With reference to Aditya-L1's mission which of the following statements is/are correct?
1
Aditya L1 shall be the first space-based Indian mission to study the Sun.
2
The spacecraft shall be placed in a halo orbit around the Lagrange point 1 (L1) of the Sun-Earth system, which is about 1.5 million km from the Earth
3
Nigar Shaji is project director of ISRO's Aditya L1 solar mission.
4
More than one of the above