Space Brief 26 Oct 2025
Today's brief covers a new Space Force contract for advanced tracking systems, innovative debris removal strategies, pivotal new satellite launches, and significant updates in air quality tracking from orbit.
STS 39 DEB (CRO-A) (21247)
COSPAR: 1991-031F | Alt Name: CRO-A
DECAYED
Image
Additional Sources
Launch Details
Launch Date
April 28, 1991
Launch Site
Launch Pad
LC39A
Launch Vehicle
Space Shuttle
Orbital Elements
NORAD ID
21247
International Designator
1991-031F
Decay Date
5/13/1991
Basic Satellite Info
Name
STS 39 DEB (CRO-A)
Alternative Name
CRO-A
Type
Debris
Status
Space Junk
Owner
SDIO
Country
United States
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
0.5
Span
2.5
Dry Mass
63
Launch Mass
90
Shape
Cyl + Ant
Radar Cross Section
Unknown
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Technical Details
Payload
CRO-AM
Purpose
Chemical release in orbit
Mission
Chemical release in orbit
Manufacturer
DSI
Life Expectancy
Unknown
Bus
CRO
Configuration
PicoStar
Motor
?
Equipment
?
Power System
Solar cells, batteries.
ADCS
Unknown
Transmitter Frequency
Unknown
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