The physics of near-Earth space — the Earth’s upper atmosphere, ionosphere, and magnetosphere — is a fast-growing field of modern space research. Databases of geospace projects must take into account the nature of the measurements consisting of a prolonged record of the space parameters along the satellite’s orbit (temperature, neutral and charged particle densities, electric and magnetic field components, etc., more than several dozen variables in total). The measured data must be matched to the satellite’s position (in contrast, let’s say, to solar space telescope that only requires time matching). The user query to the data storage is therefore represented by both spatial and temporal constraints. This drives the need for a specific database, API (Application Programmer’s Interface), and user interface structure.
               A special centre for collection, processing, and distribution of satellite data is under development at the Space Research Institute of the NASU-SSAU (Ukraine). It is aimed, first of all, for the Ionosat-Micro and the Aerosol-UA projects but designed with an ability to host data from any geospace mission in mind.

              The goal of this article is to introduce the structure of the core component of this centre — the PROMIS information system (abbreviated from PROcessed Measurements of Ionospheric Satellites), available at https://promis.ikd.kiev.ua, to the expert community and to get feedback and suggestions on further improvements to usability and functionality of this system.