Star Systems
There are apparently 21 known star systems in the immediate sector that are inhabited by alien species. The two main races are the reptillians and the humanoids. The reptillians, however, have a slave race known as greys. There is also an abandoned star system, Lyra, and our own contested Sol system.
Arcturus
Constellation: Boötis
Distance from Earth: 36 LY
Inhabitants: Multiple, including ascended and Andromedans.
Planets: Unknown.
The home of the Arcturans, who are the third most advanced race behind the Andromedans and the Paa Tal. Also, home of at least one of 17 known stargates - this one grants access to the Andromedan galaxy. These stargates were created by the Paa Tal, or founders.