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COSMOS 2128 (21103)
COSPAR: 1991-009D | Alt Name: Kosmos-2128
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
21103
International Designator
1991-009D
Epoch
Sat, 04 Jul 2026 01:53:31 GMT
Apogee
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Perigee
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Inclination
74.03°
Right Ascension
235.49°
Eccentricity
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Argument of Perigee
49.51°
Period
115.02 min
Mean Motion
12.52 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 2128
Alternative Name
Kosmos-2128
Type
Payload
Status
Unknown
Owner
UNKSR
Country
USSR
Constellation
N/A
Related Satellites
Major Events
N/A
Latest TLEs
1 21103U 91009D 26185.07883208 -.00000007 00000-0 56105-4 0 9993
2 21103 74.0284 235.4856 0014392 49.5050 310.7254 12.51925837617356
Source: Celestrak
Summary
COSMOS 2128, also known as Kosmos-2128, is a military communication satellite launched on February 12, 1991, from the Plesetsk Cosmodrome Launch Complex 133/3 using a Kosmos 11K65M launch vehicle. It was manufactured by NPOPM and operated under the Strela-1 11F625 configuration with a military communication payload designated as Strela-1M Blok 45 No. 4. The satellite has dimensions of 0.8 meters in length, diameter, and span, with both launch mass and dry mass at 60 kilograms. It is equipped with solar cells and batteries for power generation. The satellite's design includes a polyhedral shape with a radar cross-section (RCS) value of 0.6705 square meters. Its operational lifetime was approximately six months.
Physical Characteristics
Length
0.8
Diameter
0.8
Span
0.8
Dry Mass
60
Launch Mass
60
Shape
Poly
Radar Cross Section
0.6705
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Technical Details
Payload
Strela-1M Blok 45 No. 4
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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