Most boring announcement ever; please vote now for Brazil ringed asteroid discovery

A photometric study in 2001 was unable to find a definite period of rotation.[4] Infrared observations of Chariklo indicate water ice[5] on the surface. Mike Brown's website lists it as a possible dwarf planet with a measured diameter of 258 km.[6] On 26 March 2014 astronomers announced the discovery of planetary rings around Chariklo by observing a stellar occultation.[7][8]

Wiki