None in our Solar System. Outside of it, there are a bunch of planets whose name starts with "K2", or with "Kepler", or with "KELT". Check the Wikipedia article "List of exoplanets (full)" for the complete list.
There is no planet in the solar system whose name begins with K.
Exoplanets with names beginning with k are either planets in orbit around a star whose designation is kappa [...], or it is named after the program through which it was found: such as KELT (for the KELT-North Survey) of KEPLER (for the Kepler satellite).
No planet so far known, begin with the letter O.
In our solar system, the planet with the lowest air temperature is Uranus, with a minimum temperature of about 49 K and a mean surface temperature at 1 bar of about 76 K.
You are referring to the dwarf planet Pluto
a key is a landform that starts with a k and a knoll is a landform that starts with K and means a hill.
Krypton is an element that starts with K.
Ketchup is edible and starts with K.
Koala cola, that starts with a k.!
No U.S. state capital starts with K.
Is there a player who starts with k
A slang word that starts with k is knackered
The planet is Neptune.
You shut the kitchen door. It starts with the letter k.
a game that starts with the letter K
a word that starts with k and ends in n is known