Capella
yellow giants · a pair circling every 104 days
43 light-years from Earth
Two giant stars, each about 2.5 times the Sun's mass, circling each other every 104 days, 0.74 AU apart. The cooler one, 12 times the Sun's width, is near the end of burning helium in its core; the hotter, 9 times the Sun's width, has left the main sequence and is still swelling toward the red giant stage.
- 42.9 light-years · two giants 0.74 AU apart, 4,970 K and 5,730 K
- sped up here: one lap in 30 s, really 104 days
- kind
- star
- size
- 0.11 AU across