Latest Mission updates

Ariane 5 February 17, 2020

Ariane 5 is in the launch zone for Arianespace’s liftoff with JCSAT-17 and GEO-KOMPSAT-2B tomorrow

Arianespace has delivered another Ariane 5 to the launch zone at Europe’s Spaceport in French Guiana, clearing the way for its February 18 mission with two satellite payloads: SKY Perfect JSAT Corporation’s JCSAT-17 and GEO-KOMPSAT-2B for the Korea Aerospace Research Institute (KARI).

The Ariane 5 that will lift off on Arianespace’s Flight VA252 nears completion of its transfer from the Spaceport’s Final Assembly Building to the ELA-3 launch zone.

Riding atop a mobile launch table, Ariane 5 was transferred from the Spaceport’s Final Assembly Building – where payload integration occurred – to the dedicated ELA-3 launch complex. The heavy-lift vehicle is delivered to Arianespace by ArianeGroup as production prime contractor.

With this rollout completed, the final countdown will begin for a February 18 liftoff at the start of a 1-hr., 2-min. launch window that opens at 7:18 p.m. local time in French Guiana.

Tomorrow’s mission is designated Flight VA252, and has an estimated payload performance of 10,109 kg. – a total that factors in the liftoff mass of its JCSAT-17 and GEO-KOMPSAT-2B spacecraft passengers, plus the dual-satellite dispenser system and integration hardware. Both passengers are to be deployed into geostationary transfer orbit during a 31-min. flight sequence.

Riding in Ariane 5’s upper passenger position is SKY Perfect JSAT Corporation’s JCSAT-17, built by Lockheed Martin Space. This relay platform is designed to deliver flexible, high-bandwidth communications for users in Japan and the surrounding region from an orbital position at 136 deg. East.

GEO-KOMPSAT-2B, which is located below JCSAT-17 in the launcher payload arrangement, was developed by the Korea Aerospace Research Institute (KARI). It will conduct Earth environment monitoring and ocean monitoring missions and is to be stationed at the 128.2 deg. East orbital location.

  • A larger version of the photo above is available for downloading in the Gallery.


Launch window for Flight VA252:

 French Guiana UTC Washington, D.C.
Between 7:18 p.m. and
8:20 p.m. on Feb. 18
Between 22:18 and
23:20 on Feb. 18
Between 5:18 p.m. and
6:20 p.m. on Feb. 18
Paris Japan Korea
Between 11:18 p.m. and
12:20 a.m. on Feb. 18/19
Between 07:18 a.m. and
08:20 a.m. on Feb. 19
Between 07:18 a.m. and
08:20 a.m. on Feb. 19


More details are available in the VA252 launch kit:

Ariane Flight VA252
PDF / 970 KB

SKY Perfect JSAT Corporation website:

Lockheed Martin website:

Korea Aerospace Research Institute website:


Ariane 5 February 14, 2020

Launch readiness confirmed: Approval is given for Arianespace’s Ariane 5 flight on February 18

Read more
Tune in on close