Function: noun
Date: 1902
: a measure of the intrinsic luminosity of a celestial body (as a star) expressed as the apparent magnitude the body would have if viewed from a distance of 10 parsecs
Function: noun
Date: 1902
: a measure of the intrinsic luminosity of a celestial body (as a star) expressed as the apparent magnitude the body would have if viewed from a distance of 10 parsecs
Merriam Webster Collegiate English Dictionary. Merriam Webster - Энциклопедический словарь английского языка. 2012