$11 - Limping from the button w/13 BB

[kevkev60614]

PokerStars No-Limit Hold'em Tourney, Big Blind is t150 (5 handed) FTR converter on zerodivide.cx

UTG (t4450)
MP (t2225)
Hero (t1940)
SB (t1465)
BB (t3420)

Preflop: Hero is Button with ??.
UTG calls t150, <font color="#666666">1 fold</font>, Hero calls t150

I've been limping here with small pairs and hands like JTs. I then fold to a raise from the blinds or a bet on the flop unless I hit. My thought process has always been that I'm risking 1 BB, and hands like that could double me if I hit, and there's always a chance I could outplay them.

Lately it seems I'm just giving away a BB. What should I be limping with in this spot? What if it had been folded to me?