1 To work in the Security and Maintenance window, you should be logged into an administrator account. 2  From the desktop window, right-click the Start button (the button with the Windows icon) from the bottom-left corner of the screen. 3  From the context menu that appears, click Control Panel.
Alpha Centauriâs surface temperature is a few degrees Kelvin less than our sun (that is, about 5770 k), but its greater diameter (about 25% more than the sun) and the overall larger surface area gives it a luminosity nearly 1.6 times that of our star.
Alpha Centauri B is the companion star, or secondary, of the binary system, and is slightly smaller and less luminous than the Sun. It is a main-sequence star of spectral type K1 V, making it more an orange color than the primary star.Alpha Centauri B is about 90% the mass of the Sun and 14% smaller in radius.lpha Centauri (Î± Cen), also known as Rigil Kent (/ËraÉªdÊÉl ËkÉnt/) or Toliman, is the closest star system to the Solar System at 4.37 ly (1.34 pc).