D01-A is the heaviest, hottest and most powerful thing in the JD01-A system. He is very energetic and fuses about 100,000 tons of hydrogens EVERY SECOND to make deuteriums, then fuses them to make heliums. Sence he is very energetic, he will only live for 800,000 millenniums. he has been told about his death by J02-A and A02-A but he doesn't listen to them and thinks he will live forever because of his enormous power.  Because hes very energetic and powerful, he emits quintillions of muons everywhere and a lot of these muons hit P02-A causing many problems here and even causes mass extinctions on P02-A if D01-A is too excited.  But despite the bad things about him, he emits even more photons, making heat on P02-A and other planets, moons and other objects. Without him, P02-A will freeze to death.