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SL-12 R/B(2) (15581)
COSPAR: 1985-016F | Alt Name: Blok DM No. 49L
Image
Additional Sources
Launch Details
Launch Date
February 21, 1985
Launch Site
Launch Pad
LC200/39
Launch Vehicle
Proton-K/DM
Orbital Elements
NORAD ID
15581
International Designator
1985-016F
Epoch
Fri, 03 Jul 2026 21:09:31 GMT
Apogee
Calculating...
Perigee
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Inclination
9.62°
Right Ascension
316.21°
Eccentricity
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Argument of Perigee
257.13°
Period
1448.67 min
Mean Motion
0.99 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-12 R/B(2)
Alternative Name
Blok DM No. 49L
Type
Rocket Body
Status
Space Junk
Owner
RVSN
Country
USSR
Constellation
N/A
Related Satellites
Major Events
N/A
Latest TLEs
1 15581U 85016F 26184.88161120 .00000024 00000-0 00000-0 0 9994
2 15581 9.6152 316.2132 0025318 257.1341 105.4739 0.99401428122107
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
6.3
Diameter
3.7
Span
6.3
Dry Mass
2440
Launch Mass
17200
Shape
Cyl
Radar Cross Section
2.5119
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Technical Details
Payload
11S86 No. 49L
Purpose
Unknown
Mission
Unknown
Manufacturer
NPOE
Life Expectancy
Unknown
Bus
Blok DM
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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