Falcon 9 Lofts 46 Payloads Including CAS500-2 | KeepTrack X Report
SpaceX's third rideshare mission of 2026 delivered South Korea's CAS500-2 imager and 45 secondary payloads to Sun-synchronous orbit on Falcon 9.
COSMOS 857 DEB (09451)
COSPAR: 1976-097E | Alt Name: KDU part
DECAYED
Image
Additional Sources
Launch Details
Launch Date
September 24, 1976
Launch Site
PLMSC
Launch Pad
LC43/3
Launch Vehicle
Soyuz-U
Orbital Elements
NORAD ID
09451
International Designator
1976-097E
Decay Date
10/9/1976
Explore in the Catalog
Basic Satellite Info
Name
COSMOS 857 DEB
Alternative Name
KDU part
Type
Debris
Status
Space Junk
Owner
GUKOSR
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
0
Diameter
0
Span
0
Dry Mass
0
Launch Mass
0
Shape
N/A
Radar Cross Section
Unknown
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Technical Details
Payload
KDU part
Purpose
Unknown
Mission
Unknown
Manufacturer
TSSKB
Life Expectancy
Unknown
Bus
Zenit deb
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 5 Feb 2025
Today's briefing covers strategic military developments including missile defense proposals and board realignments, intertwined with rising space defense exports and autonomous launcher progress.
Pentagon Pulls the Plug on GPS OCX | The $8 Billion Ground System That Never Worked
On April 17, 2026, the U.S. Space Force officially cancelled the Next Generation Operational Control System after sixteen years of development, cost overruns, and testing failures. The $8 billion program was supposed to unlock the military's encrypted GPS signal. Instead, the satellites are flying with capabilities the ground can't command.
Space Brief 23 Nov 2024
Today's highlights include Canada's and Australia's investment in hypersonic defense, China's successful test of an inflatable space module, and Sweden's support of Ukrainian missile and drone production.
X Report 26 Dec 2024
Launch of 21 new Starlink satellites, featuring cell phone connectivity, and updates on NASA and SpaceX collaborative missions.
X Report 14 Dec 2025
On December 14, 2025, SpaceX achieved a significant milestone with its 550th booster landing following the launch of 27 new Starlink satellites, while exploring potential IPO strategies to fund future projects.
X Report 13 Nov 2024
SpaceX launches more Starlink satellites as Starship prepares for full stack testing, amidst Musk's new governmental role.
Space Brief 18 Oct 2024
Explore exciting updates on satellite reentries impacting Earth's atmosphere, China's ambitious space exploration plans, and the latest advancements in the search for extraterrestrial life.