Orbital Dynamics System of TUBITAK UZAY for Earth Orbiting Spacecraft

Satellite missions rely on orbital dynamics calculations at every step, from initial mission analysis at conceptual design phase to disposal at the end of mission. Therefore, the accuracy, fidelity, versatility and reliability of this tool can be deemed to be a key contributor to mission success. This paper presents the current status, selected functionalities and performance of the Orbital Dynamics System software developed in-house for TUBITAK UZAY to meet the mission analysis to operational flight dynamics computation needs. The software is written purely in Java and features state-of-the-art multi-threading and service-based-architecture, in addition to precise orbital mechanics analysis, modelling, estimation and control functionalities. This software has been used in an operational setting for RASAT and GOKTURK-2 satellites for a combined duration of more than 14 years.