What are S-Stars???
S-stars are stars orbiting the supermassive black hole (Sagittarius A) at the center of our Milky Way Galaxy. They can travel at a speed of 8000 km per second. That is 2.5% of the speed of light.
S-stars can be said to have helped researchers to some extent in finding the mass of the Sagittarius A black hole. The orbit of the S-star is also very different due to the fact that it is under the rulership of Sagittarius A.
S4716 is the fastest S-Star ever seen. It orbits Sagittarius A once in just 4 years. The S-stars orbit Sagittarius A* in an elliptical orbit.
A detailed study of S-stars found that Sagittarius A* has a mass of about 4 million solar masses. And that was before the Event Horizon Telescope (EHT) first imaged Sagittarius A*.