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EXPRESS-A4 (27441)
COSPAR: 2002-029A | Alt Name: Ekspress A1R
Image
Additional Sources
Launch Details
Launch Date
June 10, 2002
Launch Site
Launch Pad
LC200/39
Launch Vehicle
Proton-K/DM-2M
Orbital Elements
NORAD ID
27441
International Designator
2002-029A
Epoch
Fri, 03 Jul 2026 21:34:36 GMT
Apogee
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Perigee
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Inclination
11.70°
Right Ascension
36.32°
Eccentricity
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Argument of Perigee
99.77°
Period
1451.48 min
Mean Motion
0.99 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
EXPRESS-A4
Alternative Name
Ekspress A1R
Type
Payload
Status
Non-operational
Owner
KS
Country
Russia
Constellation
N/A
Related Satellites
Major Events
N/A
Latest TLEs
1 27441U 02029A 26184.89903128 -.00000219 00000-0 00000-0 0 9995
2 27441 11.6995 36.3194 0003666 99.7713 277.9162 0.99208812 87934
Source: Celestrak
Summary
EXPRESS-A4, also known as Ekspress A1R, is a communication satellite with the NORAD catalog ID 27441 and was launched on June 10, 2002, from the TYMSC launch site using LC200/39 pad and Proton-K/DM-2M launch vehicle. The spacecraft has dimensions of 2 meters in length and diameter with a span of 27 meters due to its solar arrays. It weighs 2600 kilograms at launch and 2200 kilograms dry mass, carrying 12 C-transponders and 5 Ku-band transponders for communication purposes. The satellite was manufactured by NPOPMR and is owned by KS. Its mission is to provide communication services using its cylindrical design with two panels and equipped with a deployable solar array system for power generation. The spacecraft has an expected lifetime of 7 years.
Physical Characteristics
Length
2
Diameter
2
Span
27
Dry Mass
2200
Launch Mass
2600
Shape
Cyl + 2 Pan
Radar Cross Section
32.1887
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Technical Details
Payload
Ekspress-A No. 4
Purpose
Communication
Mission
Communication
Manufacturer
NPOPMR
Life Expectancy
7 years
Bus
Ekspress
Configuration
MSS-2500-GSO (MSS-740)
Motor
AOCS
Equipment
12 C-transponders, 5 Ku-band transponders
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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