Based upon parallax measurements, it [Lambda Sagittarii] is 78.2 light-years (24.0 parsecs) from the Sun.
It [Lambda Sagittarii] has a mass 1.8 times that of the Sun and a physical size of about 11.2 times the Sun’s radius.
Halogen lamps are a type of incandescent lamp using a tungsten filament in bulbs that have small amounts of a halogen, such as iodine or bromine added.
Lambda Sagittarii (Wikipedia) Lambda Sagittarii (Latinized from λ Sagittarii), formally named Kaus Borealis /ˈkɔːs bɒriˈælɪs/, is a star in the southern constellation of Sagittarius. The star marks the top of the Archer’s bow.