Which stellar classification is for a star hotter than an F5 star?
A) F9
B) K2
C) M0
D) B2

Question

Quizplus · Accepted Answer

The stellar classification system goes in the order O, B, A, F, G, K, M. Each group is then subdivided by numbers from 0-9, with 0 being the hottest and 9 being the coolest within the group. Therefore, a star hotter than an F5 would be classified as either F6, F7, F8 or F9, but since B2 is the only option given that is hotter than F5, it is the correct answer.

Which Stellar Classification Is for a Star Hotter Than an F5