Sun in H-alpha
Sun in H-alpha
Sigma Orionis
Keid (Omicron-2 Eridani)(40 Eridani)
A is magnitude 4.4, 90% the mass of the Sun.
B is a 10th magnitude white dwarf, 50% the mass of the sun.
C is an 11th magnitude red dwarf, 20% the mass of the sun.
