Y-MPWL
    Y-MPWL - Star
Y-MPWL I
Y-MPWL II
    Y-MPWL II - Asteroid Belt 1
    Y-MPWL II - Ice Field 1
Y-MPWL III
    Y-MPWL III - Asteroid Belt 1
    Y-MPWL III - Moon 1
Y-MPWL IV
    Y-MPWL IV - Asteroid Belt 1
    Y-MPWL IV - Asteroid Belt 2
Y-MPWL IX
    Y-MPWL IX - Asteroid Belt 1
    Y-MPWL IX - Asteroid Belt 2
Y-MPWL V
    Y-MPWL V - Asteroid Belt 1
    Y-MPWL V - Moon 1
Y-MPWL VI
    Y-MPWL VI - Asteroid Belt 1
    Y-MPWL VI - Moon 1
Y-MPWL VII
    Y-MPWL VII - Asteroid Belt 1
    Y-MPWL VII - Asteroid Belt 2
    Y-MPWL VII - Asteroid Belt 3
    Y-MPWL VII - Asteroid Belt 4
    Y-MPWL VII - Moon 1
    Y-MPWL VII - Moon 10
    Y-MPWL VII - Moon 11
    Y-MPWL VII - Moon 12
    Y-MPWL VII - Moon 13
    Y-MPWL VII - Moon 14
    Y-MPWL VII - Moon 15
    Y-MPWL VII - Moon 16
    Y-MPWL VII - Moon 17
    Y-MPWL VII - Moon 18
    Y-MPWL VII - Moon 19
    Y-MPWL VII - Moon 2
    Y-MPWL VII - Moon 20
    Y-MPWL VII - Moon 3
    Y-MPWL VII - Moon 4
    Y-MPWL VII - Moon 5
    Y-MPWL VII - Moon 6
    Y-MPWL VII - Moon 7
    Y-MPWL VII - Moon 8
    Y-MPWL VII - Moon 9
Y-MPWL VIII