Ryan Reynolds as Green Lantern may have won this weekend’s domestic box office, but it ranked as the weakest opening weekend box office hero so far this year. The film’s debut rang up only $52.7 million in ticket sales, according to studio estimates, and was outsold by X-Men: First Class (opened at $55.1 million) and Thor ($65.7 million) both of which were released earlier.

Here is the top 10 grossing movies of the weekend, June 17-19, 2011:

• 1. Green Lantern, $52.7 million, new release
• 2. Super 8, $21.3 million, $72.8 million to date
• 3. Mr. Popper’s Penguins, $18.2 million, new release
• 4. X-Men: First Class, $11.5 million, $119.9 million
• 5. The Hangover Part II, $9.6 million, $232.7 million
• 6. Kung Fu Panda 2, $8.7 million, $143.3 million
• 7. Bridesmaids, $7.5 million, $136.8 million
• 8. Pirates of the Caribbean: On Stranger Tides, $6.2 million, $220.3 million
• 9. Midnight in Paris, $5.2 million, $21.8 million
• 10. Judy Moody and the Not Bummer Summer, $2.2 million, $11.2 million