C/2009 P1, also known as Comet McNaught, is a long-period comet that was discovered in 2009. It is classified as a non-periodic comet, meaning it does not have a regular orbit and can take thousands of years to return to the inner solar system. The comet was notable for its bright appearance and long tail, which made it visible to the naked eye. The comet reached its closest approach to the Sun, known as perihelion, on November 28, 2009. During this time, it became particularly bright and was observed by astronomers and skywatchers around the world. C/2009 P1 provided valuable data for studying the composition and behavior of comets.