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.
Absolute magnitude is a measure of the inherent brightness of a celestial. object. This scale is defined as the apparent magnitude a star would. have if it were seen from a distance of 32.6 light-years. The lower the. number, the brighter the object. Negative numbers indicate extreme. brightness.