# Hellas Sat 3 > geostationary communications satellite **Wikidata**: [Q20055454](https://www.wikidata.org/wiki/Q20055454) **Wikipedia**: [English](https://en.wikipedia.org/wiki/Hellas_Sat_3) **Source**: https://4ort.xyz/entity/hellas-sat-3 ## Summary Hellas Sat 3 is a geostationary communications satellite launched on June 28, 2017. Manufactured by Thales Alenia Space, it provides mobile, fixed, and broadcasting satellite services. The satellite operates in geostationary orbit and has a design life of 15 years. ## Key Facts - **Launch Date:** June 28, 2017, at 21:15 UTC. - **Type:** Geostationary communications satellite. - **Launch Vehicle:** Ariane 5 ECA (flight VA238). - **Manufacturer:** Thales Alenia Space. - **Operators:** Inmarsat and Hellas Sat. - **Design Life:** 15 years. - **Launch Mass:** 5780 kilograms (launch weight). - **NORAD ID:** 42814. - **Services Provided:** Mobile satellite service, fixed-satellite service, and broadcasting-satellite service. - **Spacecraft Bus:** Spacebus-4000C4. ## FAQs ### Q: What is Hellas Sat 3? A: Hellas Sat 3 is a geostationary communications satellite designed for telecommunications. It provides mobile, fixed, and broadcasting satellite services from its orbit. ### Q: When was Hellas Sat 3 launched? A: Hellas Sat 3 was launched on June 28, 2017, at 21:15 UTC. It was carried into space by an Ariane 5 ECA launch vehicle. ### Q: Who manufactured Hellas Sat 3? A: Hellas Sat 3 was manufactured by Thales Alenia Space. The country of origin for the manufacturing is France. ### Q: What services does Hellas Sat 3 provide? A: Hellas Sat 3 provides a range of satellite services, including mobile satellite service, fixed-satellite service, and broadcasting-satellite service. ### Q: What is the expected service life of Hellas Sat 3? A: Hellas Sat 3 has a design life of 15 years. This indicates its intended operational period for providing services. ## Why It Matters Hellas Sat 3 plays a crucial role in global telecommunications infrastructure as a geostationary communications satellite. Its primary significance lies in its ability to provide a comprehensive suite of satellite services, including mobile, fixed, and broadcasting capabilities. This versatility allows it to support a wide range of applications, from maritime and aviation communications to television broadcasting and internet access in remote areas. Operated jointly by Inmarsat and Hellas Sat, it represents a collaborative effort to expand and enhance satellite connectivity. Positioned in geostationary orbit, it offers continuous and reliable coverage over its designated service regions, which is vital for uninterrupted communication. With a robust design life of 15 years, Hellas Sat 3 ensures long-term service provision, making it a sustainable asset for its operators and the countries it serves, notably Greece and Cyprus. Its deployment via an Ariane 5 ECA launch vehicle highlights its status as a high-capacity and technologically advanced satellite, contributing significantly to the digital infrastructure and connectivity needs of its users. ## Notable For - **Dual Operator Status:** Operated by both Inmarsat and Hellas Sat, indicating a shared or multi-purpose mission. - **Comprehensive Service Provision:** Capable of delivering mobile satellite service, fixed-satellite service, and broadcasting-satellite service. - **Specific Launch Vehicle:** Launched by an Ariane 5 ECA (flight VA238), a powerful European launch vehicle. - **Advanced Spacecraft Bus:** Utilizes the Spacebus-4000C4 platform, known for high-power communications satellites. ## Body ### Overview Hellas Sat 3 is a geostationary communications satellite, classified as an artificial satellite designed for telecommunications and a satellite in geostationary orbit. Its NORAD ID is 42814, and its COSPAR ID and NSSDCA ID are both 2017-040A. The satellite is operated by Inmarsat and Hellas Sat, with associated countries including Greece and Cyprus. ### Technical Specifications - **Manufacturer:** Thales Alenia Space, with France noted as the country of origin. - **Spacecraft Bus:** The satellite is built on the Spacebus-4000C4 platform. - **Mass:** - Launch weight: 5780 kilograms. - Dry weight: 2500 kilograms. - **Power System:** Powered by two spacecraft solar arrays, one S400 thruster, and four SPT-100 thrusters. - **Space Tug:** Utilizes an ESC-A H14.4 space tug. - **Service Life:** Designed for an operational service life of 15 years. ### Launch Details - **Launch Date:** Hellas Sat 3 was launched on June 28, 2017, at 21:15 UTC. - **Launch Vehicle:** The satellite was carried into orbit by an Ariane 5 ECA, specifically flight VA238. - **Launch Site:** The launch took place from ELA-3. - **Orbit:** It is positioned in geostationary orbit. ### Services and Purpose Hellas Sat 3 is designed to provide a variety of satellite services, including: - Mobile satellite service. - Fixed-satellite service. - Broadcasting-satellite service. ### Development Timeline - **Construction Contract:** The construction contract for Hellas Sat 3 was signed in June 2014. - **Rocket Launch:** The rocket launch occurred on June 28, 2017, from ELA-3. ### Aliases Hellas Sat 3 is also known by several aliases, including HellasSat 3, HS 3, Inmarsat-S EAN, Europasat, Inmarsat-S-EAN, and EuropaSat/HellasSat 3. ## References 1. [Source](https://space.skyrocket.de/doc_sdat/hellassat-3-inmarsat-s-ean.htm) 2. Jonathan's Space Report 3. [Source](https://www.satbeams.com/satellites?norad=42814)