SSTL S1-4 is a payload in SSO orbit, operated by Surrey Satellite Technology Ltd/Astrium, launched 2018.
It went up on launch 2018-071, alongside everything else on that flight
See it moving on the 3D globe alongside every other active object, propagated in your browser.
How many satellites are in orbit right now?
//Orbital data is approximate and not for operational use. Last ingested from CelesTrak on Oct 22, 2026.