X Report 3 Mar 2025
SpaceX gears up for Starship Flight 8, with a launch set for Monday as final preparations are underway.
COSMOS 857 DEB (09449)
COSPAR: 1976-097C | Alt Name: KDU
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
09449
International Designator
1976-097C
Decay Date
10/15/1976
Basic Satellite Info
Name
COSMOS 857 DEB
Alternative Name
KDU
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
1
Diameter
0.4
Span
1
Dry Mass
140
Launch Mass
425
Shape
Frust
Radar Cross Section
Unknown
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Technical Details
Payload
KDU
Purpose
Unknown
Mission
Unknown
Manufacturer
TSSKB
Life Expectancy
Unknown
Bus
Zenit KDU
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.
Musk Confirms Starmind AI Constellation, X Report 24 Jun 2026
Musk confirms Starmind, an AI satellite constellation targeting 1 million orbital compute nodes. Starfall's debut and Dragon's ISS departure follow.
Space Brief 2 Dec 2024
Today's space updates include a new EU space commissioner's priorities, insights from declassified satellite images, and an update on NASA's Europa Clipper mission. A highlight in the Satellite Spotlight features the Russian satellite COSMOS 2070.
X Report 11 Aug 2025
Severe weather conditions disrupt the launch of Amazon’s Project Kuiper satellites, highlighting ongoing challenges in satellite deployment amidst increasing competition in the space industry.
SpaceX Wins $739M for Nine National Security Launches, FCC Adds 7,500 Starlink Sats | KeepTrack Space Brief
SpaceX awarded $739M for nine national security missions. FCC approves 7,500 additional Starlink satellites. NASA announces early Crew-11 return from ISS due to medical issue.
X Report 8 Feb 2025
SpaceX makes strides on Starship launch pad, upcoming Starlink infusions from California and Florida, and regulatory challenges loom with FCC and C-band spectrum.
X Report 23 Dec 2024
SpaceX successfully launches 21 Starlink satellites from Florida, marking another milestone in its satellite internet constellation. The Falcon 9 rocket was also successfully recovered at sea.
Joe Engle and the Youngest Astronaut Wings Ever Earned
On 29 June 1965, a young Air Force test pilot rode a rocket-powered airplane to 280,600 feet above the California desert. He landed ten minutes later as the youngest person ever to earn astronaut wings.