Togetic was released with the release of Johto-region Baby Pokémon on December 12th, 2016.
Actually, it was possible to obtain by evolving Togepi hatched from egg, because Togetic was released as Pokémon available to catch in the wild following the main release of the Johto-region Pokémon on February 16th, 2017.
In the wild, maximum capture CP of Togetic is 1,464, however it can reach 1,586, if encountered Pokémon is boosted by current weather.
As a former 4th tier Raid Boss, Togetic's CP was 18,671. Its maximum capture CP in Bonus Challenge was 976 and 1,220 when encountered Pokémon was boosted by weather.