NGC 450

NGC 450 is a spiral galaxy located approximately 130 million light-years away in the constellation Cetus. It is classified as an SA(s)c galaxy, indicating a spiral galaxy with loosely wound arms and a small bulge.

One of the more notable aspects of NGC 450 is its apparent proximity to a smaller, irregular galaxy, UGC 807. This juxtaposition has led to debate among astronomers regarding whether the two galaxies are physically interacting or simply aligned along our line of sight. Some studies suggest a tidal bridge or other evidence of gravitational interaction, while others argue that the apparent proximity is coincidental. Determining the true nature of their relationship requires careful analysis of their radial velocities and distances.

NGC 450 exhibits a relatively active star formation rate, particularly in its spiral arms. This is evidenced by the presence of numerous HII regions, which are clouds of ionized hydrogen gas that glow brightly due to the radiation emitted by young, hot stars. The star formation activity contributes to the galaxy's overall blue color, a characteristic of galaxies with ongoing star formation.

The galaxy was discovered by William Herschel on October 1, 1785. Its apparent magnitude is around 12, making it visible through moderate to large telescopes under dark skies. Research continues on NGC 450 and its possible interaction with UGC 807, contributing to our understanding of galaxy evolution and interactions.