text: Notably , an imaging sequence covering an entire orbital period at 4 km resolution taken on November 15 , 2004 ( soon after 's discovery ) failed to recover the object , while it has been seen again later .
simplified: Notably , an imaging sequence covering an entire orbital period at 4 km resolution taken on 15 November , 2004 ( soon after 's discovery ) failed to find the object , while it has been seen again later .