taevakeha, mis tekib molekulaarpilve kollapseerumisel (nagu tähed ja pruunid kääbused), kuid mille mass on iseloomulik planeetidele (väiksem kui 13 Jupiteri massi), an astronomical object that formed in the same manner as stars and brown dwarfs (i.e. through the collapse of a gas cloud) but that has a planetary mass, therefore by definition below the limiting mass for thermonuclear fusion of deuterium (about 13 mass of Jupiter)