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INMARSAT 2-F2 (21149)
COSPAR: 1991-018A | Alt Name: INMARSAT II F-2
Image
Additional Sources
Launch Details
Launch Date
March 8, 1991
Launch Site
Launch Pad
LC17B
Launch Vehicle
Delta 6925
Orbital Elements
NORAD ID
21149
International Designator
1991-018A
Epoch
Fri, 03 Jul 2026 22:59:09 GMT
Apogee
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Perigee
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Inclination
12.81°
Right Ascension
9.15°
Eccentricity
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Argument of Perigee
293.31°
Period
1458.63 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
INMARSAT 2-F2
Alternative Name
INMARSAT II F-2
Type
Payload
Status
Non-operational
Owner
INMAR
Country
INMARSAT
Constellation
N/A
Related Satellites
Major Events
N/A
Latest TLEs
1 21149U 91018A 26184.95774775 -.00000091 00000-0 00000-0 0 9999
2 21149 12.8070 9.1478 0002768 293.3120 68.8020 0.98722682 43622
Source: Celestrak
Summary
INMARSAT 2-F2, also known as INMARSAT II F-2, is a communication satellite built by BAES and launched on March 8, 1991, from Cape Canaveral Air Force Station using the Delta 6925 launch vehicle. It has dimensions of 2 meters in length, 1.5 meters in diameter, and a span of 14.9 meters when its solar arrays are deployed. The satellite's dry mass is 624 kilograms with an initial launch mass of 1310 kilograms. Equipped with four L-band transponders (with two backup) and one C-band transponder (plus one backup), it uses a Box + 2 Pan configuration for its mission. Its power system includes two deployable solar arrays and batteries, while the satellite’s motor is R-4D-11. The spacecraft's purpose and mission are focused on communication services. It has an expected lifetime of 10 years.
Physical Characteristics
Length
2
Diameter
1.5
Span
14.9
Dry Mass
624
Launch Mass
1310
Shape
Box + 2 Pan
Radar Cross Section
13.031
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Technical Details
Payload
INMARSAT II F-2
Purpose
Communication
Mission
Communication
Manufacturer
BAES
Life Expectancy
10 years
Bus
Eurostar 1000
Configuration
Eurostar-1000
Motor
R-4D-11
Equipment
4 (+2) L-band transponders, 1 (+1) C-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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