Astronomy Lemmon comet visible in the evening sky in the coming weeks
Comet C/2025 A6 Lemmon can be seen in the Swiss night sky in the coming weeks when the sky is dark and there is little light pollution. The best observation period is between October 12 and November 2.
07.10.2025, 12:20
07.10.2025, 12:21
SDA
The comet will reach its maximum brightness around the end of October, wrote the weather service Meteonews in its online blog on Tuesday. The comet is visible to the naked eye, but binoculars and powerful binoculars are recommended.
The forecasts assume a brightness of four to three mag, it added. Mag is the unit of measurement for the brightness of a celestial body. For comparison, Polaris has an apparent brightness of around 2 mag and is 2.5 times brighter than an object with 3 mag.
According to the weather service, the Lemmon Comet has already been visible in the morning sky with telescopes in recent weeks. In August, it was located in the constellation Gemini, after which it moved through Cancer into the constellation Lynx. In the course of this, its activity steadily increased and an ever longer ion tail formed. Its orbital period is around 1350 years.
