Discovered 1990 Sept. 25 by Spacewatch at Kitt Peak.
Summanus was the Etruscan or Roman deity responsible for nocturnal lightning and thunder, as Jupiter was in daytime. This was the first earth-approacher discovered automatically by software and (lightning-fast) electronic computer; J. V. Scotti used D. L. Rabinowitz's Moving Object Detection Program at the telescope.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)