For some background information, I recommend my article in the Star Formation Newsletter.
The orbits of T Tau Sa (light blue) and T Tau Sb (dark blue)
around their center of mass, and the inner part of the
circumbinary disk.
The dotted line is the line of nodes, the dash-dotted line
points to the periastron of T Tau Sb.
The red cross marks the position of T Tau Sb on 1. January
2020.
The observers on Earth look along the axis marked "line of
sight" in the positive direction.
The entire T Tau triple system, showing a much larger region than the other movie. The orbit of T Tau S around T Tau N is drawn in green, with T Tau N in the center. T Tau Sa/Sb are located at their position on 1. January 2020. Also shown are the circumstellar disk around T Tau N, and the circumbinary disk around T Tau S.
For more information, look at poster at Cool Stars 20.5 or read our research note.
If T Tauri does not excite you, you may also look at my homepage.