Space Brief 29 Dec 2025
Today's highlights include Japan's new military satellite imagery initiative, NASA's SPHEREx map, and AST BlueBird 6's groundbreaking cellular array in low Earth orbit.
Launch Date
March 17, 1981
Launch Site
Launch Pad
LC31
Launch Vehicle
Soyuz-U
NORAD ID
12342
International Designator
1981-026B
Decay Date
3/25/1981
Name
SL-4 R/B
Alternative Name
Soyuz-U 23-468 Blok-I
Type
Status
Owner
RVSN
Country
USSR
Constellation
N/A
Related Satellites
Major Events
N/A
Length
6.7
Diameter
2.7
Span
6.7
Dry Mass
2350
Launch Mass
2350
Shape
Cyl
Radar Cross Section
Unknown
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Payload
11S510
Purpose
Unknown
Mission
Unknown
Manufacturer
PROG
Life Expectancy
Unknown
Bus
Blok-I
Configuration
Unknown
Motor
Unknown
Equipment
Unknown
Power System
Unknown
ADCS
Unknown
Transmitter Frequency
Unknown
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