A hitch that developed during the fourth firing of the propulsion system of the country’s Mars spacecraft on Monday morning kept the orbiter short of moving into a higher elliptical orbit and with an increased velocity.

Scientists at the ISRO Telemetry, Tracking & Command Network (ISTRAC) would make a new attempt at 5 a.m. on Tuesday to take the orbiter to the required apogee (or the farthest point from Earth) and with necessary velocity, the ISRO said after the exercise.

With this engine burn, the ISRO had intended to push the Mars craft’s apogee to 1 lakh km and a velocity of 130 metres per second.

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