X-13 47 Ursae Majoris b.
X- 15 55 Cancri.
X-16 Gliese 229 b.
X-17 Lalande 21185 b.
X-18 Beta Pictoris disk.
X-13, 14 16 Cygni B b. Two illustrations depicting a moon of the planet at aphelion and perihelion.
X-70 Hot Neptune-like world
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