BSB 1 --> Sirius 1

United Kingdom

Spacecraft nº:

UK spacecraft nº: 18

BSB= British Satellite Broadcasting - Also called Marco Polo 1

Launch data:

Designation 20193 / 89067A
Launch date27 Aug 1989
Launch site CC, LC-17B
Launch vehicleDelta-4925 (#187)
MissionDirect TV
Geostationary orbit on:

It is the first commercial orbital launch from the U.S.

Stopped transmitting on 31 Dec 1992 and became Sirius 1 in 1994.

Location:

Begin End Position
L: 27 Aug 1989    
Nov 1991 Dec 1992 31°W
1994   see Sirius 1

Specifications:

Prime contractor Hughes
Platform HS-376
Mass at launch 1250 kg
Mass in orbit 660 kg
Payload mass 100 kg: transponders: 90 kg, antennas: 10 kg
Diameter 2.16 m
Height 2.7 m (7.2 m deployed)
Stabilization Spin stabilized
DC power BOL: 1024 W
Design lifetime 10 years
Beacon 12.494 or 12.495 GHz

Equipped with steerable antennas

Ku-band


Main transponders 5 
Backup transponders 1 
Power 2 x 55 W (TWTA)
Bandwidth 27 MHz
Coverage  
EIRP max 59 dBW
Polarization circular R
Frequencies Uplink:17.3-17.6 GHz
Downlink: 11.786-12.091 GHz
Ref.: #7(JR23), #15 - update: 05.08.16 Home