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O3B FM4 (39189)
COSPAR: 2013-031B | Alt Name: O3b FM4
Image
Additional Sources
Launch Details
Launch Date
June 25, 2013
Launch Site
FRGUI
Launch Pad
ELS
Launch Vehicle
Soyuz-ST-B
Orbital Elements
NORAD ID
39189
International Designator
2013-031B
Epoch
Wed, 01 Jul 2026 13:14:12 GMT
Apogee
Calculating...
Perigee
Calculating...
Inclination
0.04°
Right Ascension
346.20°
Eccentricity
Calculating...
Argument of Perigee
96.60°
Period
287.93 min
Mean Motion
5.00 rev/day
Latitude
Calculating...
Longitude
Calculating...
Altitude
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Velocity
Calculating...
Polar Plot
3D Visualization
Basic Satellite Info
Name
O3B FM4
Alternative Name
O3b FM4
Type
Payload
Status
Operational
Owner
O3B
Country
United Kingdom
Constellation
N/A
Related Satellites
Major Events
N/A
Latest TLEs
1 39189U 13031B 26182.55153905 -.00000018 00000-0 00000-0 0 9990
2 39189 0.0417 346.2021 0005453 96.6045 277.2545 5.00115378237755
Source: Celestrak
Summary
The O3B FM4 satellite, also known as O3b FM4, was launched on June 25, 2013, from the Guiana Space Center using a Soyuz-ST-B launch vehicle. Built by THALR, it has a box trap+2 pan shape and dimensions of 4 meters in length and 2 meters in diameter with a span of 12 meters. It weighs 700 kg at launch and has a dry mass of 500 kg. The satellite is equipped with 12 Ka-Band transponders, two deployable solar arrays, batteries for power storage, and an LS-400 AOCS motor for attitude control. Its mission is communication purposes with a planned lifetime of 10 years.
Physical Characteristics
Length
4
Diameter
2
Span
12
Dry Mass
500
Launch Mass
700
Shape
Box trap+2 pan
Radar Cross Section
80.0833
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Technical Details
Payload
O3b 4
Purpose
Communication
Mission
Communication
Manufacturer
THALR
Life Expectancy
10 years
Bus
Prisma
Configuration
ELiTeBus-1000
Motor
LS-400 AOCS
Equipment
12 Ka-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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