SaudiGeoSat-1/HellasSat-4

SaudiGeoSat 1/HellasSat 4, also known as SaudiGeoSat 1/HellasSat 4 (abbreviated SGS-1/HS-4), is a Saudi and Greek geostationary communication satellite of King Abdulaziz City for Science and Technology (KACST) and HellasSat. It was built by Lockheed Martin and was launched on 5 February 2019 on board Ariane flight VA247.

SaudiGeoSat 1/HellasSat 4

Names	HellasSat 4, SaudiGeoSat 1, SaudiGeostationarySatellite 1, SGS-1/HS-4
Mission type	Telecommunications
Operator	KACST, Hellas Sat
COSPAR ID	2019-007A
SATCAT no.	44034
Mission duration	15 years (planned)
Spacecraft properties
Bus	A2100
Manufacturer	Lockheed Martin
Launch mass	6495 kg
Start of mission
Launch date	5 February 2019
Rocket	Ariane flight VA247
Launch site	Centre Spatial Guyanais, ELA-3
Contractor	Arianespace
Orbital parameters
Reference system	Geocentric orbit
Regime	Geosynchronous orbit
Longitude	39.0° East

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^[1][2][3] and the 4th Greek and Cypriot satellite.

Manufacturing

SGS-1 satellite was developed, manufactured and tested by Lockheed Martin in collaboration with KACST where 11 Saudi engineers were trained and certified by Lockheed Martin.^[2]

Launch and Specification

Main article: Ariane flight VA247

SGS-1/HS-4 was launched on an Ariane 5 operated by Arianespace from the Centre Spatial Guyanais in French Guiana on Ariane flight VA247.^[1]

The satellite weighted 6,495 kg (14,319 lb) fully fuelled for launch, and it was placed into a geostationary transfer orbit (GTO). It will maintain a geosynchronous orbit at 39.0° East longitude.^[4]