Space Brief 27 Jul 2025
Busy activities in space: SpaceX's series of Starlink launches dominate the week, while Vega C successfully deploys Earth science satellites.
SL-12 PLAT (11275)
COSPAR: 1979-015C | Alt Name: Perekhodnik
DECAYED
Image
Additional Sources
Launch Details
Launch Date
February 21, 1979
Launch Site
Launch Pad
LC200/40
Launch Vehicle
Proton-K/DM
Orbital Elements
NORAD ID
11275
International Designator
1979-015C
Decay Date
2/22/1979
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.
Space Brief 10 Feb 2025
Discover today's key space events: SpaceX's Starlink launch, rocket debris risks, and advancements in nuclear rocket technology.
X Report 7 Sep 2025
SpaceX launches 24 Starlink satellites, pushing its 2025 total beyond 2,000, while facing community pushback in Florida for its Starship operations.
X Report 20 Feb 2025
SpaceX and Rocket Lab make headlines with simultaneous launches, while Musk's Starliner comments stir controversy.
Space Force Awards Orbital AMTI to 9 Companies | KeepTrack Space Brief
Space Force confirmed 9 companies won orbital Air Moving Target Indication contracts. Capability shifts airborne surveillance to satellites for expanded coverage and survivability.
Space Brief 24 Nov 2024
Today's briefing covers Blue Origin's New Glenn nearing its first launch, SpaceX's 400th Falcon 9 mission with Starlink satellites, advancements in space-based weather prediction, and more.
Vulcan Set to Open 2026 With USSF-87 National Security Launch | KeepTrack Space Brief
ULA's Vulcan rocket preps for USSF-87 national security launch to open 2026. Sierra Space delivers SDA Tranche 2 satellites three months early. NASA delays spacewalk for Crew-11 medical issue.
X Report 27 Sep 2025
SpaceX continues to make strides in both its Starship program and Starlink satellite deployments, with a successful launch of 24 Starlink satellites and preparations for upcoming missions.