Space Brief 30 Aug 2025
Today's briefing covers the latest satellite communications advancements, a secretive military launch by SpaceX, and new space defense organizational structures.
Launch Date
September 9, 1999
Launch Site
PLMSC
Launch Pad
LC43/4
Launch Vehicle
Soyuz-U-PVB
NORAD ID
25903
International Designator
1999-048B
Decay Date
9/25/1999
Name
SL-4 R/B
Alternative Name
Soyuz-U-PVB No. 082 Blok-I
Type
Status
Owner
RVSNR
Country
Russia
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
10.7652
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Payload
11S510
Purpose
Unknown
Mission
Unknown
Manufacturer
PROGT
Life Expectancy
Unknown
Bus
Blok-I
Configuration
Unknown
Motor
Unknown
Equipment
Unknown
Power System
Unknown
ADCS
Unknown
Transmitter Frequency
Unknown
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