👉 Ascidian is a scientific term used in the field of astrophysics. It refers to an object that orbits around another star, and its orbit can be described using Kepler's third law. This law states that the square of the orbital period (T) divided by the square of the semi-major axis (a) equals the square of the eccentricity (e). The term "ascidian" is often used to denote an object in this context.