Aerospace Instrument-Making Annotation << Back Method of Assessing Accuracy in Determining the Observation Angle of a Moving Orbital Object Klyuchkin A.K., Blazhko A.K., Pirukhin V.A. Waging war in modern conditions is practically impossible without the use of military spacecraft. Therefore, the success of one of the warring parties in an armed conflict will be determined by how effectively it will be able to solve the problem of disabling the enemy and protecting its orbital groups. Despite the partial reduction in work on the space control program, “partner countries” still continue to view space as an arena of armed struggle. This forces the Russian Federation, in turn, not to stop research in the fi eld of developing means of intercepting and inspecting orbital targets. Space inspection is understood as a set of operations carried out using space-based equipment and aimed at obtaining information about space objects of artifi cial origin through observation, including when approaching them, in order to solve one of the applied problems. An algorithm for determining the angle of a moving orbital target is proposed. The methodology for assessing the accuracy of the algorithm is considered, and the main evaluation results are presented. Existing methods for determining the relative orientation of moving objects using passive optical-electronic systems are based on spatial analysis of an extended image of the observed object. The algorithm proposed in this article allows us to solve the problem of determining the observation angle of a moving orbital target, which, due to its great distance, is a point source of radiation with uncertain motion parameters. Keywords: Determination of angle, moving orbital target, methods for determining relative orientation, passive opticalelectronic system, point source of radiation, uncertain motion parameters, target space object, measurement accuracy, moving observer. DOI: 10.25791/aviakosmos.6.2025.1487 Pp. 21-27.