Original:  Profit (US $billion) Composition Ryugu 83 30 4.663 Nickel, iron, cobalt, water, nitrogen, hydrogen, ammonia 1989 ML 14 4 4.889 Nickel, iron, cobalt Nereus 5 1 4.987 Nickel, iron, cobalt Bennu 0.7 0.2 5.096 Iron, hydrogen, ammonia, nitrogen Didymos 62 16 5.162 Nickel, iron, cobalt 2011 UW158 7 2 5.189 Platinum, nickel, iron, cobalt Anteros 5,570 1,250 5.440 Magnesium silicate, aluminum, iron silicate 2001 CC21 147 30 5.636 Magnesium silicate, aluminum, iron silicate 1992 TC 84 17 5.648 Nickel, iron, cobalt 2001 SG10 3 0.5 5.880 Nickel, iron, cobalt Psyche 27.67 1.78 - Nickel, iron, cobalt, gold Economics Currently, the quality of the ore and the consequent cost and mass of equipment required to extract it are unknown and can only be speculated. Some economic analyses indicate that the cost of returning asteroidal materials to Earth far outweighs their market value, and that asteroid mining will not attract private investment at current commodity prices and space transportation costs.R. Gertsch and L. Gertsch, "Economic analysis tools for mineral projects in space", Space Resources Roundtable, 1997. Other studies suggest large profit by using solar power. Potential markets for materials can be identified and profit generated if extraction cost is brought down. For example, the delivery of multiple tonnes of water to low Earth orbit for rocket fuel preparation for space tourism could generate a significant profit if space tourism itself proves profitable. In 1997 it was speculated that a relatively small metallic asteroid with a diameter of contains more than US$ 20 trillion worth of industrial and precious metals.
Revised:  Profit (US $billion) Composition Ryugu 83 30 4.663 Nickel, iron, cobalt, water, nitrogen, hydrogen, ammonia 1989 ML 14 4 4.889 Nickel, iron, cobalt Nereus 5 1 4.987 Nickel, iron, cobalt Bennu 0.7 0.2 5.096 Iron, hydrogen, ammonia, nitrogen Didymos 62 16 5.162 Nickel, iron, cobalt 2011 UW158 7 2 5.189 Platinum, nickel, iron, cobalt Anteros 5,570 1,250 5.440 Magnesium silicate, aluminum, iron silicate 2001 CC21 147 30 5.636 Magnesium silicate, aluminum, iron silicate 1992 TC 84 17 5.648 Nickel, iron, cobalt 2001 SG10 3 0.5 5.880 Nickel, iron, cobalt Psyche 27.67 1.78 - Nickel, iron, cobalt, gold On a grander scale, Ceres is considerd a possiblity. As the largest body in the asteroid belt, Ceres could become the main base and transport hub for future asteroid mining infrastructure, allowing mineral resources to be transported to Mars, the Moon, and Earth. Because of its small escape velocity combined with large amounts of water ice, it also could serve as a source of water, fuel, and oxygen for ships going through and beyond the asteroid belt. Transportation from Mars or the Moon to Ceres would be even more energy-efficient than transportation from Earth to the Moon. Economics Currently, the quality of the ore and the consequent cost and mass of equipment required to extract it are unknown and can only be speculated. Some economic analyses indicate that the cost of returning asteroidal materials to Earth far outweighs their market value, and that asteroid mining will not attract private investment at current commodity prices and space transportation costs.R. Gertsch and L. Gertsch, "Economic analysis tools for mineral projects in space", Space Resources Roundtable, 1997. Other studies suggest large profit by using solar power. Potential markets for materials can be identified and profit generated if extraction cost is brought down. For example, the delivery of multiple tonnes of water to low Earth orbit for rocket fuel preparation for space tourism could generate a significant profit if space tourism itself proves profitable. In 1997 it was speculated that a relatively small metallic asteroid with a diameter of contains more than US$ 20 trillion worth of industrial and precious metals.
Edit intent: meaning-changed