The Sirius group was mentioned in Gene Roddenberry's original Star Trek pitch in one of the suggested story lines. In the storyline "Kentucky, Kentucky," the Sirius group was home to an Earthcolony for fifty years. This colony was attacked by Viking-like savages and reduced to a "frontier" log-fort life. They were regrouped and led by CaptainRobert April when the SS Yorktown visited the colony.
The chart naming stars within twenty light years of Sol was originally drawn by Rick Sternbach for the Star Trek Spaceflight Chronology in the late 1970s. Found on page 77, this chart showed Earth commercial and exploration routes after the use of warp drive began. Sirius was a destination on an exploration route.
According to Star Trek: Star Charts (pg. 45), Sirius, also known as Alpha Canaris Majoris, was located in or near Federation space, in the Beta Quadrant. It was a binary star system. Sirius A was an A-class star with a magnitude was +1, which was a hundred times brighter than Sol. Sirius B was also an A-class star.