Nope. You picked Mercury, the eighth largest planet in
diameter in the solar system. Mercury's temperature ranges
from 90 K to 700 K. The planet itself is the second densest
major body in the solar system. (The Earth is the most
dense.) Mercury's iron core covered by a thin silicate
mantle and crust. Only one spacecraft, Mariner 10, has ever
visited (in 1973 and 1974).