10 Surprising Facts About SpaceX
Discover lesser-known aspects of SpaceX's history, achievements, and innovations that have shaped the commercial space industry over the past two decades.
COSMOS 2154 (21666)
COSPAR: 1991-059A | Alt Name: Kosmos-2154
Image
Additional Sources
Launch Details
Launch Date
August 22, 1991
Launch Site
PLMSC
Launch Pad
LC132/1
Launch Vehicle
Kosmos 11K65M
Orbital Elements
NORAD ID
21666
International Designator
1991-059A
Epoch
Sat, 04 Jul 2026 05:11:05 GMT
Apogee
Calculating...
Perigee
Calculating...
Inclination
82.91°
Right Ascension
96.75°
Eccentricity
Calculating...
Argument of Perigee
162.20°
Period
104.84 min
Mean Motion
13.74 rev/day
Latitude
Calculating...
Longitude
Calculating...
Altitude
Calculating...
Velocity
Calculating...
Polar Plot
3D Visualization
Basic Satellite Info
Name
COSMOS 2154
Alternative Name
Kosmos-2154
Type
Payload
Status
Unknown
Owner
VMF
Country
USSR
Constellation
N/A
Related Satellites
Major Events
N/A
Latest TLEs
1 21666U 91059A 26185.21604120 .00000080 00000-0 69683-4 0 9997
2 21666 82.9068 96.7453 0025338 162.1988 350.1498 13.73540508747178
Source: Celestrak
Summary
COSMOS 2154 (also known as Kosmos-2154) is a satellite with the OBJECT_ID 1991-059A, configured as KAUR-1 and manufactured by POL for VMF. Launched on August 22, 1991, from LC132/1 at PLMSC using a Kosmos 11K65M launch vehicle, it has dimensions of 5 meters in length, 2.1 meters in diameter, and a span of 17 meters. The satellite's dry mass is 800 kg, the same as its launch mass. Its primary mission involves navigation and data relay operations, powered by solar cells and batteries. Equipped with the Parus No. 604 payload, COSMOS 2154 features a cylindrical shape complemented by antennas, offering a radar cross-section (RCS) of 2.1401 square meters.
Physical Characteristics
Length
5
Diameter
2.1
Span
17
Dry Mass
800
Launch Mass
800
Shape
Cyl + Ant
Radar Cross Section
2.1401
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Technical Details
Payload
Parus No. 604
Purpose
Navigation, data relay
Mission
Navigation, data relay
Manufacturer
POL
Life Expectancy
Unknown
Bus
KAUR-1 11F627
Configuration
KAUR-1
Motor
Unknown
Equipment
Unknown
Power System
Solar cells, batteries
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 13 Aug 2025
Today's Space Brief covers the inaugural national security mission of ULA's Vulcan Centaur, the Space Force's 2026 budget insights, and shifts in military drone technology.
X Report 12 Jun 2025
Today, SpaceX faced delays in launching the Ax-4 mission due to a booster leak, while Starlink made strides towards launching in India with new telecom license approval.
Space Brief 4 Jun 2025
Key developments include China's Shijian 26 satellite launch, U.S. Space Force's BAE Systems contract for missile-tracking satellites, and military advancements in space systems.
Space Brief 15 Aug 2025
Discover the latest in space news with the ULA's recent launch for the US Space Force, significant developments in radar tracking at high altitudes, and impactful policy changes involving military space missions.
X Report 26 Aug 2025
SpaceX's ongoing challenges with the Starship Flight 10 launch are prominent today, as weather and technical issues continue to push back the schedule. Meanwhile, successful cargo missions to the ISS highlight the company's ongoing commitment to space operations.
Space Brief 9 Feb 2025
Today's highlights include Rocket Lab's successful 2025 kick-off launch, SpaceX's upcoming Starlink deployment, and a significant military satellite contract competition.
Pentagon Pulls the Plug on GPS OCX | The $8 Billion Ground System That Never Worked
On April 17, 2026, the U.S. Space Force officially cancelled the Next Generation Operational Control System after sixteen years of development, cost overruns, and testing failures. The $8 billion program was supposed to unlock the military's encrypted GPS signal. Instead, the satellites are flying with capabilities the ground can't command.