Falcon Heavy Returns After 18-Month Hiatus, Lofts ViaSat-3 F3 | KeepTrack X Report
Falcon Heavy completed its 12th flight ever on April 29, ending an 18-month stand-down by lofting the 6-ton ViaSat-3 F3 comsat to GTO.
SL-8 DEB (21164)
COSPAR: 1991-009AB | Alt Name: deb S3M
Image
Additional Sources
Launch Details
Launch Date
February 12, 1991
Launch Site
PLMSC
Launch Pad
LC133/3
Launch Vehicle
Kosmos 11K65M
Orbital Elements
NORAD ID
21164
International Designator
1991-009AB
Epoch
Sat, 04 Jul 2026 05:47:39 GMT
Apogee
Calculating...
Perigee
Calculating...
Inclination
74.05°
Right Ascension
109.23°
Eccentricity
Calculating...
Argument of Perigee
179.67°
Period
117.84 min
Mean Motion
12.22 rev/day
Latitude
Calculating...
Longitude
Calculating...
Altitude
Calculating...
Velocity
Calculating...
Polar Plot
3D Visualization
Basic Satellite Info
Name
SL-8 DEB
Alternative Name
deb S3M
Type
Debris
Status
Space Junk
Owner
RVSN
Country
USSR
Constellation
N/A
Related Satellites
Major Events
N/A
Latest TLEs
1 21164U 91009AB 26185.24143366 .00000020 00000-0 31362-3 0 9994
2 21164 74.0455 109.2263 0125935 179.6666 334.3765 12.22032459574849
Source: Celestrak
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
0.1793
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Technical Details
Payload
Unknown
Purpose
Unknown
Mission
Unknown
Manufacturer
Unknown
Life Expectancy
Unknown
Bus
Unknown
Configuration
Unknown
Motor
Unknown
Equipment
Unknown
Power System
Unknown
ADCS
Unknown
Transmitter Frequency
Unknown
Map
Next Pass
Azimuth Elevation Time (Local)
Start Azimuth
Max Elevation
Stop Azimuth
Time Until
Pass Duration
Satellite Articles
View All Posts »Learn more about satellites and other related topics.
Space Brief 9 Sep 2025
Explore the latest advancements in satellite technology, military satellite applications, and collaborative efforts in hypersonic vehicle tracking. Discover the transformative power of new deals shaping global communication networks.
Why Nobody Can See What Is Happening Near the Moon
The volume of space between Earth and the Moon is roughly a thousand times larger than the orbit we actually watch, and almost none of it is under surveillance. As the U.S. and China race to build lunar outposts, the Space Force is scrambling to put eyes on a region it has been effectively blind to.
NASA Announces First-Ever ISS Medical Evacuation via SpaceX Crew Dragon | KeepTrack X Report
NASA plans first-ever medical evacuation from ISS using SpaceX Crew Dragon for Crew-11 astronaut. Starlink 6-96 mission scrubbed and rescheduled. Starbase Pad 1 tower and launch mount under review.
SpaceX Wins $4.16B Space Force Contract, X Report 3 Jun 2026
SpaceX wins a $4.16 billion Space Force satellite contract to track airborne threats worldwide, while dual-pad launches add 53 Starlink satellites.
The Day the Soviets Built a World in Orbit
Forty years ago today, the USSR launched a 20-ton aluminum cylinder into low Earth orbit and called it 'Peace.' Over the next 15 years, Mir would host 104 people from 12 countries, survive a fire and a collision, and quietly teach humanity how to live in space.
Space Force Awards Pulse Space $40M for Laser Power Tech | KeepTrack Space Brief
Space Force awards Pulse Space $40 million to develop laser systems for transmitting power and data between spacecraft in orbit. Game-changing on-orbit energy transfer capability.
X Report 20 Feb 2025
SpaceX and Rocket Lab make headlines with simultaneous launches, while Musk's Starliner comments stir controversy.