In recent years, there is a growing interest in small satellites for deep space exploration. The
current approach for planetary navigation is based on ground-based radiometric tracking. A …

This paper presents the trajectory design for EQUilibriUm Lunar-Earth point 6U Spacecraft
(EQUULEUS), which aims to demonstrate orbit control capability of CubeSats in the cislunar …

This paper presents a novel approach to the robust solution of optimal impulsive control
problems under aleatory and epistemic uncertainty. The novel approach uses belief Markov …

We report ground-based environmental assessments performed during development of the
sampler system until the launch of the Hayabusa2 spacecraft. We conducted static …

The generation of bounded trajectories complying with operational constraints in the
complex dynamic environment surrounding Phobos is not an easy task. The vicinity of …

The 6U CubeSat “OMOTENASHI,” which is due to be launched in 2020 by NASA's Space
Launch System, will be the world's smallest moon lander. Its main mission is to present the …

An increasing interest in lunar exploration calls for low-cost techniques of reaching the
Moon. Ballistic lunar transfers are long duration trajectories that leverage solar perturbations …

Satellite constellations can provide communication and navigation services to support future
lunar missions, and are attracting growing interest from both the scientific community and …

Asteroid exploration has been attracting more attention in recent years. Nevertheless, we
have just visited tens of asteroids, whereas we have discovered more than 1 million bodies …

The University of Tokyo has proposed a water resistojet thruster with a high certainty of
liquid–vapor separation and low power consumption. In this propulsion system, liquid water …