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COSMOS 2157 (21728)
COSPAR: 1991-068A | Alt Name: Kosmos-2157
Image
Additional Sources
Launch Details
Launch Date
September 28, 1991
Launch Site
PLMSC
Launch Pad
LC32/2
Launch Vehicle
Tsiklon-3
Orbital Elements
NORAD ID
21728
International Designator
1991-068A
Epoch
Sat, 04 Jul 2026 06:58:37 GMT
Apogee
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Perigee
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Inclination
82.58°
Right Ascension
306.85°
Eccentricity
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Argument of Perigee
104.49°
Period
113.99 min
Mean Motion
12.63 rev/day
Latitude
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Longitude
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Altitude
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Velocity
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Polar Plot
3D Visualization
Basic Satellite Info
Name
COSMOS 2157
Alternative Name
Kosmos-2157
Type
Payload
Status
Unknown
Owner
UNKSR
Country
USSR
Constellation
N/A
Related Satellites
Major Events
N/A
Latest TLEs
1 21728U 91068A 26185.29071140 .00000032 00000-0 11988-3 0 9995
2 21728 82.5811 306.8547 0006055 104.4930 255.6834 12.63251139602876
Source: Celestrak
Summary
COSMOS 2157, also known as Kosmos-2157, is a military communication satellite launched on September 28, 1991, from the Plesetsk Cosmodrome Launch Complex 32/2 in Russia using the Tsiklon-3 launch vehicle. The spacecraft measures 1.6 meters in length and has a diameter of 0.8 meters with an antenna span of 7 meters. It was manufactured by NPOPM (NPO Mashinostroyeniya) and equipped with solar cells and batteries for power generation, weighing 225 kilograms at launch. The satellite's primary purpose is military communication as part of the Strela-3 bus system. Its shape consists of a cylinder combined with antennas, featuring a radar cross-section (RCS) value of 1.019.
Physical Characteristics
Length
1.6
Diameter
0.8
Span
7
Dry Mass
225
Launch Mass
225
Shape
Cyl + Ant
Radar Cross Section
1.019
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Technical Details
Payload
Strela-3
Purpose
Military Communication
Mission
Military Communication
Manufacturer
NPOPM
Life Expectancy
Unknown
Bus
Strela-3
Configuration
Unknown
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
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