The Indian Space Research Organisation (ISRO) scientist on Friday performed the second of the five planned orbit-raising manoeuvre of Chandrayaan-2 in the Earth’s orbit.
The on-board propulsion system was fired to increase the apogee or the point on the elliptical orbit farthest from the Earth at 1:08 am.
The first orbit raising manoeuvre was able to forego by ISRO scientists which is planned for the day after lift-off as the GSLV Mark III over-performed placing the spacecraft which can be used to play around with the manaoeuvre.
Reports say that the orbit of Chandrayaan 2 was increased to a 251×54,829 km from the 230 x 45, 163 km which was in after the first manoeuvre. ISRO scientist said that three more burns or firing of the propulsion system will be carried out to reach the final orbit of 221 x 1,43,585 km on August 6.
The spacecraft is scheduled to reach a lunar orbit on August 20.
An official of ISRO said that although they have given the intended orbits for the next four manoeuvres, with each burn the numbers are likely to change which is a very dynamic process. He said that there is a team that recalculates the orbit every hour and there is round the clock simulation to plan for the next move. Once launched, it cannot be changed as it is not like a launch vehicle. The official further said that the spacecraft is in their control and they need to guide it to the intended orbit to escape Earth’s orbit.