The rings surrounding the centaur Chariklo are composed of fine particulate matter. While researchers continue to study these structures, current observations suggest the rings consist of small icy particles. These particles are likely a mixture of water ice and potentially other volatile organic compounds, which is typical for objects located in the outer regions of the solar system.
Regarding density, the rings are extremely low in density, characteristic of most ring systems found in our solar system. This low density allows the rings to remain stable in a thin, flat configuration around the main body. The exact density values remain a subject of ongoing scientific investigation as telescopes seek higher resolution data to confirm the exact ratio of ice to rocky material.
For the most accurate and up to date astronomical data, you should consult official space agency resources. You can find more information through the NASA website.
