BSAT-4b

BSAT-4b, is a geostationary communications satellite ordered by Broadcasting Satellite System Corporation and designed and manufactured by SSL of Maxar Technologies on the SSL 1300 platform. It is expected to be stationed on the 110.0° East orbital latitude for direct television broadcasting of 4K and 8K Ultra HD television resolutions.

Satellite description
BSAT-4b was designed and manufactured by SSL, a subsidiary of Maxar Technologies, on the SSL 1300 satellite bus for Broadcasting Satellite System Corporation. It has an estimated launch mass of 3530 kg with a 15-year design life.

It will have a single Ku-band payload with 24 transponders. It will cover Japan with 4K and 8K Ultra HD television satellite service.

History
On 24 March 2018, B-SAT ordered the second of its fourth generation satellite from SSL, BSAT-4b. It was expected to be weight around 3530 kg, have 24 Ku-band transponders with a 15-year design life. At the time, it was expected for a launch in June 2020. It was to serve as an backup to BSAT-4a, and enter service before the Tokyo 2020 Olympics.

On 19 April 2018, Arianespace was contracted for an Ariane 5 ECA launch service. On 1 July 2020, the satellite was delivered to French Guiana inside a container supplied by RUAG Space

Launch
The satellite was launched on 15 August 2020 at 22:04 UTC.