There was no way to actively steer Philae.
There was no way to actively steer Philae.
Therefore, the final landing site would always come with a measure of uncertainty. The plan was to touch down in the centre of this circle, within a radius of 500 metres.
Credit:
ESA/Rosetta/MPS for OSIRIS Team MPS/UPD/LAM/IAA/SSO/INTA/UPM/DASP/IDA