X Report 20 Nov 2025
SpaceX continues to make strides with its Starship program while successfully launching another batch of Starlink satellites into orbit, enhancing global internet coverage.
SL-12 R/B(2) (15450)
COSPAR: 1984-128B | Alt Name: Blok D-1 No. 12L
DECAYED
Image
Additional Sources
Launch Details
Launch Date
December 21, 1984
Launch Site
Launch Pad
LC200/40
Launch Vehicle
Proton-K/D-1
Orbital Elements
NORAD ID
15450
International Designator
1984-128B
Decay Date
Unknown
Basic Satellite Info
Name
SL-12 R/B(2)
Alternative Name
Blok D-1 No. 12L
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
5.8
Diameter
4.1
Span
5.8
Dry Mass
1925
Launch Mass
14300
Shape
Cyl
Radar Cross Section
Unknown
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Technical Details
Payload
11S824M No. 12L
Purpose
Unknown
Mission
Unknown
Manufacturer
NPOE
Life Expectancy
Unknown
Bus
Blok D
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.
The Bomb That NASA Built by Accident
An overlooked thermostat, eight hours of overheating on a Florida launch pad, and 200,000 miles of coasting through deep space. Then Oxygen Tank No. 2 tore itself apart, and three men had to figure out how to come home alive in a spacecraft designed to land on the Moon.
China's iSpace Raises Record $729M for Reusable Rockets | KeepTrack Space Brief
China's iSpace secures record $729M for reusable rocket development. SpaceX launches Crew-12 and lands booster at new LZ-40 pad. Startup bets on space-based missile defense.
X Report 9 Jul 2025
SpaceX successfully launched 28 Starlink satellites, marking a significant milestone with its 500th orbital mission. Both launches underscore the company's commitment to expanding its satellite internet constellation and solidifying its position in the space industry.
SpaceX Preps Seventh Starlink Launch of 2026 With 25 Satellites | KeepTrack X Report
SpaceX readies Starlink 17-20 launch of 25 satellites to polar orbit from Vandenberg pad 4E — seventh Starlink mission of the year. 11,009 total Starlink satellites launched to date.
Kulasekarapattinam SSLV Launch Complex
India's second spaceport solves a geometry problem. How ISRO is building a dedicated small satellite facility that eliminates the costly dogleg maneuvers plaguing polar launches from Sriharikota.
X Report 23 Oct 2025
SpaceX continues to break records with its Falcon 9 missions while facing public scrutiny from Elon Musk regarding NASA's leadership. Meanwhile, satellite spectrum battles heat up as Lynk Global and Omnispace prepare to merge.
Space Brief 14 May 2025
Today's edition covers China's latest launches in their classified satellite programs, ongoing discussions in the U.S. Senate on missile defense, and the ever-escalating space debris crisis threatening national security.