(33128) 1998 BU48, also written 1998 BU48, is a trans-Neptunian object and centaur from the outer solar system.
It has a aphelion of 46.081 AU and perihelion of 20.405 AU.
It was discovered in 22 January 1998 by Nichole M. Danzl at Kitt Peak.
[1] It measures 213 km in diameter.
[2]