The increasing number of satellites and space objects in orbit poses a higher risk of collisions and the creation of space debris, which can have cascading effects and threaten operational satellites and spacecraft. Therefore, a space traffic management system is essential to enhance space situational awareness and mitigate collision risks to ensure the peaceful and sustainable. GISTDA has developed a space traffic management system called ZIRCON to monitor the collision risk of the upcoming satellites THEOS and THEOS2. In the future, there are plans to provide services to satellite users in Thailand.