mick laBriola

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 and will pass perihelion on 8 November 2025 when it will be 0.53 AU (79 million km; 49 million mi) from the Sun. This perihelion passage will reduce the orbital period to about 1,150 years. 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 16 October 2025, the comet is about apparent magnitude 5.0,and is visible in binoculars about 15 degrees (approximately one and a half fists) below the handle of the Big Dipper and 2 degrees from Cor Caroli.