Hubble class change
E0-E1
E1-E2
E2-E3
E3-E4
E4-E5
E5-E6
E6-E7
10 ( 1 − 1 A i )
0.5
1.5
2.5
3.5
4.5
5.5
6.5
Transition A i
A 1 = 1.05
A 2 = 1.18
A 3 = 1.33
A 4 = 1.54
A 5 = 1.82
A 6 = 2.22
A 7 = 2.86