|Names||Hellas Sat 4, SaudiGeoSat-1, Saudi Geostationary Satellite 1, HS-4/SGS-1|
|Operator||KACST, Hellas Sat|
|Launch mass||6,495 kilograms (14,319 lb)|
|Start of mission|
|Launch date||21:01:00, 5 February 2019 (UTC)|
|Rocket||Ariane flight VA247|
|Launch site||ELA-3, Guiana Space Centre|
|Altitude||geosynchronous (≈35786 km)|
SaudiGeoSat 1/HellasSat 4, also known as HellasSat 4/SaudiGeoSat 1 (abbreviated HS-4/SGS-1), is a Saudi and Greek geosynchronous communication satellite of KACST and Hellas Sat. It was built by Lockheed Martin and was launched on 5 February 2019 on board Ariane flight VA247.
The satellite will provide telecommunications capabilities, including television, Internet, telephone and secure communications in the Middle East, South Africa and Europe. It is the 16th Saudi satellite launched into space and the 4th Greek and Cypriot satellite.
Launch and Specification
The satellite weighted 6,495 kilograms (14,319 lb) fully fuelled for launch, and it was placed into a geostationary transfer orbit. It will maintain a geosynchronous orbit at 39° East longitude.
- "Ariane Flight VA247". Arianespace. Retrieved 5 February 2019.
- "Saudi Arabia to launch 16th satellite into space". Arab News. 5 February 2019. Retrieved 5 February 2019.
- Lockheed Martin Completes Hellas-Sat-4/SaudiGeoSat-1 Satellite Assembly and Ships to Environmental Testing. Lockheed Martin - Press release. 30 November 2017.
- Clark, Stephen. "Live coverage: Ariane 5 set to launch satellites for Saudi Arabia and India – Spaceflight Now". Retrieved 5 February 2019.
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