(11433) Gemmafrisius

Template: Infobox Asteroid / Maintenance / Error 2

( 11433 ) Gemmafrisius is an asteroid of the inner main belt, which was discovered on 16 October 1977 by the Dutch astronomer Cornelis Johannes van Houten couple and Ingrid van Houten - Groeneveld. The discovery happened at the 3rd trojan screening, in which the 120 - cm Oschin Schmidt telescope of the Palomar Observatory recorded by Tom Gehrels field plates at Leiden University were screened, 17 years after the beginning of the Palomar - Leiden Surveys. Unconfirmed sightings of the asteroid it had previously given already in March 1953 under the provisional designation 1953 FB1 at the Heidelberg State Observatory king chair.

The asteroid belongs to Nysa group, one named after (44 ) Nysa group of asteroids (also called Hertha family, according to (135 ) Hertha). He is in a 1:2 orbital resonance with the planet Mars.

( 11433 ) Gemmafrisius was named on 9 April 2009 by the physician, astronomer, mathematician, cartographer and instrument maker Jemme Reinersz ( 1508-1555 ), known under the name Gemma Frisius. After Gemma Frisius a lunar crater in the southern hemisphere moon was in 1935 been named: Moon crater Gemma Frisius.