This video shows what will happen to the planet orbits of the Solar system if the Sun loses a third of its mass in 50 days 10 years later, that is, by astronomical standards, almost instantly.
See with subtitles.
The video was made using own software.
The calculations took into account the mutual influence of the Sun, all the planets of the Solar System and the Moon on each other.
The tracks ‘Passing Time’ by Kevin MacLeod and ‘Venkatesananda’ by Jesse Gallagher sound in this video.