Jorma Ryske#Comet 3I/ATLAS image taken this morning 18.12.2025 from observatory Y71 Makroskooppi, Fregenal de la Sierra, Spain.
Tail visible at left side of the comet 3I is actually mainly anti-tail, ie dust left to comets path and visible due to orbital geometry between the Earth and the comet. Actual bluish ion tail is here very dim and short toward upper right from optocenter.
Tomorrow 19.12.2025 morning comet 3I will be at it's nearest position from Earth, 270 million km.
