▁noted ▁problems ▁with ▁both ▁the ▁positions ▁of ▁P og son ' s ▁" com et " ▁compared ▁to ▁that ▁of ▁B iel a ▁and ▁the ▁ 1 2 - week ▁difference ▁between ▁P og son ' s ▁observations ▁and ▁the ▁project ed ▁orbit ▁of ▁B iel a : ▁however , ▁he ▁conced ed ▁that ▁the ▁difference ▁in ▁incl ination ▁could ▁be ▁explained ▁if ▁P og son ▁had ▁seen ▁the ▁secondary ▁com et ▁of ▁B iel a ▁on ▁the ▁ 3 rd ▁and ▁the ▁primary ▁on ▁the ▁ 4 th . ▁ ▁A ▁number ▁of ▁or bits ▁were ▁subsequently ▁published ▁for ▁P og son ' s ▁object ▁by ▁Karl ▁Bru h ns ▁( 1 8 7 5 ) ▁and ▁Heinrich ▁Kre utz ▁( 1 8 8 6 ▁and ▁ 1 9 0 2 ), ▁but ▁being ▁based ▁on ▁only ▁three ▁positions ▁are ▁rather ▁spec ulative . ▁If ▁the ▁object ▁seen ▁by ▁P og son ▁was ▁a ▁com et , ▁it ▁has ▁not ▁been ▁detected ▁since . ▁ ▁The ▁Irish ▁astronom er ▁William ▁Henry ▁Stanley ▁Mon ck ▁was ▁later ▁to ▁suggest ▁that ▁" the ▁com ets ▁of ▁P og son ▁and ▁B iel a ▁may ▁belong ▁to ▁the ▁same ▁family ▁and ▁may ▁co - oper ate ▁in ▁producing ▁the ▁same ▁diff used ▁meteor ▁show er ". ▁He ▁was ▁also ▁to ▁suggest ▁that ▁a ▁possible ▁com et ▁seen ▁by ▁James ▁Buck ingham ▁on ▁November ▁ 9 , ▁ 1 8 6 5 ▁might ▁have ▁been ▁the ▁same ▁object ▁as ▁that ▁seen ▁by ▁P og son ,