The Rise of Super Heavy-Lift Rockets
Super heavy-lift rockets are the most powerful launch vehicles ever built. They can send humans and cargo to the Moon, Mars, and beyond. But what are they, and why are they so important?
RESURS F-6 DEB (20654)
COSPAR: 1990-047D | Alt Name: KDU
DECAYED
Image
Additional Sources
Launch Details
Launch Date
May 29, 1990
Launch Site
PLMSC
Launch Pad
LC43/4
Launch Vehicle
Soyuz-U
Orbital Elements
NORAD ID
20654
International Designator
1990-047D
Decay Date
7/7/1990
Basic Satellite Info
Name
RESURS F-6 DEB
Alternative Name
KDU
Type
Debris
Status
Space Junk
Owner
UNKS
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
0.59
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.
Who Owns the Most Satellites Orbiting Earth?
Uncover the top companies dominating the satellite industry. From SpaceX to One Web, learn who's leading in space assets. Full list inside.
Space Brief 10 Nov 2025
Today's brief covers China's record-breaking launch year, SpaceX's continued Starlink deployments, Blue Origin's launch challenges, and innovations in satellite maneuverability.
X Report 27 Nov 2024
SpaceX secures FCC nod for Starlink's direct-to-phone connectivity, lands NASA's Dragonfly mission, and sees new competition with the ZhuQue-2E launch.
B1067 Flies Record 36th Mission on Starlink 10-42 | KeepTrack X Report
Booster B1067 sets a new Falcon 9 reuse record on its 36th flight, lifting Starlink 10-42 from Cape Canaveral at 5:25 a.m. EDT.
X Report 4 Aug 2025
SpaceX achieves significant milestones with the launch of 28 Starlink satellites and the final landing of the LZ-1 pad, marking key moments in their ongoing mission to expand satellite connectivity.
X Report 24 Mar 2025
SpaceX sets a rocket re-use record, Starlink satellites continue to proliferate, and Botswana launches its first national satellite.
X Report 5 Feb 2025
SpaceX launches Maxar's high-resolution imaging satellites, Ontario reconsiders its Starlink contract, and the countdown to NASA's Lunar Trailblazer mission begins.