Launch Date
September 29, 1972
Launch Site
PLMSC
Launch Pad
LC132/2
Launch Vehicle
Kosmos 11K65M
NORAD ID
06206
International Designator
1972-074A
Epoch
Sat, 04 Jul 2026 03:32:57 GMT
Apogee
Calculating...
Perigee
Calculating...
Inclination
65.83°
Right Ascension
241.27°
Eccentricity
Calculating...
Argument of Perigee
358.18°
Period
104.92 min
Mean Motion
13.73 rev/day
Latitude
Calculating...
Longitude
Calculating...
Altitude
Calculating...
Velocity
Calculating...
Name
COSMOS 521
Alternative Name
Kosmos-521
Type
Status
Owner
PKO
Country
USSR
Constellation
N/A
Related Satellites
Major Events
N/A
1 06206U 72074A 26185.14788811 -.00000061 00000-0 20760-4 0 9991
2 06206 65.8269 241.2711 0005936 358.1821 32.4716 13.72510649693943
Source: Celestrak
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.
Length
1.4
Diameter
1.4
Span
1.4
Dry Mass
643
Launch Mass
643
Shape
Poly
Radar Cross Section
1.358
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Payload
DS-P1-M No. 4L
Purpose
ASAT target
Mission
ASAT target
Manufacturer
YUZH
Life Expectancy
Unknown
Bus
DS-P1
Configuration
Unknown
Motor
None
Equipment
Unknown
Power System
Batteries
ADCS
Unknown
Transmitter Frequency
Unknown
Learn more about satellites and other related topics.
Highlights include China's recent satellite launch, advancements in nuclear propulsion, non-kinetic tech developments for maritime defense, SpaceX's direct-to-device spectrum tests, and maneuvering satellites for Space Force missions.
SpaceX's latest Starlink satellite launch boosts their constellation and Starship development progresses steadily.
SpaceX celebrates significant milestones with its 100th launch of the year, enhancing Starlink's coverage while preparing for an escalating Starship production cadence.
Today's brief covers the U.S. Space Force's orbital carrier initiative, ULA Vulcan's approval for military launches, Rocket Lab's new contract with the Space Force, integrated data layers for military command, and advances in tactical surveillance.
SpaceX and NASA swap Crew Dragon for Crew-10 mission; exciting 'space jellyfish' phenomena from recent launch.
Today's highlights include the U.S. military's satellite initiative facing delays, Senate inquiries into high-profile calls, and an update on Pentagon's UFO investigations. Notable mentions also cover Morocco's defense sector ambitions.
Today's brief covers a reveal from the US Space Force of the X-37B space plane in orbit, a developing defense shakeup involving key military leaders, confirmation of advanced federated ICAM connections by the DoD, and SAAB's plan for a Euro defense coalition. Plus, we spotlight the BDSAT-2 CubeSat.
SpaceX targets July 16 for Starship Flight 13 from Starbase, aiming to fix Flight 12 issues and deploy working Starlink satellites.
