The ESEO satellite was launched into Low Earth Orbit (LEO) on 3 December 2018. ESEO was a passenger together with about 70 other micro, nano, and pico satellites from several countries from all over the world.
The ESEO mission is based on a Sun Synchronous Orbit (SSO), circular with an altitude of 575 km, inclined 97.5° (polar). ESEO will cross the Earth equator (descending node, or LTDN) at about 10:30 (UTC) every day. The orbital period is about 94 minutes. Its nominal attitude will be nadir pointing (that is pointing down perpendicularly towards the Earth surface).
The nominal mission duration is 6 months, with the possibility of extension of one year. At the end of its mission, ESEO will deploy a sail that will accelerate its re-entry and burning in the atmosphere by means of increased atmospheric drag (a student technology demonstration experiment in itself). ESEO is compliant with the European space-debris mitigation guidelinesfor the end of satellite missions.