Answers From Experts & Organizations (1) SUCCESS! A. By definition, a hematoma is a collection of blood outside of a blood vessel. It occurs because the wall of a blood vessel wall, artery, vein or capillary, has been damaged and blood has leaked into tissues where it does not belong.
Deneb's absolute magnitude is currently estimated as â8.4, placing it among the most luminous stars known, with an estimated luminosity nearly 200,000 times that of the Sun. This is towards the upper end of various published values over the last few decades.
Astronomers have figured out that an increase of 5 magnitudes is equal to a 100-fold decrease in brightness. Thus, an increase in one magnitude is equal to the fifth root of 100, which is 2.512. This means something like a fourth magnitude star is 2.512 times brighter than a fifth magnitude one.