BK4-YC
    BK4-YC - Star
BK4-YC I
BK4-YC II
    BK4-YC II - Asteroid Belt 1
BK4-YC III
    BK4-YC III - Asteroid Belt 1
BK4-YC IV
    BK4-YC IV - Asteroid Belt 1
    BK4-YC IV - Moon 1
BK4-YC V
    BK4-YC V - Asteroid Belt 1
    BK4-YC V - Asteroid Belt 10
    BK4-YC V - Asteroid Belt 11
    BK4-YC V - Asteroid Belt 12
    BK4-YC V - Asteroid Belt 13
    BK4-YC V - Asteroid Belt 2
    BK4-YC V - Asteroid Belt 3
    BK4-YC V - Asteroid Belt 4
    BK4-YC V - Asteroid Belt 5
    BK4-YC V - Asteroid Belt 6
    BK4-YC V - Asteroid Belt 7
    BK4-YC V - Asteroid Belt 8
    BK4-YC V - Asteroid Belt 9
    BK4-YC V - Moon 1
    BK4-YC V - Moon 10
    BK4-YC V - Moon 11
    BK4-YC V - Moon 12
    BK4-YC V - Moon 13
    BK4-YC V - Moon 14
    BK4-YC V - Moon 15
    BK4-YC V - Moon 16
    BK4-YC V - Moon 2
    BK4-YC V - Moon 3
    BK4-YC V - Moon 4
    BK4-YC V - Moon 5
    BK4-YC V - Moon 6
    BK4-YC V - Moon 7
    BK4-YC V - Moon 8
    BK4-YC V - Moon 9
BK4-YC VI
    BK4-YC VI - Moon 1
    BK4-YC VI - Moon 2
    BK4-YC VI - Moon 3
    BK4-YC VI - Moon 4
BK4-YC VII
    BK4-YC VII - Asteroid Belt 1
    BK4-YC VII - Asteroid Belt 2
    BK4-YC VII - Moon 1
    BK4-YC VII - Moon 2
    BK4-YC VII - Moon 3
    BK4-YC VII - Moon 4
    BK4-YC VII - Moon 5
    BK4-YC VII - Moon 6
    BK4-YC VII - Moon 7
    BK4-YC VII - Moon 8
    BK4-YC VII - Moon 9
BK4-YC VIII
    BK4-YC VIII - Asteroid Belt 1
    BK4-YC VIII - Asteroid Belt 2
    BK4-YC VIII - Moon 1
    BK4-YC VIII - Moon 2
    BK4-YC VIII - Moon 3
    BK4-YC VIII - Moon 4
    BK4-YC VIII - Moon 5
    BK4-YC VIII - Moon 6