Optical Intersatellite Link (OISL)
The laser-based crosslinks that turn Starlink into a mesh, anchor the SDA Transport Layer, and just made their GPS debut on GPS III SV10 - quietly rewriting how data moves through space.
CZ-4B DEB (28442)
COSPAR: 2002-049F | Alt Name: CZ-4B sep motor cover
DECAYED
Image
Additional Sources
Launch Details
Launch Date
October 27, 2002
Launch Site
TAISC
Launch Pad
LC7
Launch Vehicle
Chang Zheng 4B
Orbital Elements
NORAD ID
28442
International Designator
2002-049F
Decay Date
3/31/2010
Basic Satellite Info
Name
CZ-4B DEB
Alternative Name
CZ-4B sep motor cover
Type
Debris
Status
Space Junk
Owner
CNSA
Country
China
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
0.0116
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Technical Details
Payload
Unknown
Purpose
Unknown
Mission
Unknown
Manufacturer
SAST
Life Expectancy
Unknown
Bus
Unknown
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 9 Jan 2025
Exciting advancements from SpaceX as Starshield satellites prepare for launch, Starship Flight 7 faces a short delay, and new Starlink satellites enter orbit.
X Report 8 Nov 2024
SpaceX makes strides with Starship testing while Starlink faces mounting competition as Viasat eyes Telesat's LEO capacity.
X Report 28 Feb 2025
SpaceX postpones Starship Flight 8, successfully launches Starlink satellites and two lunar missions.
Space Brief 21 Dec 2025
Today's briefing highlights the SDA's significant satellite award, Blue Origin's groundbreaking flight, and NASA's call for an Artemis review.
X Report 18 Sep 2025
SpaceX gears up for a busy week with new Starship testing and enhanced Starlink capabilities on the horizon.
The Pentagon's Mystery Spaceplane Takes Off
On April 22, 2010, an Atlas V lifted off from Cape Canaveral carrying a reusable robotic spaceplane so secret that the Air Force would not even confirm its mission duration. It came back 224 days later, lighter, quieter, and more operational than anyone outside Washington had expected. Fifteen years later, the X-37B is still flying, and the military still will not say what it does.
SpaceX Lofts 45 Payloads Including Korean CAS500-2 | KeepTrack X Report
SpaceX's Falcon 9 rideshare lifted 45 satellites including South Korea's CAS500-2 Earth observer from Vandenberg at 0700 UTC May 3.