X Report 26 Dec 2024
Launch of 21 new Starlink satellites, featuring cell phone connectivity, and updates on NASA and SpaceX collaborative missions.
SL-12 R/B(2) (11571)
COSPAR: 1977-092G | Alt Name: Blok DM No. 9L
Image
Additional Sources
Launch Details
Launch Date
September 20, 1977
Launch Site
Launch Pad
LC200/40
Launch Vehicle
Proton-K/DM
Orbital Elements
NORAD ID
11571
International Designator
1977-092G
Epoch
Sat, 04 Jul 2026 04:32:20 GMT
Apogee
Calculating...
Perigee
Calculating...
Inclination
3.49°
Right Ascension
268.87°
Eccentricity
Calculating...
Argument of Perigee
187.16°
Period
1421.76 min
Mean Motion
1.01 rev/day
Latitude
Calculating...
Longitude
Calculating...
Altitude
Calculating...
Velocity
Calculating...
Polar Plot
3D Visualization
Basic Satellite Info
Name
SL-12 R/B(2)
Alternative Name
Blok DM No. 9L
Type
Rocket Body
Status
Space Junk
Owner
RVSN
Country
USSR
Constellation
N/A
Related Satellites
Major Events
N/A
Latest TLEs
1 11571U 77092G 26185.18913009 .00000112 00000-0 00000-0 0 9997
2 11571 3.4860 268.8695 0010013 187.1561 86.9314 1.01282967123122
Source: Celestrak
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
6.3
Diameter
3.7
Span
6.3
Dry Mass
2440
Launch Mass
17200
Shape
Cyl
Radar Cross Section
2.0679
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Technical Details
Payload
11S86 No. 9L
Purpose
Unknown
Mission
Unknown
Manufacturer
NPOE
Life Expectancy
Unknown
Bus
Blok DM
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 26 Aug 2024
Today's briefing covers an exciting new satellite launch, a significant reentry, and unexpected space debris from a fragmentation event.
X Report 26 Nov 2025
This edition highlights SpaceX's ambitious plans for Starship in light of recent developments, a busy launch week featuring multiple missions, and the latest updates on Starlink's operational status.
Space Brief 4 Mar 2025
Today's brief covers the historic lunar touchdown by Firefly Aerospace's Blue Ghost lander, highlights in military space activity, and a reflection on Pearl Young's pioneering legacy at NASA.
Space Brief 13 Jul 2025
Today's Space Brief covers key topics including new defense mandates for space, Firefly Aerospace's public filing, major funding for Varda Space Industries, and updates on SpaceX's Crew-11 mission and a mystery satellite launch.
Space Brief 6 Dec 2024
Today's brief covers various military applications of climate-monitoring satellites, new defense strategies against unmanned threats, and the potential impacts of geopolitical tensions on orbit.
Space Object Catalog
The master ledger of everything orbiting Earth: how tens of thousands of satellites, rocket bodies, and debris fragments are tracked and numbered
X Report 29 Oct 2025
SpaceX embraces community support during Hurricane Melissa while advancing its Starbase infrastructure and launching more Starlink satellites.