US EditionComet Tracker: How To Find Comets Lemmon And SWAN On Saturday
Comets Lemmon and SWAN will peak in brightness around Oct. 20-21 during the Orionid meteor shower but require binoculars for clear viewing, experts say.
- About 90 minutes after sunset on Saturday, Oct. 18, 2025, Comet Lemmon and Comet SWAN appear in opposite skies, needing binoculars to view.
- The comets' recent brightening has made Comet Lemmon, discovered earlier this year by the Mount Lemmon Survey, and Comet SWAN the first visible to amateur skywatchers since October 2024.
- The Comet Observation Database lists Lemmon near magnitude +4.9–+5.2 and SWAN at +5.9, with a 30-minute viewing window starting about 90 minutes after sunset and 5:41–6:11 a.m. EDT for Lemmon.
- This timing aligns with the Orionid meteor shower, and both comets could be on the cusp of naked-eye visibility, attracting amateur skywatchers. The peak brightness is predicted for Oct. 20–21.
- Longer-Term, the comets' orbits show Comet SWAN takes 22,554 years and Comet Lemmon 1,350 years, with distances of 88.5 million miles and 66.8 million miles from the sun.
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kreiszeitung.de
onetz.deTwo comets fly past Earth in sight. Anyone who wants to spot them needs some luck - or should stay in a favorable region.
Two comets fly past Earth in sight. Anyone who wants to spot them needs some luck - or should stay in a favorable region.
During this month of October, two long-term comets will cross the visible sky from Mexico and Central America: comet C/2025 A6 (Lemmon) and comet C/2025 R2 (SWAN).Both will have their maximum approach to the Earth between 19 and 21 October, according to the Foundation for the National Center of Science and Technology (Cientec).The comet Lemmon was detected by the Mount Lemmon Survey program on 3 January 2025, with a magnitude of 21.5, tanue that…
LETTER FROM THE SPACE. Eyes up in the sky this weekend: Lemmon and Swan will be visible simultaneously at the beginning of the evening, an exceptional spectacle.
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