Comet A6 2025 Lemmon

 C/2025 A6 (Lemmon) is a non-periodic comet discovered by the Mount Lemmon Survey in images obtained on 3 January 2025. It has an inbound orbital period of about 1,350 years.   Comet C/2023 A3 (Lemmon) observed on 10/26/2025. It makes its closest approach to Earth on 21 October 2025 and may be visible to the naked eye 42 degrees from the Sun after sunset. As of 25 October 2025, the comet is about apparent magnitude 4.3,[6] and the nucleus and coma are visible in binoculars about 15 degrees to the upper left of Arcturus.  The green coma results from diatomic carbon (C₂) molecules excited by ultraviolet sunlight. The faint tail is dust and ionized gas pushed away by solar radiation and the solar wind.