apparent magnitude
Astronomy term for the brightness of a celestial object as seen from Earth. Contrasts with 絶対等級 (absolute magnitude).
See also: 絶対等級
The apparent magnitude of Sirius is about -1.5.
The smaller the apparent magnitude, the brighter the star appears.
apparent magnitude
Compound of 視 (visual, apparent) and 等級 (grade, magnitude). A modern scientific term.