What is the connection between the twelve badges of Digital Baby and the twelve constellations?

There are twelve badges? Although there are twelve children, it seems that there are only ten badges:

Courage = Yagami Taichi

Friendship = Ishida Yamato

Love = in the martial arts.

Knowledge = Izumi Koushiro

Naive = Tachikawa Mimi

Honesty = Kido Joe

Hope = Gao Shiwu

Bright = Ba Shen Jiaer

Miracle = Motomiya Daisuke

Gentle (kind? ) = A temple sage.

In addition, these ten badges seem to be related to the ten warrior attributes in the fourth part.