Space Brief 12 Nov 2025
Today's brief covers China's ongoing assessments following a potential debris strike on Shenzhou-20, SpaceX's record-breaking Starlink launch, Rocket Lab's delay of the Neutron rocket, and more.
SL-12 R/B(1) (28511)
COSPAR: 2004-053D | Alt Name: Proton-K 410-09 Stage 3
DECAYED
Image
Additional Sources
Launch Details
Launch Date
December 26, 2004
Launch Site
Launch Pad
LC200/39
Launch Vehicle
Proton-K/DM-2
Orbital Elements
NORAD ID
28511
International Designator
2004-053D
Decay Date
12/27/2004
Basic Satellite Info
Name
SL-12 R/B(1)
Alternative Name
Proton-K 410-09 Stage 3
Type
Rocket Body
Status
Space Junk
Owner
KHRR
Country
Russia
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
6.5
Diameter
4.2
Span
6.5
Dry Mass
4185
Launch Mass
4185
Shape
Cyl
Radar Cross Section
30
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Technical Details
Payload
8S812
Purpose
Unknown
Mission
Unknown
Manufacturer
KHRR
Life Expectancy
Unknown
Bus
8S812
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 29 Aug 2025
SpaceX celebrates a record-breaking Falcon 9 launch while Starship demonstrates strong performance in its recent test flight, fueling excitement for upcoming projects.
X Report 25 Dec 2024
SpaceX wraps up a record-breaking year with successful launches and advancements in Starlink mega-constellation.
X Report 7 Oct 2025
SpaceX successfully launched 28 Starlink satellites on October 7, further expanding its broadband constellation while hosting an active launch schedule this week.
Space Brief 8 Jan 2025
Today's highlights include China's launch of the Shijian-25 for on-orbit refueling tests, major Pentagon contracts for solid rocket motors and hypersonic testing, and the US Space Force's record-setting year of launches.
Starship Flight 13 to Deploy First Starlink V3 Sats | KeepTrack X Report
Starship Flight 13 launches first Starlink V3 satellites as SpaceX nears 10,839 working satellites in orbit across the Starlink fleet.
SpaceX Stock Eyed for US Kids' Savings Accounts | KeepTrack X Report
Trump reportedly asked Musk to donate SpaceX equity to seed children's savings accounts as Starlink tops 10,706 working satellites in orbit.
X Report 27 Mar 2025
SpaceX successfully launches 27 Starlink satellites and gains approval for internet services in Vietnam.