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COSMOS 2125 (21100)
COSPAR: 1991-009A | Alt Name: Kosmos-2125
Image
Additional Sources
Launch Details
Launch Date
February 12, 1991
Launch Site
PLMSC
Launch Pad
LC133/3
Launch Vehicle
Kosmos 11K65M
Orbital Elements
NORAD ID
21100
International Designator
1991-009A
Epoch
Sat, 04 Jul 2026 07:02:05 GMT
Apogee
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Perigee
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Inclination
74.03°
Right Ascension
297.71°
Eccentricity
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Argument of Perigee
175.12°
Period
115.20 min
Mean Motion
12.50 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 2125
Alternative Name
Kosmos-2125
Type
Payload
Status
Unknown
Owner
UNKSR
Country
USSR
Constellation
N/A
Related Satellites
Major Events
N/A
Latest TLEs
1 21100U 91009A 26185.29311785 .00000008 00000-0 15861-3 0 9993
2 21100 74.0317 297.7055 0009783 175.1179 213.0218 12.49967004614876
Source: Celestrak
Summary
COSMOS 2125 (also known as Kosmos-2125) is a military communication satellite launched on February 12, 1991, from the PLMSC launch site using the Kosmos 11K65M launch vehicle from Launch Pad LC133/3. The satellite was manufactured by NPOPM and equipped with solar cells and batteries for power supply. It has dimensions of 0.8 meters in length, diameter, and span, with a dry mass and launch mass both at 60 kilograms. Its mission was to provide military communication services and it had a lifetime of approximately six months. The satellite's shape is described as polyhedral and its reflective surface area (RCS) is 0.664 square meters. It was launched under the ownership of UNKSR and carried the Strela-1M Blok 45 No. 1 payload, consistent with its military communication purpose.
Physical Characteristics
Length
0.8
Diameter
0.8
Span
0.8
Dry Mass
60
Launch Mass
60
Shape
Poly
Radar Cross Section
0.664
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Technical Details
Payload
Strela-1M Blok 45 No. 1
Purpose
Military Communication
Mission
Military Communication
Manufacturer
NPOPM
Life Expectancy
6 months
Bus
Strela-1 11F625
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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