Comet C\2025 A6 Lemmon: View from Italy

Comet C\2025 A6 Lemmon: View from Italy

Discovered in early 2025 by the Mount Lemmon Survey, Comet Lemmon is brightening and moving into morning northern skies. In addition to Comet SWAN25B and Comet ATLAS, Comet C/2025 A6 (Lemmon) is now the third comet currently visible with binoculars and on long camera exposures. Comet Lemmon is still headed into the inner Solar System. The comet will round the Sun on November 8, but first it will pass its nearest to the Earth—at about half the Earth-Sun distance—on October 21. 

Although the brightnesses of comets are notoriously hard to predict, optimistic estimates have Comet Lemmon then becoming visible to the unaided eye. The comet should be best seen in predawn skies until mid-October, when it also becomes visible in evening skies.

Italy, officially the Italian Republic, is a country in Southern and Western Europe. It consists of a peninsula that extends into the Mediterranean Sea, with the Alps on its northern land border, as well as nearly 800 islands, notably Sicily and Sardinia. Italy shares land borders with France to the west; Switzerland and Austria to the north; Slovenia to the east; and the two enclaves of Vatican City and San Marino.

Image Credit: Gianni Lacroce
Release Date: Oct. 4, 2025

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