http://www.sensysmag.com/components/com_jce/editor/tiny_mce/plugins/article/img/readmore.png); width: 628.6500244140625px; color: rgb(82, 82, 83); font-family: Arial, Helvetica, sans-serif; line-height: 18px; “>
The 51-hour countdown commenced at 06:51 hours today (September 7, 2012). During the Countdown, propellant-filling operations of the liquid propellant second stage (PS2) and fourth stage (PS4) of the launch vehicle will be carried out. Besides, mandatory checks on the launch vehicle and spacecraft will be carried out. Also, charging of batteries and pressurisation of propellant tanks onboard the satellite will be performed. Readiness of various ground systems such as tracking radar systems and communication networks will also be ascertained.
PSLV-C21 will inject SPOT-6 and PROITERES satellites into an orbit of 655 km altitude at an inclination of 98.23o.