Space Brief 10 Jul 2025
Today's highlights include strategic shifts in the defense sector, innovations in solar technology for space, and developments in satellite-related military projects.
SL-12 PLAT (18577)
COSPAR: 1987-096C | Alt Name: Perekhodnik
DECAYED
Image
Additional Sources
Launch Details
Launch Date
November 26, 1987
Launch Site
Launch Pad
LC200/39
Launch Vehicle
Proton-K/DM-2
Orbital Elements
NORAD ID
18577
International Designator
1987-096C
Decay Date
11/27/1987
Basic Satellite Info
Name
SL-12 PLAT
Alternative Name
Perekhodnik
Type
Debris
Status
Space Junk
Owner
RVSN
Country
USSR
Constellation
N/A
Related Satellites
Major Events
N/A
Summary
Space debris, also known as space junk, encompasses all non-functional objects orbiting Earth such as defunct satellites, spent rocket stages, and fragments from collisions or disintegrations. Over time, this debris can accumulate and create an increasingly hazardous environment in orbit. Even tiny fragments, traveling at extremely high velocities, can inflict significant damage on operational satellites and spacecraft. If left unmanaged, the density of debris raises the risk of catastrophic collisions and further fragmentation, compounding the problem and threatening the safety and sustainability of space activities.
Physical Characteristics
Length
4
Diameter
3.7
Span
4
Dry Mass
800
Launch Mass
800
Shape
Cyl
Radar Cross Section
Unknown
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Technical Details
Payload
Sredniy perekhodnik
Purpose
Unknown
Mission
Unknown
Manufacturer
ZIKH
Life Expectancy
Unknown
Bus
Adapter
Configuration
Unknown
Motor
Unknown
Equipment
Unknown
Power System
Unknown
ADCS
Unknown
Transmitter Frequency
Unknown
Satellite Articles
View All Posts »Learn more about satellites and other related topics.
X Report 6 Oct 2025
SpaceX gears up for its 11th Starship test flight, while Starlink expands connectivity through partnerships with T-Mobile, enhancing app functionality beyond cellular coverage.
Pentagon Pauses LEO Constellation as Acquisition Reviews Continue | KeepTrack Space Brief
Pentagon puts LEO constellation layers on hold during acquisition review. SpaceX and xAI join $100M autonomous drone contest. China's Zenk Space completes first stage static fire.
Amazon vs SpaceX and the Battle for the Best Satellite Internet Service
SpaceX and Amazon Are Playing for Keeps to Control Satellite Broadband and Connect the World. But Is There Room for Both in the Orbit?
Space Brief 28 Sep 2025
Today's highlights include China's latest satellite launches, Blue Origin's expansion plans, and Purdue University's groundbreaking suborbital mission with Virgin Galactic.
Space Brief 30 Dec 2025
Today's briefing covers Rocket Lab's plans following a record-breaking year, efforts to recover NASA's MAVEN orbiter, and the potential relocation of space shuttle Discovery.
Space Force Forecasts 25 Extra Heavy-Lift Missions Through 2029 | KeepTrack Space Brief
Space Force projects 25 additional high-energy missions in 2027–2029 window, straining capacity at Vulcan and Falcon Heavy. Capacity constraints will drive military-NASA prioritization debates.
Hypersonica Missile Hits Mach 6 in Norway Flight Test | KeepTrack Space Brief
Hypersonica completes Mach 6+ hypersonic missile flight test in Norway covering 300+ km. Pentagon seeks commercial GEO spy satellites. Gilat wins $9M Israeli defense satcom deal.