The COMET ORB is glad to invite you to a mini-seminar. This event is open and free of charge. This short seminar is a single talk (~45 min) from Clément Courde and Julien Chabe, from Observatoire de la Côte d'Azur. Because of the current health situation, it has been decided not to set a face-to-face seminar, but only a video-conference instead. The talk will be given in French. Abstract : The end of the ...

The COMET ORB is glad to invite you to a mini-seminar. This event is open and free of charge. Connection details will be communicated by mail just before the event. This short seminar is a single talk (~40 min) from Sean Bruinsma, head of the Space Geodesy Office at CNES. He is very experienced in space weather. A Q&A session will be organised at the end of the presentation. Because of the current ...

The year 2018 was exceptional for asteroids exploration with two sample return missions reaching their target: in July 2018, Hayabusa2 (JAXA) reached the asteroid Ryugu. Hayabusa2 released three JAXA technological demonstrators and MASCOT, a lander developed and operated by CNES/DLR. The spacecraft also collected surface material twice and performed a crater-creating experiment… OSIRIS-REX arrived at asteroid Bennu in December 2018 and it should soon start retrieving samples of material. Years ...

USER FEEDBACK IN MACHINE LEARNING / USER-IN-THE-LOOP IN MACHINE LEARNING: Feasible or not ? CNES Experts Communities (COMET) OPS (Operations and Exploitations of Space Missions), SIL (Computer System Architecture and Software Engineering) and ORB (Orbital mechanics) organize a workshop on Machine Learning / deep learning techniques and more specifically around the problem of user feedback in these algorithms. By user feedback it is meant the ability for the user, based on his ...

A growing interest of the space scientific community for trajectories towards, around and from Lagrangian points has been registered in recent years. In particular, the three-body problem is one of the most studied models not only in celestial mechanics, but also in mathematics. For the early first solar system exploration missions (like Voyager), a patched conics model was satisfactory to compute the trajectory. As interplanetary missions became more demanding (as ...