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EKRAN 4 (11561)
COSPAR: 1979-087A | Alt Name: Ekran
Image
Additional Sources
Launch Details
Launch Date
October 3, 1979
Launch Site
Launch Pad
LC200/40
Launch Vehicle
Proton-K/DM
Orbital Elements
NORAD ID
11561
International Designator
1979-087A
Epoch
Fri, 03 Jul 2026 20:31:32 GMT
Apogee
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Perigee
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Inclination
5.55°
Right Ascension
284.60°
Eccentricity
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Argument of Perigee
189.22°
Period
1436.29 min
Mean Motion
1.00 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
EKRAN 4
Alternative Name
Ekran
Type
Payload
Status
Non-operational
Owner
MSVYAZ
Country
USSR
Constellation
N/A
Related Satellites
Major Events
N/A
Latest TLEs
1 11561U 79087A 26184.85523216 -.00000263 00000-0 00000-0 0 9990
2 11561 5.5527 284.6016 0011261 189.2172 212.2196 1.00258510 47543
Source: Celestrak
Summary
EKRAN 4, also known as Ekran, is a communication and direct broadcasting satellite that was launched on October 3, 1979, from the TYMSC launch site using the Proton-K/DM launch vehicle. With a dry mass of 1850 kg and an initial launch mass of 2000 kg, it has dimensions of 5.5 meters in length and 2.5 meters in diameter, with a span of 9 meters. It was equipped with one UHF 200 W transponder and a C-band uplink for communication purposes. The satellite's power system consists of two deployable solar arrays and batteries. EKRAN 4 had a mission lifetime of approximately three years and was manufactured by NPOPM, owned by MSVYAZ, and its payload was designated as Ekran No. 17L.
Physical Characteristics
Length
5.5
Diameter
2.5
Span
9
Dry Mass
1850
Launch Mass
2000
Shape
Cyl + 2 Pan + Plate
Radar Cross Section
0.1995
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Technical Details
Payload
Ekran No. 17L
Purpose
Communication, direct broadcasting
Mission
Communication, direct broadcasting
Manufacturer
NPOPM
Life Expectancy
3 years
Bus
Ekran
Configuration
KAUR-3
Motor
Unknown
Equipment
1 (+1) UHF 200 W transponder, C-band uplink
Power System
2 deployable 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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