Arp 319 - Stephan's Quintet in Pegasus

Stephan’s Quintet, also cataloged as Arp 319, is a famed compact galaxy group in Pegasus containing five apparent members—though only four are true physical companions; the fifth, NGC 7320, is a foreground galaxy about 40 million light-years away, while the main quartet lies ~210–340 million light-years distant.