Science ❯ Astrophysics ❯ Orbital Mechanics

Cometary Orbits

Swift-Tuttle's Path Historical Comet Observations 3I/ATLAS Path Interstellar Comet Orbits Oort Cloud

Hubble and Infrared Observations Show 3I/ATLAS Is an Active Interstellar Comet

Thanks to Hubble’s sharp images and infrared spectroscopy, astronomers place the nucleus at 320 m–5.6 km and confirm active dust emission under a red spectral slope.