Japan's H3 Returns to Flight With 6 Satellites | KeepTrack Space Brief
Japan's H3 rocket successfully launched June 11, deploying 6 smallsats to orbit after December failure. First return-to-flight for JAXA's flagship heavy-lift vehicle.
SL-12 R/B(AUX MOTOR) (13629)
COSPAR: 1982-103D | Alt Name: DM-37L SOZ-1
DECAYED
Image
Additional Sources
Launch Details
Launch Date
October 20, 1982
Launch Site
Launch Pad
LC200/40
Launch Vehicle
Proton-K/DM
Orbital Elements
NORAD ID
13629
International Designator
1982-103D
Decay Date
7/5/1983
Basic Satellite Info
Name
SL-12 R/B(AUX MOTOR)
Alternative Name
DM-37L SOZ-1
Type
Rocket Body
Status
Space Junk
Owner
RVSN
Country
USSR
Constellation
N/A
Related Satellites
Major Events
N/A
Summary
A rocket body, also commonly referred to as an upper stage or spent rocket stage, is the structural shell left behind after a rocket has delivered its payload to orbit. These large and often heavy pieces of space hardware can remain in orbit for years, posing significant collision hazards as part of the growing space debris problem. If left uncontrolled, rocket bodies have the potential to reenter Earth's atmosphere unpredictably, which can lead to falling debris in populated areas. Additionally, they risk colliding with operational satellites or the International Space Station, creating more debris and putting human life at risk.
Physical Characteristics
Length
1.1
Diameter
0.5
Span
1.1
Dry Mass
60
Launch Mass
120
Shape
Cyl
Radar Cross Section
1.49
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Technical Details
Payload
SOZ
Purpose
Unknown
Mission
Unknown
Manufacturer
NPOE
Life Expectancy
Unknown
Bus
SOZ
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.
Boeing Starliner Grounded Until Mid-2027, NASA Warns | KeepTrack Space Brief
Boeing CST-100 Starliner faces up to one year delay before return-to-flight. NASA safety panel cites unresolved technical problems since mid-2024 crewed test.
Transporter 16 Carries 119 Payloads to SSO, X Report 29 Mar 2026
Transporter 16 carries 119 payloads: SpaceX's rideshare mission targets Sun-synchronous orbit from Vandenberg, one of its densest manifests yet.
X Report 5 Apr 2025
SpaceX secures major U.S. military contracts, Fram2 concludes historic mission, and preparations for another Starlink launch.
X Report 25 May 2025
SpaceX addresses the cause of its recent Starship Flight 8 explosion, while successfully launching 23 more Starlink satellites as it continues to expand its constellation.
The Day a Car Started Its Journey to the Stars
Seven years ago, SpaceX revolutionized spaceflight by launching the most powerful operational rocket in the world, carrying with it a cherry-red Tesla Roadster that captured global imagination
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.
B1067 Sets 36-Flight Booster Record on Starlink 10-42 | KeepTrack X Report
Booster B1067 hit 36 flights on July 9, while SpaceX files to expand Starlink to 100,000 satellites at 4,400 lbs each.