Discovery and Observation
Comet SWAN25F, discovered by Michael Mattiazzo using SWAN imagery from 's SOHO spacecraft, is currently observable with telescopes and large binoculars, reaching its brightest on May 1, 2025.
Amateur astronomers worldwide have been documenting the comet's brightness increase and tail formation, with notable images from in and Michael Jäger and Gerald Rhemann in .
Visibility and Characteristics
Initially at 10th magnitude, SWAN25F has brightened to 8th magnitude, making it visible in the during twilight. It's expected to become a binocular object as it approaches perihelion.
The comet's tail, showing fine structures and jets, contributes to its visibility. Its green color is attributed to dicarbon, a carbon form known for producing a green hue in comets.