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Kepler-70 (KOI-55) star system

Kepler-70 is a star in the constellation Cygnus with an apparent visual magnitude of 14.87 and is 4200 light-years away.
A subdwarf B star, Kepler-70 passed through the red giant stage some 18.4 million years ago. In its present-day state, it is fusing helium in its core. Once it runs out of helium it will contract to form a white dwarf. It has a relatively small radius of about 0.2 times the Sun's radius; white dwarfs are generally much smaller. The star may be host to a planetary system with two planets, although later research indicates that this is not in fact the case. If they are confirmed to exist, then the innermost planet has the highest temperature of any known planet.
There 2 planets are Kepler-70 b and c, the two planets were most likely gas giants that spiraled inward toward their host star, which subsequently became a red giant, vaporizing much of the planets except for parts of their solid cores, which are now orbiting the Subdwarf B star. Another theory is that only one gas giant spiralled inward into the star, and that its core fragmented inside the red giant after engulfment, with the current planets being the large core fragments.