Find below a detailed timeline for the launch of Gaia on 19 December 2013. See notes for abbreviations. The usual disclaimer applies: This is a real-time activity and all times are subject to change. Follow launch live via ESA TV, starting 08:50 GMT (09:50 CET).
See also some additional post-separation timeline events listed in Gaia liftoff timeline in ESA web.
AIT - The Astrium Integration Team/Suupport Team in Kourou, working on behalf of the ESA Gaia Project Office
DMS - Soyuz Mission Director on console at Kourou
S/C - Spacecraft (= Gaia)
MET - Mission elapsed time (minue before H0, positive after)
B-Team Flight Control Team & Software Support team on console in Main Control Room
Flight Control Team: Voice & status check with spacecraft support team in Kourou
Flight Control Team: Connect network interface to Kourou
Gaia Project Representative (in ESOC): Voice loop & telephone check with Kourou
Synchronise launch countdown clockc (Spacecraft Support Team to Project Represetative)
Spacecraft Mission Director (DMS) on console in Kourou