January 27, 2023

The occultation light curve of the background star caused by the passage of asteroid Chariklo captured by the James Webb Space Telescope's Near-infrared Camera (NIRCam) instrument

A stellar occultation that took place on October 18, 2022, made it possible to study asteroid Chariklo observing its rings as well, a truly peculiar feature for such a small object. A team of researchers used the James Webb Space Telescope to capture Chariklo’s passage in front of a star from Webb’s point of view. The NIRCam and NIRSpec instruments enabled images and spectrographic features of Chariklo to be obtained. In recent days, the NIRISS instrument had a software problem that blocked the transmission of the collected data but no hardware failures were found, therefore it’s possible that the data will be recovered later to complete an in-depth study of this asteroid.