41 Arae A

41 G. Arae or GJ 666 A is a binary star system in the constellation Ara. Although often called just 41 Arae, it is more accurate to call it 41 G. Arae, as the number 41 is the Gould designation.

The primary star (41 Arae A) in this system is a G8V star. It has about 81% of the mass of Sol, and 79% of Sol's radius. The fainter member of the pair has a peculiar spectrum that shows a deficiency in metals, which, for astronomical purposes, are the elements heavier than Helium.

The two stars share a highly elliptical orbit with a period of 1672 years, and the average separation of the two stars is about 210 AU. This system has a relatively high proper motion, moving over a second of arc across the sky each year.

Planet Diana, settled in 2112 OTT, is the only Garden World planet in the system. Because of the D-Spartan's society, the other 3 planets (two rock and one ice) are unsettled.