BSAT-4a
| Mission type | Communication |
|---|---|
| Operator | B-SAT |
| COSPAR ID | 2017-059B |
| SATCAT no. | 42951 |
| Website | B-SAT (Japanese) |
| Spacecraft properties | |
| Spacecraft | BSAT-4a |
| Bus | SSL 1300 |
| Manufacturer | SSL |
| Launch mass | 3.5 t (3.4 long tons; 3.9 short tons) |
| Start of mission | |
| Launch date | 29 September 2017 21:56 UTC[1] |
| Rocket | Ariane 5 ECA |
| Launch site | Guiana Space Center ELA-3 |
| Contractor | Arianespace |
| Orbital parameters | |
| Regime | GEO |
| Longitude | 110° East (Planned) |
| Transponders | |
| Band | 24 Ku band |
BSAT-4a is a geostationary communications satellite ordered by B-SAT and designed and manufactured by SSL on the SSL 1300 platform. It is expected to be stationed on the 110° East orbital slot for direct television broadcasting of 4K and 8K Ultra HD resolutions.[2][3][4]
Satellite description
BSAT-4a was designed and manufactured by SSL on the SSL 1300 satellite bus for B-SAT. It has an estimated launch mass of 3.5 t (3.9 tons) with a 15-year design life.[2][5][4]
It will have a single Ku band payload with 24 transponders. It will cover Japan with 4K and 8K Ultra HD television satellite service.[2][3]
History
On June 18, 2015, B-SAT ordered the first of its fourth generation satellites from SSL, BSAT-4a. It was expected to be weight around 3.5 t (3.9 tons), have 24 Ku band transponders with a 15-year design life. It was launched on September 29, 2017.[1] It was planned, too, that commercial broadcasting of 4K and 8K signals would begin, and have full broadcast of Tokyo 2020 Olympics with that resolution.[3]
On September 14 of the same year, B-SAT contracted Arianespace for an Ariane 5 ECA launch service.[4][2] During the same month of September B-SAT received a preliminary license for broadcasting 4K and 8K Ultra HD.[6]
References
- ^ a b Ariane 5 rocket deploys satellites for Intelsat and B-SAT
- ^ a b c d Krebs, Gunter Dirk (2016-09-06). "BSat 3a, 3b". Gunter's Space Page. Archived from the original on 2016-09-09. Retrieved 2016-09-09.
- ^ a b c "放送衛星3機のスペック" [Specifications of the three broadcasting satellites] (in Japanese). Broadcasting Satellite System Corporation. Archived from the original on 2016-09-09. Retrieved 2016-09-09.
- ^ a b c "Arianespace to launch BSAT-4a, marking its 30th commercial GEO satellite launch contract for Japan". September 14, 2015. Archived from the original on 2016-09-09. Retrieved 2016-09-09.
- ^ "SSL selected to provide direct broadcasting satellite to B-SAT". June 18, 2015. Archived from the original on 2016-09-09. Retrieved 2016-09-09.
- ^ "Milestones". Archived from the original on 2016-09-09. Retrieved 2016-09-09.