The Psyche planetoid, measuring 240km (149 miles) in diameter, is located in the asteroid belt between Mars and Jupiter and is made almost entirely of iron and nickel.
At current market prices, such an asteroid, a truly unique object in our solar system, is estimated to be worth $10,000 quadrillion ($10,000,000,000,000,000,000). That is, if you could successfully tow it into orbit and then mine it (and find someone to buy all of it, of course). For scale, the entire global economy is worth over $74 trillion.
"We challenged the mission design team to explore if an earlier launch date could provide a more efficient trajectory to the asteroid Psyche, and they came through in a big way," said Jim Green, director of the Planetary Science Division at NASA Headquarters in Washington, as cited in a NASA press release.
"This will enable us to fulfill our science objectives sooner and at a reduced cost," he added.
The original launch date for the mission was in 2023 with a scheduled arrival sometime in 2030. With the new trajectory, however, it will launch in the summer of 2022 and arrive at the asteroid belt in 2026.