15 February 2021
On 15 February 2021, Tianwen 1 performed its 1st Mars orbit adjustment. The probe's 3,000 N engine was ignited at 17:00 h when passing the 'apogee' of the Mars orbit. That allowed for a plane change to adjust the orbital inclination to a polar orbit. The manoeuvre also reduced the closest distance to Mars from 400 km to 265 km. There are 3 more orbit corrections expected to bring the current elliptical orbit to a circular working orbit.
MORE...