The Dog Star, Sirius isn’t just one star but has a companion star know as Sirius B which revolves around Sirius A varying in distance between about 8 astronomical units and 31 astronomical units. An astronomical unit ,AU, is the mean distance between the Sun and Earth. Sirius Alpha is the brighter of the two with Sirius Beta only visible through a telescope. Sirius B is a white dwarf star. The binary star system is one of our closest stars being only 8.6 light years away.
The Dog star has a very long observational history beginning before the Egyptians and continuing till today. There are multiple references to Sirius, commonly known as the Dog Star, in almost all cultures and strangely enough they all refer to Sirius as some form of canine. Cultures from South America, North America and even China. Very amazing. You have almost certainly heard of the “Dog days of summer” which is a reference to the rising of the Dog Star just before sunrise at the beginning of summer. Now you know where the term comes from, the Egyptians.
Sirius itself isn’t mentioned in the Bible as far as I know but in modern Hebrew it is known as the”Shining” which I suppose is something. Anyway, If you want to know more about this star system I suggest you just Google the name Sirius and you will find a huge amount of interesting information about this the Dog Star.