Planet
The smallest known planet is PSR B1257+12A, one of the first extrasolar planets discovered, which was found in 1992 in orbit around a pulsar. Its mass is roughly half that of the planet Mercury. The smallest known planet orbiting a main-sequence star other than the Sun is Kepler-37b, with a mass (and radius) slightly higher than that of the Moon.
UESAC
The Minor Planet Center credits UESAC with the discovery of 1123 numbered minor planets. The discoveries range from the lowest numbered discovery, 6102 Visby, to the currently highest numbered body, . The given total also including and , which were separately credited to "Comets UESAC", while all other discoveries were credited to "UESAC". More minor planets may yet to be numbered and added to this list as their orbits are confirmed.