We don't know if it has any moons. We currently do not have the technology to detect moons orbiting planets outside of our solar system.
Neptune
It is uncertain at this point. Some evidence suggests that it may have a moon
It has no moons.
Only Mars has two moons. The other planets have either one moon, no moons, or many moons.
Sedna has no moons.
There is no Planet Kepler. The Kepler telescope was built to find planets in other solar systems. Planets it finds are given designations such as Kepler-62e. The telescope has found hundreds of planets with a wide range of characteristics.
Neptune
Ceres and Eris are not planets; they are classified as dwarf planets. Eris was discovered in our solar system recently and not by the Kepler mission. Ceres is not "new" either; it was discovered the first day of the 19th. Century. I didn't check the specific "Kepler-" codes, but that looks like planets discovered by the Kepler mission to be orbiting around other stars.
Some evidence suggests Kepler-22b may have at least one moon, but it is not confirmed.
It is uncertain at this point. Some evidence suggests that it may have a moon
The planet Jupiter has many moons including Kallichore, Kore, Kalyke and Kale. Kiviuq and Kari are moons around the planet Saturn.
Copernicus and later Galileo and Kepler. Venus was found to have phases Jupiter was found to have moons Elliptical orbits which Kepler found would later be described by gravity Start there.
When you observe the motion of a satellite you can infer the mass of the planet via Kepler's laws.
many moons.
No. There are, however, many planets discovered by a spacecraft called Kepler and given designations such as Kepler-69c.
Kepler-22b was given its the designation Kepler as it is one of many planets discovered by the Kepler observatory. The 22b refers to it being the innermost (and only known) planet orbiting the star Kepler-22.
It has no moons.