X Report 17 Nov 2025
SpaceX successfully launched the Sentinel-6B satellite, marking a significant milestone as its 500th mission with a reused rocket, furthering global sea level monitoring efforts.
COSMOS 881 (09606)
COSPAR: 1976-121A | Alt Name: Kosmos-881
DECAYED
Image
Additional Sources
Launch Details
Launch Date
December 15, 1976
Launch Site
Launch Pad
LC81/24
Launch Vehicle
Proton-K
Orbital Elements
NORAD ID
09606
International Designator
1976-121A
Decay Date
12/15/1976
Basic Satellite Info
Name
COSMOS 881
Alternative Name
Kosmos-881
Type
Payload
Status
Decayed
Owner
ZIKH
Country
USSR
Constellation
N/A
Related Satellites
Major Events
N/A
Summary
Apologies, there is no summary for this satellite yet. I am working to generate these for every object in the catalog, but it is going to take time.
Physical Characteristics
Length
5.9
Diameter
2.8
Span
5.9
Dry Mass
3800
Launch Mass
3800
Shape
Cone + Cyl
Radar Cross Section
Unknown
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Technical Details
Payload
TKS VA No. 009A/1
Purpose
Unknown
Mission
Unknown
Manufacturer
ZIKH
Life Expectancy
Unknown
Bus
TKS VA
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.
STS-51B | Three-Tenths of a Second from Disaster
Forty years ago today, Challenger lifted off LC-39A on a science mission that nobody outside Morton-Thiokol would call dangerous. Years later, after the orbiter and seven other astronauts were gone, investigators looked at the recovered boosters from STS-51B and realized the crew had come within a fraction of a second of dying first. This is the story of the launch that should have been a warning.
Space Brief 28 Sep 2025
Today's highlights include China's latest satellite launches, Blue Origin's expansion plans, and Purdue University's groundbreaking suborbital mission with Virgin Galactic.
SpaceX Hits 50 Launches, Falcon Heavy Scrub, X Report 28 Apr 2026
SpaceX hit 50 launches in 2026 on April 26. Falcon Heavy's ViaSat-3 mission, only its 12th flight, scrubbed on weather at Kennedy; new date pending.
Neil Gehrels Swift Observatory
Designed for a two-year mission to catch gamma-ray bursts in the act, Swift is now 21 years old, slowly falling out of the sky, and the subject of an unprecedented private rescue mission. Nobody planned for it to be this hard to let go.
SpaceX Launches 500th Starlink Satellite of 2026, Microsoft Partnership Announced | KeepTrack X Report
SpaceX launches 500th Starlink satellite of 2026 on 540th reused booster flight. Microsoft partners with Starlink for rural internet expansion. NASA reveals first ISS medical evacuation details.
Starship Flight 12 Debuts Ship V3 as SDA Reorganizes York Space | KeepTrack Space Brief
SpaceX's Starship Flight 12 debuts Ship 39 and Booster 19 on May 19, while York Space faces investor confusion as Space Force reorganizes the Space Development Agency.
SpaceX Starfall Reentry Capsule Debuts, X Report 23 Jun 2026
SpaceX Starfall reentry capsule debuted June 23: the 2,100 kg disk launched on a Falcon 9 from Cape Canaveral to demo cargo return from orbit.