SpaceX Orbits 7.5-Ton SiriusXM Satellite & 24 Starlinks | KeepTrack X Report
SpaceX completed two launches June 28, orbiting the 15,000-lb SXM-11 satellite and 24 Starlink V2 craft from Vandenberg.
SL-12 R/B(1) (09504)
COSPAR: 1976-107B | Alt Name: Proton-K 290-01 Stage 3
DECAYED
Image
Additional Sources
Launch Details
Launch Date
October 26, 1976
Launch Site
Launch Pad
LC81/24
Launch Vehicle
Proton-K/DM
Orbital Elements
NORAD ID
09504
International Designator
1976-107B
Decay Date
10/29/1976
Explore in the Catalog
Basic Satellite Info
Name
SL-12 R/B(1)
Alternative Name
Proton-K 290-01 Stage 3
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
6.5
Diameter
4.2
Span
6.5
Dry Mass
4185
Launch Mass
4185
Shape
Cyl
Radar Cross Section
Unknown
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Technical Details
Payload
8S812
Purpose
Unknown
Mission
Unknown
Manufacturer
ZIKH
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.
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 Sep 2024
Today’s Space Brief covers a rescued lunar orbiter, a thorough pre-launch check for a Jupiter-bound mission, and leadership changes in a satellite communication company. We also spotlight a recently launched CubeSat and an innovative act of deorbiting.
Space Brief 16 Sep 2025
Today's brief highlights the impact of military spending and technology competition on the space economy, new satellite connectivity partnerships, and defense spending pledges in Europe.
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 25 Dec 2025
Today's highlights include the Pentagon's report on China's military buildup, Innospace's upcoming launch plans, Starlink's rapid growth, China's significant space strides in 2025, and India's successful deployment of BlueBird 6.
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.
Space Brief 27 Apr 2025
Today's highlights include SpaceX's dual Starlink launches, NASA's progress on the Dragonfly mission to Titan, and delays in Starlink's Indian market entry.