Pan-STARRS (Panoramic Survey Telescope and Rapid Response System) is a system of telescopes continually observing the sky to identify Near-Earth Objects. It is located at the Haleakala Observatory, Hawaii. The telescopes (PS1, Pan-STARRS 1 from 2010 and PS2 from 2014) are 1.8m Ritchey-Chrétien Telescopes with 1400 x 1400 pixel camera (GPC for Gigapixel Camera) with a 3-degree view.
Discoveries include near-Earth objects and other Solar System bodies, Variable Stars and a Supernova. The string PSO is used to designate objects discovered by Pan-STARRS, e.g., PSO J246.4222+15.4698.
Near-Earth Object (NEO)