55 Cancri e

[stevebowers]

If that article is correct, this could be the first Chthonian Class planet discovered. I'm a little dubious, since the density is a bit low. The density is given as 5.9g/cm3, just a bit denser than Earth; a solid planet with 8 times Earth's mass should be considerably denser than that; about 7g/cm3. But the error bars are quite large.
Here it is in OA, now renamed Janssen by the IAU

If it is cool on the dark side, I should tone down the night-side luminosity a bit.