I feel like astronomy probably wins, the magnitudes are literally astronomical.

The Perseus Cluster of galaxies is estimated[0] at something like 816,592 light years in diameter, so that's 10^21 meters, and on the other end 2008 TC3[1] is an asteroid 4.1m across.

[0] https://www.universeguide.com/galaxy/perseuscluster

[1] https://thesolarsystem.fandom.com/wiki/2008_TC3