Overview
- Best viewing is just after sunset on the western sky, with the comet near Arcturus in Boötes this week and crossing toward Ophiuchus around Halloween.
- Visibility favors the Northern Hemisphere through late October, with continued views into early November and improving prospects for southern latitudes thereafter.
- Closest approach occurred around Oct. 21 at roughly 90–101 million kilometers from Earth, marking the start of its brightest public viewing phase.
- Observers report a green coma with a bluish ion tail and a more yellowish dust tail, typical of sublimating ices and ionized gases.
- A second long‑period visitor, Comet SWAN (C/2025 R2), is also on display as the Orionid meteor shower remains active, creating a rare multi‑event sky show.