Don't forget about Ikaros!
Don't forget that this is the *second* light sail mission --- and it's just a test-bed, at that (it's way too low to do anything other than burn up almost immediately). The *first* was JAXA's Ikaros. Launched five years ago alongside their Venus probe, it passed Venus after six months and is now... somewhere (and I haven't been able to find a reference). It was last contacted in April this year.
Ikaros is interesting because it's got LCD panels on the sail which allow the albedo to be changed; it's steerable. They reckon it's getting about 1 mN of thrust.
Biting the hand that feeds IT
