:18:46 GMT
Apogee
Calculating...
Perigee
Calculating...
Inclination
62.92°
Right Ascension
355.72°
Eccentricity
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Argument of Perigee
240.16°
Period
262.37 min
Mean Motion
5.49 rev/day
Latitude
Calculating...
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-ML 45-512
Type
Rocket Body
Status
Space Junk
Owner
RVSN
Country
USSR
Constellation
N/A
Related Satellites
Major Events
N/A
Latest TLEs
1 12827U 81088F 26185.13803951 -.00000023 00000-0 70262-4 0 9994
2 12827 62.9169 355.7178 4815412 240.1577 63.7262 5.48841130898096
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
2.7
Diameter
2.5
Span
2.7
Dry Mass
900
Launch Mass
5000
Shape
Cyl
Radar Cross Section
5.6709
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Technical Details
Payload
Blok-ML No. 76745-512
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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