Rings around minor Solar System bodies can be discovered by recording the light curve of a star during a stellar occultation (when the minor body passes in front of the star and briefly occults it as seen from Earth).
The precise geometry of the small body and its ring can be reconstructed if this event is observed simultaneously by several observers separated by tens of kilometres, or hundreds of kilometres depending on the size of the body.
The MRT project uses this method to search for new rings and moons around known small Solar System bodies. It runs a network of small telescopes distributed across Taiwan's territory (the MRT stations). These telescopes are operated by voluntary observers specifically trained. Independent observers also contribute using their own equipment.
