The primary objective of Perseus is the validation of the propulsion systems that will be used on Lunar Mission BW1. Perseus will have an arcjet, a pulsed plasma thruster and a precise and highly accurate attitude and orbit control system, which are going to be tested in orbit. Furthermore the contamination of the satellite's surface by the thrusters' exhaust gas will be examined. After completion of these tests Perseus will accomplish its secondary objetive, serving as an astronomical platform for an UV telescope and spectrometer.

The main structure of the satellite will have a size of 60x70x85 cm³. The wingspan of the deployed solar panels will be 1,8 m. In this configuration the total surface available for solar cells is 1.53 m². Like its precursor, the Flying Laptop, Perseus will be launched with Piggyback opportunity together with a main passenger on the rocket. The orbit will be polar and sun-synchronous with a height below 1000 km.