The Uncanny X-Men #509 is a Marvel comic published in 2009, written by Matt Fraction with artwork by Greg Land. It is part of the "Sisterhood" storyline where the X-Men live in San Francisco and deal with new threats from the Sisterhood of Mutants. The issue features Psylocke prominently on the cover in "Good Girl Art" style and showcases action from characters like Pixie and Hank McCoy's science team.

Key points about Uncanny X-Men #509:

• Publication: June 2009 by Marvel Comics

• Writer: Matt Fraction

• Artist: Greg Land (cover and interiors)

• Storyline: Sisterhood plot against the X-Men

• Notable Characters: Psylocke, Pixie, Hank McCoy

• This issue is an important part of the mid-2000s X-Men continuity focused on re-establishing the team in a new city setting with evolving threats. It is sought after especially for its cover art by Greg Land.