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LEASAT 3 (15643)
COSPAR: 1985-028C | Alt Name: Leasat 3
Image
Additional Sources
Launch Details
Launch Date
April 12, 1985
Launch Site
Launch Pad
LC39A
Launch Vehicle
Space Shuttle
Orbital Elements
NORAD ID
15643
International Designator
1985-028C
Epoch
Sat, 04 Jul 2026 01:53:02 GMT
Apogee
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Perigee
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Inclination
11.21°
Right Ascension
306.80°
Eccentricity
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Argument of Perigee
306.98°
Period
1485.10 min
Mean Motion
0.97 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
LEASAT 3
Alternative Name
Leasat 3
Type
Payload
Status
Unknown
Owner
HCI
Country
United States
Constellation
N/A
Related Satellites
Major Events
N/A
Latest TLEs
1 15643U 85028C 26185.07850488 -.00000131 00000-0 00000-0 0 9990
2 15643 11.2058 306.8022 0078133 306.9781 50.1396 0.96963337136779
Source: Celestrak
Summary
LEASAT 3, also known as Leasat 3, is a communication satellite launched by the Space Shuttle from LC39A on April 12, 1985, and became stable in orbit the following day. It has a configuration of HS-381 with dimensions including a length of 4 meters, diameter of 4.3 meters, and span of 6.2 meters. The satellite's dry mass is 1230 kg and it was manufactured by HSES for HCI (owner). LEASAT 3 carries 13 UHF transponders and its payload is Syncom IV-3. It uses solar cells and batteries for power supply, with a motor configuration of R-4D-10 x2. The satellite's shape is cylindrical with antennas and has an RCS of 13.9921. Launched at a mass of 3231 kg from AFETR (Cape Canaveral), it was designed for a communication mission with an expected lifetime of 12 years.
Physical Characteristics
Length
4
Diameter
4.3
Span
6.2
Dry Mass
1230
Launch Mass
3231
Shape
Cyl + Ant
Radar Cross Section
13.9921
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Technical Details
Payload
Syncom IV-3
Purpose
Communication
Mission
Communication
Manufacturer
HSES
Life Expectancy
12 years
Bus
HS-381
Configuration
HS-381
Motor
R-4D-10 x2
Equipment
13 UHF transponders
Power System
Solar cells, 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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