Pico-Satellites in low earth orbit (LEO) experience a very slight amount of residual atmospheric drag due to the rarefied gases of the exosphere. This may or may not be sufficient to ensure that these satellites renter from orbit within a prescribed limit of 25 years. This study will develop and evaluate mathematical models, through simulation, for estimating the average drag on the UoMBSat1 PocketQube in order to devise what additional de-orbiting equipment will be necessary.