They're named after the absolutely enormous asteroid 887 Alinda, first discovered in 1918. At roughly 2.5 miles across, 887 Alinda would cause an extinction-level catastrophe if it struck Earth.

A massive asteroid, spanning more than two miles across, has just made its closest approach to Earth in decades - but its spectacle isn’t over yet. The asteroid, named (887) Alinda, will reach ...

the larger asteroid, 887 Alinda, is over four kilometres in diameter and could cause a global extinction event. A radar image of asteroid Alinda taken in January 2024. The rectangular region is ...

the larger asteroid, 887 Alinda, is over four kilometres in diameter and could cause a global extinction event. NASA’S asteroid tracker shows a depiction of asteroid 2024 YR4. The asteroid’s ...

They're named after the absolutely enormous asteroid 887 Alinda, first discovered in 1918. At roughly 2.5 miles across, 887 Alinda would cause an extinction-level catastrophe if it struck Earth. In ...