HD 212710
HD 212710, also known as BD+85 383, SAO 3721, HR 8546, HIP 109693 is a star in Cepheus with an apparent magnitude of 5.258 and a spectral type of B9.5 Vn, indicating that it is a B-type main sequence star, giving it a blue hue. It's about 254 light-years far away from the solar system. It has about 2.61 times the mass of sun, 2.387 times the radius of sun and 53.79 times as luminous as sun. Nomenclature 

This star doesn't have a Bayer or Flamsteed designation. It has a Chinese name, "Great Tianhuang Emperor" (Chinese: 天皇大帝, tiānhuángdàdì) which means "The Emperor of Heaven". It is an independent constellation in the system of Chinese constellations, belonging to the Purple Forbidden enclosure. References 

8546
212710
Cepheus (constellation)