1991 JT is a background asteroid from the middle regions of the asteroid belt which was discovered on 7 May 1991 by Reg Sprigg in the Siding Spring Observatory.
It was named after Australian geologist Reg Sprigg. 
Reg Sprigg
(Australian geologist) 
This minor planet was named after Reg Sprigg (19191994), Australian exploration geologist, oceanographer, biologist, author and conservationist. 
