The following is a list of the first planet in each of their respective star systems.

0-9

• 40 Eridani A I

A

• Algol I
• Alpha I
• Alpha Majoris I
• Angel I

B

• Bajor I
• Beta Berman I
• Beta Penthe I
• Beth Delta I
• Bezride (Pallas 14 I)

C

• Cardassia I
• Castal I

D

• Dannus I
• Doraf I
• Dramia

F

• Finibus I

G

• Galdonterre I

H

• Hindmar

I

• Itamish I

K

• Kabrel I
• Kasar (Lutani I)
• Korris I

L

• L-374 I

M

• Maxia Zeta I
• Meldrar I
• Mercury (Sol I)
• Meridian
• Moab I

N

• Nelvana I

O

• Omega Centus I
• Orion I

P

• Paxan homeworld
• Persephone I
• Pshurru

S

• Sarpeidon (Beta Niobe I)
• Setlik I
• Sigma Draconis I

T

• T'Lani Prime (T'Lani I)
• Talos I
• Taygeta I
• Terra 10 (Cepheus I)
• Totoro (Braslota I)

V

• Valo I
• Vaytan I
• Veridian I

Y

• Yridia I

External link

• First planets at Memory Beta, the wiki for licensed Star Trek works