Previous studies substantiated the fact that Tunguska Cosmic Body was in a near-Earth orbit prior to falling. This paper considers events preceding June 30 catastrophe. Identified are orbital parameters and factors resulting The information from Mount Wilson Observatory is provided, which confirms orbit. circumstances surrounding entry into reviewed, event timing identified. Substantiation prop...

The proliferation of low-earth orbit (LEO) satellites and the LEO satellite internet will be a game-changer for low-latency high-speed global internet. While this new generation in conjunction with fifth network (5G) sixth (6G) enabled emerging technologies, such as precision farming smart cities, it bring challenges, collision, limited lifespan, security concerns, brightness. This article disc...

This research is focused on the definition, analysis, and numerical testing of an effective nonlinear orbit control technique tailored to compensating perturbations, as well possible errors at injection low- medium-altitude Earth-orbit satellites. A general, systematic approach real-time presented, under assumption that satellite interest equipped with a steerable throttleable low-thrust propul...

The formation control of a long-distance, drag-free, low-thrust, low-Earth orbit satellite is outlined, in view of future Earth-gravity monitoring missions employing long baseline interferometry (> 10 km) and lasting at least six years. To this purpose, a formation consisting of two drag-free satellites, orbiting at a fixed distance in a sun-synchronous orbit, has been proposed as a baseline. F...

A simple targeting algorithm for trans-Earth injection is developed. The techniques presented in this paper build on techniques developed for the Apollo program and other lunar and interplanetary missions. Presently, more sophisticated algorithms exist for solving this problem, but the simplicity of this particular algorithm makes it well-suited for on-board use during contingency and abort ope...

A particular periodic orbit in the Earth-Sun circular restricted three body problem is shown to have the characteristics needed for a ballistic lunar capture transfer. An injection from a circular parking orbit into the periodic orbit serves as an initial guess for a targeting algorithm. By targeting appropriate parameters incrementally in increasingly complicated force models and using precise...