About the star :

Arabic Mirzam, Murzim or Al-Murzim, "The roarer", [The Roarer refers to a lion. The ancients Arabs had a Lion figure encompassing a number of constellations] "the Announcer", combined by the Arabs with beta Canis Minor (Gomeisa) in the plural Al Mirzamani, or as Al Mirzama al Shi'rayain, the two "Sirian Announcers" as they announced the immediate rising of the still brighter Sirius.

Mirzam also was Al Kalb, "the Dog", running in front of Sirius, but this must have been from early times in the Desert, in our maps it marks the right fore foot of the Dog, Canis Major. (Allen).

General influence of the constellation:

It is said to give good qualities, charity and a faithful heart, but violent and dangerous passions. There is some danger from, or fear of, darkness and the night, and liability to dog bites, though the latter characteristic is probably associated more particularly with Sirius (this star). Canis Major is connected by the Kabalists with the Hebrew letter Tzaddi and the 18th Tarot Trump, "The Moon". (Robson).

Remember, only the parallel and conjunction are important and the orb must be no more than 1 (one) degree.

Announcers: Mirzam and Gomeisa were "The Announcers", representing a barking dog who announces the arrival of visitors, or brings things to people's attention; many radio and TV anouncers are influenced by either of these two stars.