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On average the distance between the asteroids is about 965,600 km (600,000 miles), [68] [69] although this varies among asteroid families and smaller undetected asteroids might be even closer. The total mass of the asteroid belt is estimated to be 2.39 × 10 21 kg, which is 3% of the mass of the Moon. [ 2 ]
The asteroid and comet belts orbit the Sun from the inner rocky planets into outer parts of the Solar System, interstellar space. [ 16 ] [ 17 ] [ 18 ] An astronomical unit , or AU, is the distance from Earth to the Sun, which is approximately 150 billion meters (93 million miles). [ 19 ]
Most highly inclined known main-belt asteroid from 1998/10/19-2007/11/01 MPC (467372) 2004 LG: 70.725° June 9, 2004 A Mercury-through Mars-crosser and near-Earth object. MPC: 2007 VR 6: 68.659° November 1, 2007 Most highly inclined known main-belt asteroid from November 1, 2007, to September 26, 2008 MPC: 2008 SB 85: 74.247° September 26, 2008
The asteroid belt is the smallest and innermost known circumstellar disc in the Solar System. About 60% of the main belt mass is contained in the four largest asteroids: Ceres, Vesta, Pallas, and Hygiea. The total mass of the asteroid belt is estimated to be 3% that of the Moon
"While more than 70,000 meteorites are known, only 6% had been clearly identified by their composition as coming from the moon, Mars, or Vesta, one of the largest asteroids in the main asteroid belt.
This list includes few examples since there are about 589 asteroids in the asteroid belt with a measured radius between 20 and 49 km. [177] Many thousands of objects of this size range have yet to be discovered in the trans-Neptunian region.
Called a "mini-moon" of sorts by some, it temporarily entered Earth's orbit on Sept. 29 from the Arjuna asteroid belt, which follows a similar orbital path around the sun as the Earth.
The Kuiper belt and Neptune may be treated as a marker of the extent of the Solar System, alternatives being the heliopause and the distance at which the Sun's gravitational influence is matched by that of other stars (estimated to be between 50 000 AU and 125 000 AU). [22]