TL;DR: There are estimated 1,000+ carbonaceous near-Earth asteroids with hydrated minerals. Some require less delta-v to reach than the lunar surface, making them potentially more accessible water sources. T
There are estimated 1,000+ carbonaceous near-Earth asteroids with hydrated minerals. Some require less delta-v to reach than the lunar surface, making them potentially more accessible water sources. The upcoming Rubin Observatory (LSST) will discover many more.
Designation
Multiple targets
Type
B/C-type (carbonaceous NEAs)
Composition
Hydrated minerals; organics; water; similar to Bennu and Ryugu
Orbit
Near-Earth (various)
Mining Potential
High - multiple accessible targets with water resources; lower delta-v than lunar surface for some
Mission
Various survey telescopes (NEOWISE, LSST)