BSAT-3a
| Mission type | Communication |
|---|---|
| Operator | B-SAT |
| COSPAR ID | 2007-036B |
| SATCAT no. | 32019 |
| Website | B-SAT Satellite Fleet |
| Spacecraft properties | |
| Spacecraft | BSAT-3a |
| Bus | A2100 |
| Manufacturer | Lockheed Martin |
| Launch mass | 1,980 kg (4,370 lb) |
| Dry mass | 927 kg (2,044 lb) |
| Dimensions | 3.8 m × 1.9 m × 1.9 m (12.5 ft × 6.2 ft × 6.2 ft) |
| Power | 2.8 kW |
| Start of mission | |
| Launch date | 23:44, August 14, 2007 |
| Rocket | Ariane 5 ECA VA-177 |
| Launch site | Guiana Space Center ELA-3 |
| Contractor | Arianespace |
| Orbital parameters | |
| Regime | GEO |
| Longitude | 110° East |
| Transponders | |
| Band | 8 (plus 4 spares) Ku band |
| TWTA power | 130 Watts |
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BSAT-3a, is a geostationary communications satellite operated by B-SAT which was designed and manufactured by Lockheed Martin on the A2100 platform. It is stationed on the 110° East orbital slot along its companion BSAT-3b and BSAT-3c from where they provide redundant high definition direct television broadcastin across Japan.
BSAT-3a was designed and manufactured by Lockheed Martin on the A2100 satellite bus for B-SAT. It had a launch mass of 1,980 kg (4,370 lb), a dry mass of 927 kg (2,044 lb), and a 13-year design life. As most satellites based on the A2100 platform, it uses a 460 N (100 lbf) LEROS-1C LAE for orbit raising.
It measured 3.8 m × 1.9 m × 1.9 m (12.5 ft × 6.2 ft × 6.2 ft) when stowed for launch. Its dual wing solar panels can generate 2.8 kW of power at the end of its design life, and span 14.65 m (48.1 ft) when fully deployed.
It has a single Ku band payload with 8 active transponders plus four spares with a TWTA output power of 130 Watts.
On April 27, 2005, Lockheed Martin announced that it had been granted by B-SAT an authorization to proceed to the construction of its first third generation broadcasting satellite, BSAT-3a. On May 18, 2005, both companies announced the signature of the definitive contract for the satellite. It would be based on the A2100 platform, sport eight 130Watts Ku band transponders (plus 4 spares), have a design life of 13 years and have a 1.8 kW power generation capability. It was expected launch in the second quarter of 2007 to be co-located at the 110° East orbital position. On June 15, 2005, Arianespace announced that it had been awarded the launch contract for BSAT-3a.
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