No, the Aurora Ticket cannot be obtained through Pokemon Channel.
You need a Nintendo event I think, It's either that or you can't get that in Platinum
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You get Deoxys.
There is none
TO CATCH THE POKEMON LATIOS AND LATIAS IS TO GET THE AURORA TICKET BY USING THE NINTENDO EVENT ON THE MYSTERY GIFT
How do you get the Aurora ticket in Pokemon Emerald to get Deoxys Give you every possible way?
I Do Not Know The Code But, I Do Know What Happens You Get A Mew Holding The Aurora Ticket Then Well Take The Aurora Ticket Out Of It's Hands Then There You Go! Have Fun With It!