Please note that Mommsen uses the AUC chronology (Ab Urbe Condita), i.e. from the founding of the City of Rome. You can use this reference table to have the B.C. dates
Caesar entrusted the pursuit of the king, who had gone home by way
of Sinope to Pharnaces' illegitimate brother, the brave Mithradates
of Pergamus, who as a reward for the services rendered by him in Egypt
received the crown of the Bosporan kingdom in room of Pharnaces.
In other respects the affairs of Syria and Asia Minor were peacefully
settled; Caesar's own allies were richly rewarded, those of Pompeius
were in general dismissed with fines or reprimands.
Deiotarus alone,
the most powerful of the clients of Pompeius, was again confined
to his narrow hereditary domain, the canton of the Tolistobogii.
In his stead Ariobarzanes king of Cappadocia was invested with
Lesser Armenia, and the tetrarchy of the Trocmi usurped by Deiotarus
was conferred on the new king of the Bosporus, who was descended
by the maternal side from one of the Galatian princely houses
as by the paternal from that of Pontus.