  We present results of Mt Abu JHK photometric and HI Brackett $\gamma$ line
monitoring of the eruptive YSO V1647 Orionis (McNeil's Object) during the
on-going outburst phase in 2008-2012. We discuss JHK colour patterns and
extinction during the outburst and compare these with the previous outburst
phase in 2004-05 and the intervening quiescent period of about 2 years.
Commencing from early 2012, the object shows a slow fading out in all the
bands. We report brightness variations in the nearby Herbig-Haro object HH22
possibly associated with those in V1647 Ori. We also present modelling of the
spectral energy distributions of V1647 Ori during its recent outburst and
quiescent phases. The physical parameters of the protostar and its
circumstellar environment obtained from the modelling indicate marked
differences in the two phases.
