Comet C/2023 A3 (Tsuchinshan-ATLAS) is a long-period comet discovered in January 2023 by two independent surveys: the Purple Mountain Observatory in China (Tsuchinshan) and the Asteroid Terrestrial-impact Last Alert System (ATLAS). It's expected to reach its closest approach to the Sun (perihelion) in September 2024, and if it survives, it could become a bright object visible to the naked eye, potentially reaching its brightest in October 2024. Comet C/2023 A3 is notable for its rapid approach, and early observations suggest it might put on an impressive display as it moves through the inner solar system.