The X-universe consists of between ? and ?(45?) systems with each sector being constructed of up to 3? sectors (56 total?) randomly? linked by System Gates (need confirmation of name), Orbital Accelerators and Jump Gates. Although the layout of the universe in X4:Foundations is highly randomised on game start, there are some predictable elements in individual systems. Below is a list of all possible systems used to construct the X-universe.
A
Antigone Memorial
Argon Prime
Atiya's Misfortune I
Atiya's Misfortune III
B
Black Hole Sun IV
Black Hole Sun V
Bright Promise
C
Cardinal's Redress
Company Regard
D
E
Eighteen Billion
F
Faulty Logic I
Faulty Logic VII
G
Grand Exchange I
Grand Exchange II
Grand Exchange III
H
Hatikvah's Choice I
Hatikvah's Choice III
Heretics End
Hewa's Twin I
Hewa's Twin II
Hewa's Twin III
Hewa's Twin IV
Hewa's Twin V The Cove
Holy Vision
I
Ianamus Zura IV
Ianamus Zura VII
J
K
L
Lasting Vengence
M
Matrix #9
Matrix #451
Memory Of Profit IX
Memory Of Profit X
Morning Star III
Morning Star IV
N
Nopileos' Fortune I
Nopileos' Fortune II
O
P
Path To Profit
Pious Mists II
Pious Mists IV
Pious Mists XI
Pontifex's Clain
Profit Center Alpha
Q
R
S
Sacred Relic
Scale Plate Green I
Scale Plate Green VII
Second Contact II Flashpoint
Second Contact VII
Second Contact XI
Silent Witness I
Silent Witness XI
Silent Witness XII
T
The Reach
The Void
Trinity Sanctum III
Trinity Sanctum VII
True Sight
U
Unholy Retribution