What is a K type star?

Answer 1

The stellar classification of Class K stars are orange and are slightly cooler than our Sun.

Notable K type stars are Arcturus which is a supergiant and Alpha Centauri B which is an orange dwarf.

K type stars will have a slightly longer period on the main sequence than our own Sun, which is a G type star, and thus K type stars are a good candidate for possible planets and life.

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Answer 2

A K-type star is a classification of stars based on their temperature, color, and spectral characteristics. These stars are cooler than the Sun, with surface temperatures typically ranging from about 3,900 to 5,200 degrees Celsius. They appear orange to orange-red in color and are less luminous than hotter stars.