kometa okresowa

A periodic comet is a comet which orbits around the Sun.

His former mathematics professor published this note and Encke became famous as the discoverer of the short periodic comets.

He observed the bright comet of the 1860 and two years later discovered a periodic comet.

Could it be that it was a "periodic comet"?

Two of them were named after Brorsen as they are periodic comets.

P/2010 B2 is a periodic comet in our solar system.

It is the periodic comet with the longest known orbital period (366.51 years).

A number of periodic comets discovered in earlier decades or previous centuries are now lost comets.

D/ indicates a periodic comet that has disappeared, broken up, or been lost.

Eventually, perturbations from the giant planets send such objects towards the Sun, transforming them into periodic comets.