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ITALSAT 1 (21055)
COSPAR: 1991-003A | Alt Name: Italsat 1
Image
Additional Sources
Launch Details
Launch Date
January 15, 1991
Launch Site
FRGUI
Launch Pad
ELA2
Launch Vehicle
Ariane 44L
Orbital Elements
NORAD ID
21055
International Designator
1991-003A
Epoch
Thu, 02 Jul 2026 14:55:52 GMT
Apogee
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Perigee
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Inclination
14.55°
Right Ascension
351.39°
Eccentricity
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Argument of Perigee
56.48°
Period
1440.45 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
ITALSAT 1
Alternative Name
Italsat 1
Type
Payload
Status
Unknown
Owner
ASI
Country
Italy
Constellation
N/A
Related Satellites
Major Events
N/A
Latest TLEs
1 21055U 91003A 26183.62213988 .00000085 00000-0 00000-0 0 9998
2 21055 14.5454 351.3854 0013391 56.4829 296.4817 0.99969071117239
Source: Celestrak
Summary
ITALSAT 1 was launched on January 15, 1991, from Guiana Space Centre using an Ariane 44L launch vehicle for communication purposes. The satellite, manufactured by ALEN and operated by ASI, measures 3.5 meters in length with a diameter of 2.2 meters and a span of 21 meters. It has a dry mass of 950 kilograms and was equipped with 9 (+6) Ka-band transponders (both), a Ka-band propagation beacon (#1), L-band, and Ku-band transponder for communication purposes. The satellite's power system consists of two deployable solar arrays and batteries. ITALSAT 1 has a box shape with two panels and an RCS of 3.4358. Its launch mass was 1865 kilograms and its expected lifetime was 6 years (#1), 8 years (#2).
Physical Characteristics
Length
3.5
Diameter
2.2
Span
21
Dry Mass
950
Launch Mass
1865
Shape
Box + 2 Pan
Radar Cross Section
3.4358
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Technical Details
Payload
Italsat F1
Purpose
Communication
Mission
Communication
Manufacturer
ALEN
Life Expectancy
6 years (#1), 8 years (#2)
Bus
Italsat
Configuration
GeoBus (Italsat Bus)
Motor
R-4D-11
Equipment
9 (+6) Ka-band transponders (both), Ka-band propagation beacon (#1), L-band, Ku-band transponder
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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