Rare Comet Lemmon to Grace October skies After 1,154-Year Absence
October 2025 promises a spectacular celestial display as Comet C/2025 A6 Lemmon makes its closest approach to Earth after more than a millennium. Visible throughout October and into early November, the comet is anticipated to be a highlight of the autumn sky, offering a rare opportunity for both seasoned astronomers and casual stargazers.
currently observable wiht binoculars before dawn to the northeast, appearing as a faint luminous patch between the “paws” of Ursa Major, Lemmon’s brightness is expected to increase significantly. The comet will reach its minimum distance from Earth on October 21st, coming within approximately 89 million kilometers. From that date onward, conditions will improve, allowing for naked-eye viewing in the evening immediately after sunset.Lemmon will continue its journey, reaching its closest point to the Sun on November 8th.
Classified as a periodic comet, Lemmon has an estimated orbital period of 1,154 years. Its previous appearance was over a thousand years ago, and it won’t be visible again untill the fourth millennium.
Optimal viewing locations in the Vicenza area include the Asiago plateau, Monte Grappa, the Recoaro area with the Little Dolomites, and the Marana Observatory. A stunning image of the comet, captured by photographer Nicola Bizzotto at Pove del Grappa using long-exposure astrophotography, reveals its bright tail and nucleus.
Adding to the celestial spectacle, the Orionids meteor shower will peak between October 20 and 23, offering an average of 15-20 meteors per hour.
