| 释义 |
MK system MK system See spectral types.MK system[¦em‚kā ‚sis·təm] (astronomy) A system of classifying stars in which suffixes are added to the designations of the Harvard-Draper sequence to indicate luminosity, ranging from I for supergiants to VI for subdwarfs and white dwarfs. Also known as MKK system; spectral/luminosity classification; Yerkes system. |