"==Planetary nebula nucleus (PNN) ==In 1995 the central planetary nebula nucleus (PNN) was observed as a DA white dwarf, having seemingly faded by a factor of three between 1987 and 1995.
In 1995 its central star (CS) was observed to be rapidly transforming into a DA white dwarf, having faded by a factor of 3 between 1987 and 1995.