In astrology, a besieged planet is a planet that is placed between two malefic planets, namely Mars and Saturn. Astrology (from Greek grc ἄστρον astron, "constellation star" and grc -λογία -logia) is a group of Systems In Astrology, a malefic planet, or simply malefic, is traditionally thought to bring bad luck and misfortune Besieged planets are believed to be very restricted in their functioning, so even if a planet is a benefic, the very fact that it is besieged means the beneficial attributes it would normally emanate will be lessened whilst in that configuration.