Robert S. McMillan is an astronomer at the University of Arizona, and heads the Spacewatch project, which studies minor planets. He has made various discoveries, including notably 20000 Varuna. [1]
On October 19, 2008, he discovered a short-periodic comet 208P/McMillan. [2]
In 1977 McMillan received his Ph.D. from the University of Texas at Austin.