what is the size of the first mentioned planet?
Jupiter's radius is about 1/10 the radius of the Sun
Jupiter
Jupiter's radius is about 1/10 the radius of the Sun, and its mass is 0.001 times the mass of the Sun, so the densities of the two bodies are similar. 
where are most asteroids located in our solar system Asteroid belt which is located roughly between the orbits of the planets Jupiter and Mars what is this belt? It is a torus-shaped region in the Solar System what is this system mentioned above? The Solar System is the gravitationally bound system of the Sun and the objects that orbit it, either directly or indirectly how are the above mentioned belts formed? A hypothesis to the asteroid belt creation is that in general, in the Solar System, a planetary formation is thought to have occurred via a process comparable to the long-standing nebular hypothesis: a cloud of interstellar dust and gas collapsed under the influence of gravity to form a rotating disc of material that then further condensed to form the Sun and planets. what are the physical features of the latter above mentioned planet? Mars is approximately half the diameter of Earth, having about 15% of Earth's volume and 11% of Earth's mass, resulting in about 38% of Earth's surface gravity, the  red-orange appearance of the Martian surface is caused by iron oxide, or rust can you explain the air that surrounds the planet? Methane has been detected in the Martian atmosphere what is the weather like here? The seasons of Mars are the most Earth-like, with equatorial summer,  winter what are the features of the above mentioned belt? Hundreds of thousands of asteroids are currently known, and the total number ranges in the millions or more, depending on the lower size cutoff, over 200 asteroids are known to be larger than 100 km,  700,000 and 1.7 million asteroids with a diameter of 1 km or more how are these belts classified? Classified according similar orbital elements and similar spectral features
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Jupiter [SEP] Mass and size
Jupiter's mass is 2.5 times that of all the other planets in the Solar System combined—this is so massive that its barycenter with the Sun lies above the Sun's surface at 1.068 solar radii from the Sun's center. Jupiter is much larger than Earth and considerably less dense: its volume is that of about 1,321 Earths, but it is only 318 times as massive. Jupiter's radius is about 1/10 the radius of the Sun, and its mass is 0.001 times the mass of the Sun, so the densities of the two bodies are similar. A "Jupiter mass" ( or ) is often used as a unit to describe masses of other objects, particularly extrasolar planets and brown dwarfs.