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COSMOS 1287 (12636)
COSPAR: 1981-074A | Alt Name: Kosmos-1287
Image
Additional Sources
Launch Details
Launch Date
August 6, 1981
Launch Site
PLMSC
Launch Pad
LC132/2
Launch Vehicle
Kosmos 11K65M
Orbital Elements
NORAD ID
12636
International Designator
1981-074A
Epoch
Sat, 04 Jul 2026 06:16:14 GMT
Apogee
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Perigee
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Inclination
74.03°
Right Ascension
181.31°
Eccentricity
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Argument of Perigee
343.32°
Period
115.72 min
Mean Motion
12.44 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 1287
Alternative Name
Kosmos-1287
Type
Payload
Status
Unknown
Owner
GUKOS
Country
USSR
Constellation
N/A
Related Satellites
Major Events
N/A
Latest TLEs
1 12636U 81074A 26185.26128367 -.00000026 00000-0 -72901-4 0 9998
2 12636 74.0309 181.3084 0030848 343.3227 16.6804 12.44355342 40557
Source: Celestrak
Summary
COSMOS 1287, also known as Kosmos-1287, is a military communication satellite manufactured by NPOPM and launched on August 6, 1981, from the PLMSC launch site using the Kosmos 11K65M launch vehicle. The satellite was part of the Strela-1 11F625 bus series with dimensions of 0.8 meters in length, diameter, and span. It had a dry mass of 60 kg and was powered by solar cells and batteries. The payload consisted of a Strela-1M Blok 28 No. 1 module designed for military communication purposes. The satellite's shape is described as polyhedral with a radar cross-section (RCS) of 0.6513 m². Launched by GUKOS, COSMOS 1287 had an operational lifetime of approximately 6 months.
Physical Characteristics
Length
0.8
Diameter
0.8
Span
0.8
Dry Mass
60
Launch Mass
60
Shape
Poly
Radar Cross Section
0.6513
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Technical Details
Payload
Strela-1M Blok 28 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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