One metre does it I saw this one from 500km away and it was easily the most impressive thing I've seen in my life: https://en.m.wikipedia.org/wiki/2023_CX1 htt

One metre does it I saw this one from 500km away and it was easily the most impressive thing I've seen in my life: https://en.m.wikipedia.org/wiki/2023_CX1 https://en.m.wikipedia.org/wiki/2023_CX1 It says that was 1m in mean diameter, but also weighed 1Mg, which seems like a lot but when I look it up, a spheric m³ of aluminium is already heavier than that (1.4Mg) and iron would be 3× heavier still