NGC 609 (also known as C 0133+643) is a small open cluster located in the Cassiopeia constellation containing approximately 261 stars. Given its visual magnitude of 11, NGC 609 is visible with the help of a telescope having an aperture of 6 inches (150mm) or more. It was discovered by 19th century German astronomer Heinrich d'Arrest on 9 August 1863. NGC 609 is moving towards the Sun with a radial velocity of -44.32 km/s±0.68. The object is located approximately 12,984.29 light years, (3981 pc), from the Earth.