(15788)_1993_sb | discoverer | donal_oceallaigh <tsp> (15788)_1993_sb | epoch | 2006-03-06 <tsp> (15788)_1993_sb | periapsis | 39971000000000 <sep> (15788) 1993 sb is a trans-neptunian object of the plutino class apart from pluto, it was one of the first such objects discovered (beaten by two days by (385185) 1993 ro and by one day by 1993 rp), and the first to have an orbit calculated well enough to receive a number the discovery was made in 1993 at the la palma observatory with the isaac newton telescope very little is known about the object even the diameter estimate of ~130 km is based on an assumed albedo of 009kbo's found in 1993 include: (15788) 1993 sb, (15789) 1993 sc, (181708) 1993 fw, and (385185) 1993 ro 
on 6 march 2006 donal o'ceallaigh discovered (15788) 1993 sb. which has a periapsis of 3997100000000.0. .no information