X Report 6 Apr 2025
SpaceX's Fram2 mission lands in the Pacific, SpaceX secures U.S. military contracts, and Starlink expands with latest satellite launch.
SIRIUS W (MARCOPOLO 1) (20193)
COSPAR: 1989-067A | Alt Name: Marcopolo 1
Image
Additional Sources
Launch Details
Launch Date
August 27, 1989
Launch Site
Launch Pad
LC17B
Launch Vehicle
Delta 4925-8
Orbital Elements
NORAD ID
20193
International Designator
1989-067A
Epoch
Fri, 03 Jul 2026 23:29:38 GMT
Apogee
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Perigee
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Inclination
14.83°
Right Ascension
0.24°
Eccentricity
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Argument of Perigee
54.43°
Period
1451.86 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
SIRIUS W (MARCOPOLO 1)
Alternative Name
Marcopolo 1
Type
Payload
Status
Unknown
Owner
BSB
Country
United Kingdom
Constellation
N/A
Related Satellites
Major Events
N/A
Latest TLEs
1 20193U 89067A 26184.97891840 -.00000022 00000-0 00000-0 0 9997
2 20193 14.8324 0.2387 0005678 54.4312 306.1650 0.99183097 46988
Source: Celestrak
Summary
SIRIUS W (also known as MARCOPOLO 1) is a communication satellite operated by BSB for direct broadcasting purposes. It was launched on August 27, 1989, from the AFETR launch site using the Delta 4925-8 vehicle and LC17B launch pad. The satellite has a cylindrical shape with dimensions of 7.2 meters in length and diameter, and spans 7.2 meters. It weighs approximately 690 kilograms at launch and carries five Ku-band transponders for its payload BSB R1. Its dry mass is about 500 kilograms, and it is powered by solar cells mounted on the body and a drop-skirt, along with batteries. The satellite was manufactured by HSES in the UK and has an RCS of 2.
Physical Characteristics
Length
7.2
Diameter
2.2
Span
7.2
Dry Mass
500
Launch Mass
690
Shape
Cyl
Radar Cross Section
2
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Technical Details
Payload
BSB R1
Purpose
Communication (Direct broadcasting)
Mission
Communication (Direct broadcasting)
Manufacturer
HSES
Life Expectancy
Unknown
Bus
HS-376
Configuration
HS-376
Motor
TE-M-700-17
Equipment
5 Ku-band transponders
Power System
Solar cells (body mounted and drop-skirt), 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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