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
From: The History of Rome, by Theodor Mommsen
Translated with the sanction of the author by William Purdie Dickson
The Kingdoms of Asia Minor
Among the states of the second rank, merely an indirect importance, so far as concerned the contact of the east with the west, attached in the first instance to that series of states which, stretching from the southern end of the Caspian Sea to the Hellespont, occupied the interior and the north coast of Asia Minor: Atropatene (in the modern Aderbijan, south-west of the Caspian), next to it Armenia, Cappadocia in the interior of Asia Minor, Pontus on the south-east, and Bithynia on the south-west, shore of the Black Sea.
All of these were fragments of the great Persian Empire, and were ruled by Oriental, mostly old Persian, dynasties--the remote mountain-land of Atropatene in particular was the true asylum of the ancient Persian system, over which even the expedition of Alexander had swept without leaving a trace--and all were in the same relation of temporary and superficial dependence on the Greek dynasty, which had taken or wished to take the place of the great-kings in Asia.
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Reference address : https://www.ellopos.net/elpenor/rome/3-08-second-macedonian-war.asp?pg=8