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COSMOS 2158 (21729)
COSPAR: 1991-068B | Alt Name: Kosmos-2158
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
21729
International Designator
1991-068B
Epoch
Sat, 04 Jul 2026 05:47:11 GMT
Apogee
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Perigee
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Inclination
82.59°
Right Ascension
300.23°
Eccentricity
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Argument of Perigee
27.79°
Period
113.92 min
Mean Motion
12.64 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 2158
Alternative Name
Kosmos-2158
Type
Payload
Status
Unknown
Owner
UNKSR
Country
USSR
Constellation
N/A
Related Satellites
Major Events
N/A
Latest TLEs
1 21729U 91068B 26185.24111051 .00000029 00000-0 98588-4 0 9995
2 21729 82.5858 300.2286 0005385 27.7900 352.0524 12.64070469603870
Source: Celestrak
Summary
COSMOS 2158, also known as Kosmos-2158, is a military communication satellite designed and manufactured by NPOPM in SU (Soviet Union). It was launched on September 28, 1991, from the Plesetsk Cosmodrome's LC32/2 launch pad using a Tsiklon-3 launch vehicle. The spacecraft measures 1.6 meters in length and has a diameter of 0.8 meters with an additional span of 7 meters due to its antenna deployment. It weighs 225 kilograms both at launch and dry mass, indicating no significant fuel usage. Powered by solar cells and batteries, the satellite is equipped with the Strela-3 payload for military communication purposes. Its shape consists of a cylinder with attached antennas, and it has a radar cross-section (RCS) value of 1.0662.
Physical Characteristics
Length
1.6
Diameter
0.8
Span
7
Dry Mass
225
Launch Mass
225
Shape
Cyl + Ant
Radar Cross Section
1.0662
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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