There was no way to actively steer Philae.

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