The spacecraft crossed the SOI of Earth at around 1:14 hrs (IST) today, Indian Space Research Organisation (ISRO) said.
The Mars orbiter spacecraft had slung out of its earth-bound orbit in the early hours of December one during the critical 22-minute Trans Mars Injection, a manoeuvre billed as the "mother of all slingshots."
The spacecraft which was in a hyperbolic orbit had escaped from the SOI, after the first step on Sunday in the Mars mission's 680 million-km-long odyssey to its destination to put on course the country's first ever inter-planetary space rendezvous.
The spacecraft is being continuously monitored from the Spacecraft Control Centre at ISRO Telemetry, Tracking and Command Network (ISTRAC) in Bangalore with support from Indian Deep Space Network (IDSN) antennae at Byalalu here.
The Mars mission's success would catapult India into a small club, which included the US, Europe and Russia, whose probes have orbited or landed on Mars.