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.
The apparent magnitude is how bright the star appears to us, but  stars are all at different distances so that a star that is really  bright might look dim because it is ver â¦ y far away. So the absolute  magnitude measures how bright the star would look if it was placed  at a standard distance of 10 parsecs.   When the absolute magnitude is greater than the apparent magnitude,  it just means that it is closer than 10 pc.  Absolute magnitude is the brightness of an object as seen from a predete â¦ rmined distance, depending on the object.    For planets, the distance used is 1 AU (Astronomical Units). Stars and galaxies use 10 parsecs which is about 32.616 light years.