V1331 Cygni

This star is thought to have undergone an outburst several thousand years ago, creating the crescent-shaped nebula around it. The star is also embedded in the dark nebula LDN 981.

This star is a T Tauri star, making it a pre-main sequence star. What's unusual about this star is that it's relatively isolated, whereas T Tauri stars are usually found in groups, making this star very good for the study of star formation.