4:00 PM ET on Apr 13, 2017. The stock information provided is for informational purposes only and is not intended for trading purposes. The stock information is provided by eSignal, stock charts are provided by EDGAR Online, both third party services, and CenterPoint Energy, Inc. does not maintain or provide information directly to this service. Stock information is delayed approximately 20 minutes.
Asteroids can reach as large as Ceres, which is 940 km (about 583 miles) across. On the other hand, one of the smallest, discovered in 1991 and named 1991 BA, is only about 20 feet (6 meters) across. Nearly all asteroids are irregularly shaped, although a few are nearly spherical, such as Ceres.
Ceres (designated as 1 Ceres) has an average diameter of about 950 km (590 miles). It is by far the largest object in the asteroid belt. It is, however, the smallest dwarf plaâ¦net. By comparison, Pluto has a diameter of about 2300 km (1430 miles). The asteroid is slightly oblate, but apparently not because of rotation. Its polar diameter is only about 909 km (565 mi) while its equatorial diameter is about 975 km (606 mi).