ARIANESPACE

Ariane 5 ECA | Hellas Sat 3 (Inmarsat S EAN) & GSAT-17

SUCCESSJun 28, 2017 at 21:15 UTCAriane 5 ECA →
PADAriane Launch Area 3
SITEGuiana Space Centre, French Guiana →
ORBITGeostationary Transfer Orbit
TYPECommunications

Hellas-Sat 3 is a powerful telecommunications condominium satellite for Inmarsat and Hellas-Sat. The satellite will provide Mobile Satellite Services (MSS), Fixed Satellite Services (FSS) and Broadcast Satellite Services (BSS). It is equipped with Ka/S-band payload, 47 Ku-band transponders, 1 Ka-band transponder. Weighing 5900 kg at launch, the satellite is to reside in geostationary orbit in an orbital position 39° East, where it is expected to operate for about 15 years. GSAT-17 is a communication satellite with a lift off mass of 3425 kg and 6 KW power generation capacity. The satellite’s commercial transponders include Ku-band, Normal C-band and Extended C-band transponders. It additionally carries a dedicated transponder for data relay (DRT) and search-and-rescue (SAR) services.

MISSION
HellasSat-3 (Inmarsat S EAN) & GSAT-17
MISSION TYPE
Communications
TARGET ORBIT
Geostationary Transfer Orbit
COUNTRY
FRA
CONFIRMEDPrecision: Minute
LAUNCH LIBRARY 2 PRIMARY
API ID: 20861be2-c5d7-4b81-b032-665725a07540
Reported date: Jun 28, 2017 at 21:15 UTC
Last synced: 3 hours ago
This launch date and time are confirmed by the launch provider. Countdown is active.
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When is the Ariane 5 ECA | Hellas Sat 3 (Inmarsat S EAN) & GSAT-17 launch?
The Ariane 5 ECA | Hellas Sat 3 (Inmarsat S EAN) & GSAT-17 is scheduled for Wednesday, June 28, 2017 at 9:15 PM UTC. This is the NET (No Earlier Than) time and may be subject to change. Current status: SUCCESS.
What rocket is being used for HellasSat-3 (Inmarsat S EAN) & GSAT-17?
The Ariane 5 ECA | Hellas Sat 3 (Inmarsat S EAN) & GSAT-17 mission uses the Ariane 5 ECA rocket, manufactured by ArianeGroup. The Ariane 5 ECA has flown 73 times with a 97.3% success rate.
Where is the Ariane 5 ECA | Hellas Sat 3 (Inmarsat S EAN) & GSAT-17 launching from?
The launch takes place from Ariane Launch Area 3 at Guiana Space Centre, French Guiana.
What orbit is HellasSat-3 (Inmarsat S EAN) & GSAT-17 going to?
The HellasSat-3 (Inmarsat S EAN) & GSAT-17 mission is targeting Geostationary Transfer Orbit.
Who is launching HellasSat-3 (Inmarsat S EAN) & GSAT-17?
The Ariane 5 ECA | Hellas Sat 3 (Inmarsat S EAN) & GSAT-17 is operated by Arianespace.
Can I watch the Ariane 5 ECA | Hellas Sat 3 (Inmarsat S EAN) & GSAT-17 launch live?
Yes. Visit the launch detail page on Space Launch Live for embedded YouTube webcasts, replay videos, and links to live coverage from SpaceX, NASA, NASASpaceflight, and other channels.
Mar 28, 2026 20:33 UTC
Launch added to tracker
Imported from Launch Library 2 API
Mar 28, 2026 20:33 UTC
Launch date set: Jun 28, 2017 at 21:15 UTC
NET (No Earlier Than) confirmed by Arianespace
Mar 28, 2026 20:33 UTC
Launch completed successfully
Updated via Launch Library 2
Last data sync: 3 hours ago
Launch Library 23 hours ago
Launch ID: 20861be2-c5d7-4b81-b032-665725a07540
Open-Meteo Weather2 days ago
Pad weather at 5.24, -52.77
YouTube Video Search2 days ago
6 videos discovered