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COSMOS 1903 (18701)
COSPAR: 1987-105A | Alt Name: Kosmos-1903
Image
Additional Sources
Launch Details
Launch Date
December 21, 1987
Launch Site
PLMSC
Launch Pad
LC41/1
Launch Vehicle
Molniya 8K78M
Orbital Elements
NORAD ID
18701
International Designator
1987-105A
Epoch
Fri, 26 Jun 2026 02:57:37 GMT
Apogee
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Perigee
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Inclination
69.02°
Right Ascension
193.94°
Eccentricity
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Argument of Perigee
95.09°
Period
717.45 min
Mean Motion
2.01 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 1903
Alternative Name
Kosmos-1903
Type
Payload
Status
Unknown
Owner
PVO
Country
USSR
Constellation
N/A
Related Satellites
Major Events
N/A
Latest TLEs
1 18701U 87105A 26177.12335236 .00000177 00000-0 00000-0 0 9991
2 18701 69.0165 193.9414 4421744 95.0865 315.1902 2.00710482282856
Source: Celestrak
Summary
COSMOS 1903 (also known as Kosmos-1903) is an early warning satellite launched by the Soviet Union on December 21, 1987, from Plesetsk using a Molniya 8K78M launch vehicle. It has dimensions of 4 meters in length and 2 meters in diameter with a span of 5 meters. The satellite weighs 1150 kg dry and had an initial mass at launch of 1250 kg. Its mission is to provide early warning capabilities, equipped with a payload named Oko 73D6 No. 6040. COSMOS 1903 is powered by two deployable fixed solar arrays along with batteries for energy storage and stabilization. The satellite's shape consists of a cylinder plus two panels and has an RCS value of 13.0846. It was manufactured by NPOL/KOMET for the PVO (Soviet Air Defence Forces).
Physical Characteristics
Length
4
Diameter
2
Span
5
Dry Mass
1150
Launch Mass
1250
Shape
Cyl + 2 Pan
Radar Cross Section
13.0846
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Technical Details
Payload
Oko 73D6 No. 6040
Purpose
Early warning
Mission
Early warning
Manufacturer
NPOL/KOMET
Life Expectancy
Unknown
Bus
Oko
Configuration
Unknown
Motor
Unknown
Equipment
Unknown
Power System
2 deployable fixed solar arrays, 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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