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INMARSAT 2-F1 (20918)
COSPAR: 1990-093A | Alt Name: INMARSAT II F-1
Image
Additional Sources
Launch Details
Launch Date
October 30, 1990
Launch Site
Launch Pad
LC17B
Launch Vehicle
Delta 6925
Orbital Elements
NORAD ID
20918
International Designator
1990-093A
Epoch
Sat, 04 Jul 2026 05:17:10 GMT
Apogee
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Perigee
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Inclination
13.04°
Right Ascension
6.28°
Eccentricity
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Argument of Perigee
15.89°
Period
1456.32 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-F1
Alternative Name
INMARSAT II F-1
Type
Payload
Status
Non-operational
Owner
INMAR
Country
INMARSAT
Constellation
N/A
Related Satellites
Major Events
N/A
Latest TLEs
1 20918U 90093A 26185.22026400 -.00000221 00000-0 00000-0 0 9995
2 20918 13.0431 6.2752 0007981 15.8914 329.1876 0.98879304 47688
Source: Celestrak
Summary
INMARSAT 2-F1 is a communication satellite, also known as INMARSAT II F-1, launched on October 30, 1990, from the Cape Canaveral Air Force Station Launch Complex 17B using a Delta 6925 launch vehicle. It reached stable orbit by October 31, 1990. The satellite is based on the Eurostar-1000 configuration with dimensions of 2 meters in length, 1.5 meters in diameter, and spans 14.9 meters. It has a dry mass of 624 kilograms and weighed 1310 kilograms at launch. INMARSAT 2-F1 is equipped with two deployable solar arrays and batteries for power supply, and its equipment includes four (+2) L-band transponders and one (+1) C-band transponder. The satellite's manufacturer is BAES/MMST and it was operated by INMAR for communication purposes. Its operational lifetime was projected to be 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
25.1189
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Technical Details
Payload
INMARSAT II F-1
Purpose
Communication
Mission
Communication
Manufacturer
BAES/MMST
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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