Sun is the only star in the solar system. It is not part of a binary system. It is a yellow star. It was born in solar nebula about 4.5 billion years ago and is currently in main-sequence. It has apparent magnitude of -26.74 and absolute magnitude 4.83.
The right answer is the option a, part of a binary system<span>. A binary system is two astronomical bodies which orbit one around each other due to the gravitational atraction that they mutually exert on each other. . On the other hand, Sun is a yellow star, a main sequence star and of average absolute magnitude. </span>
