Space Brief 26 Jun 2025
Exploring new defense agreements with Eutelsat, advances in U.S. Space Force projects, and updates on NATO's strategic discussions.
SL-6 R/B(2) (10949)
COSPAR: 1978-055E | Alt Name: Blok-L
Image
Additional Sources
Launch Details
Launch Date
June 2, 1978
Launch Site
PLMSC
Launch Pad
LC43/3
Launch Vehicle
Molniya 8K78M
Orbital Elements
NORAD ID
10949
International Designator
1978-055E
Epoch
Fri, 26 Jun 2026 01:51:34 GMT
Apogee
Calculating...
Perigee
Calculating...
Inclination
63.93°
Right Ascension
232.70°
Eccentricity
Calculating...
Argument of Perigee
276.45°
Period
730.63 min
Mean Motion
1.97 rev/day
Latitude
Calculating...
Longitude
Calculating...
Altitude
Calculating...
Velocity
Calculating...
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 10949U 78055E 26177.07747733 -.00000543 00000-0 16177-2 0 9996
2 10949 63.9325 232.7036 6980329 276.4531 15.0210 1.97090274240342
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
7.3818
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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