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COSMOS 1857 (18118)
COSPAR: 1987-051F | Alt Name: Kosmos-1857
Image
Additional Sources
Launch Details
Launch Date
June 16, 1987
Launch Site
PLMSC
Launch Pad
LC132/1
Launch Vehicle
Kosmos 11K65M
Orbital Elements
NORAD ID
18118
International Designator
1987-051F
Epoch
Fri, 03 Jul 2026 19:55:15 GMT
Apogee
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Perigee
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Inclination
74.00°
Right Ascension
129.64°
Eccentricity
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Argument of Perigee
141.96°
Period
114.81 min
Mean Motion
12.54 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 1857
Alternative Name
Kosmos-1857
Type
Payload
Status
Unknown
Owner
UNKS
Country
USSR
Constellation
N/A
Related Satellites
Major Events
N/A
Latest TLEs
1 18118U 87051F 26184.83003787 .00000003 00000-0 11958-3 0 9997
2 18118 74.0034 129.6363 0038119 141.9603 218.4153 12.54274285787865
Source: Celestrak
Summary
COSMOS 1857 (also known as Kosmos-1857) is a military communication satellite launched on June 16, 1987, from the PLMSC site using a Kosmos 11K65M launch vehicle. The spacecraft has dimensions of 0.8 meters in length and diameter with a dry mass of 60 kg. It was equipped with solar cells and batteries for power supply and carried a Strela-1M Blok 41 No. 6 payload. Manufactured by NPOPM, COSMOS 1857 had a mission lifetime of approximately 6 months. The satellite's shape is described as polyhedral with an RCS (Radar Cross Section) value of 0.6317. It was operated for military communication purposes and had a launch mass of 60 kg.
Physical Characteristics
Length
0.8
Diameter
0.8
Span
0.8
Dry Mass
60
Launch Mass
60
Shape
Poly
Radar Cross Section
0.6317
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Technical Details
Payload
Strela-1M Blok 41 No. 6
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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