General Properties
• Average star
• Absolute
visual magnitude = 4.83 (magnitude if it were at a distance of 32.6 light years = 10 parsecs
– will explain soon)
• Central temperature
= 15 million K
• 333,000 times
Earth’s mass
• 109 times Earth’s
diameter
• Consists entirely of gas (av.
density = 1.4 g/cm3)
• Only appears so bright because it is
so close.
• Spectral type G2
• Surface temperature
= 5800 K
